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Airworthiness Directives Procedures Manual

VERSION 2.0: AUGUST 2004

CASADOC 33

Airworthiness Directives Procedures Manual

© Copyright Australian Government 2007

This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from the Commonwealth. Requests and inquiries concerning reproduction and rights should be addressed to the Document Control Officer, Knowledge Services, Civil Aviation Safety Authority, GPO Box 2005, Canberra ACT 2601 or posted to [email protected].

Since the hard copy version is uncontrolled and will not be updated by CASA, it should not be relied upon for any regulatory purpose. The current, approved version of the manual can be viewed at any time via CASA's website at “www.casa.gov.au”.

Copies of this manual are available from: http://casa.jsmcmillan.com.au/He/cat.

You should always refer to the applicable provisions of the Civil Aviation Act, Civil Aviation Regulations and Civil Aviation Orders, rather than this manual, to ascertain the requirements of, and the obligations imposed by or under, the civil aviation legislation.

Version 2.0: August 2004

mailto:[email protected]

http://www.casa.gov.au/

http://casa.jsmcmillan.com.au/He/cat

Airworthiness Directives Procedures Manual Table of Contents

Approved by Executive Manager, Aviation Safety Standards Version 2.0: August 2004

i

Table of Contents

1. Foreword........................................................................................................................... 1-1

2. The Issue of Airworthiness Directives ........................................................................... 2-1

2.1 Legislative Basis of ADs ...........................................................................................2-1 2.1.1 Civil Aviation Safety Regulations .................................................................2-1 2.1.2 Issuing Authority ..........................................................................................2-2 2.1.3 Statutory Authority .......................................................................................2-3

2.2 Exchange of Continuing Airworthiness Data ............................................................2-4 2.2.1 ICAO Obligation...........................................................................................2-4

2.3 Evidence Indicating that an AD is Warranted ...........................................................2-5 2.3.1 On Receipt of Evidence ...............................................................................2-5

3. Issuing ADs Based on Country of Origin ADs .............................................................. 3-1

3.1 Procedure for Issuing ADs Based on Country of Origin ADs....................................3-1 3.1.1 Purpose of the Procedure for Issuing ADs Based on Country of

Origin ADs ...................................................................................................3-1 3.1.2 Scope of the Procedure for Issuing ADs Based on Country of

Origin ADs ...................................................................................................3-1 3.1.3 References for the Procedure for Issuing ADs Based on Country

of Origin ADs ...............................................................................................3-1 3.1.4 Receiving, Reviewing, Approving and Issuing ADs Based on

Country of Origin ADs...................................................................................3-2 3.1.5 Responsibilities of Airworthiness Specialists of the Airworthiness

Standards Branch ......................................................................................3-10

4. Issuing Unique Australian Airworthiness Directives .................................................... 4-1

4.1 Procedure for Issuing Unique Australian ADs ..........................................................4-1 4.1.1 Purpose of the Procedure for Issuing Unique Australian ADs......................4-1 4.1.2 Scope of the Procedure for Issuing Unique Australian ADs.........................4-1 4.1.3 References for the Procedure for Issuing Unique Australian ADs ...............4-1 4.1.4 Receiving, Reviewing, Approving and Issuing Unique Australian

ADs..............................................................................................................4-2



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5. Drafting and Amending Airworthiness Directives......................................................... 5-1

5.1 Format Standards for AD Drafts and Amendments ..................................................5-1 5.1.1 Purpose of the Format Standards for AD Drafts and Amendments .............5-1 5.1.2 Scope of the Format Standards for AD Drafts and Amendments ................5-1 5.1.3 References for the Format Standards for AD Drafts and

Amendments................................................................................................5-1 5.1.4 AD Format Standards ..................................................................................5-2

5.2 Format for a Draft AD ...............................................................................................5-8 5.2.1 Template......................................................................................................5-8

6. Petition for Review of an Airworthiness Directive ........................................................ 6-1

6.1 Procedure for Reviewing ADs ..................................................................................6-1 6.1.1 Purpose of the Procedure for Reviewing ADs..............................................6-1 6.1.2 Scope of the Procedure for Reviewing ADs.................................................6-1 6.1.3 References for the Procedure for Reviewing ADs .......................................6-1 6.1.4 Reviewing ADs ............................................................................................6-2

7. Revoking Airworthiness Directives ................................................................................ 7-1

7.1 Procedure for Revoking ADs ....................................................................................7-1 7.1.1 Purpose of the Procedure for Revoking ADs ...............................................7-1 7.1.2 Scope of the Procedure for Revoking ADs ..................................................7-1 7.1.3 Delegations for Revoking ADs .....................................................................7-1 7.1.4 References for the Procedure for Revoking ADs .........................................7-1 7.1.5 Revoking ADs ..............................................................................................7-2

7.2 Format for a Draft AD Revocation ............................................................................7-6 7.2.1 Template......................................................................................................7-6

8. Exclusions to Airworthiness Directives......................................................................... 8-1

8.1 Processing Exclusion Applications ...........................................................................8-1 8.1.1 Purpose of the Procedure for Processing Exclusion Applications................8-1 8.1.2 Scope of the Procedure for Processing Exclusion Applications...................8-1 8.1.3 References for the Procedure for Processing Exclusion

Applications .................................................................................................8-1 8.1.4 Overview of Exclusions to ADs ....................................................................8-2 8.1.5 Assessment of Exclusions ...........................................................................8-5



iii

9. Audit of Country of Origin Airworthiness Directives .................................................... 9-1

9.1 Procedure for Ensuring all Country of Origin ADs are Received, Assessed and Issued by CASA ................................................................................................9-1 9.1.1 Purpose of the Procedure for Ensuring all Country of Origin ADs

are Received, Assessed and Issued by CASA ............................................9-1 9.1.2 References ..................................................................................................9-1 9.1.3 Ensuring ADs for New Aircraft Types and Models Entering the

Australian Register are Assessed and Processed. ......................................9-1 9.1.4 Ensuring all Country of Origin ADs are Received by CASA.........................9-2 9.1.5 Procedure for Ensuring all Country of Origin ADs are Assessed by

CASA...........................................................................................................9-3 9.1.6 Procedure for Ensuring Unique Australian ADs are Issued in a

NPRM or Cancelled .....................................................................................9-4

10. Examples of Airworthiness Directives ......................................................................... 10-1

10.1 Sample Draft ADs for Internal Discussion ..............................................................10-1 10.1.1 AD/B767/102 .............................................................................................10-1 10.1.2 AD/LYC/101 Amdt 1...................................................................................10-3 10.1.3 AD/DHC-8/54 Amdt 1.................................................................................10-6 10.1.4 AD/BELL 47/66 Amdt 4..............................................................................10-7

10.2 Sample ADs ...........................................................................................................10-9 10.2.1 AD/B727/162 .............................................................................................10-9 10.2.2 AD/A320/101 Amdt 1 ...............................................................................10-10 10.2.3 AD/PC-12/21............................................................................................10-11

11. Definitions ...................................................................................................................... 11-1

Revision History .................................................................................................................. RH-1

List of Effective Pages ..............................................................................................................iv

Forms

Form 949 Airworthiness Directive Movement Worksheet

Form 951 Request for Review of an Airworthiness Directive

Form 953 Application for an Exclusion from an Airworthiness Directive

Airworthiness Directives Procedures Manual List of Effective Pages


iv

List of Effective Pages

Part No. of Pages Version Date of

Issue

Cover and verso 2 2.0 08/2004

Table of Contents and List of Effective Pages 4 2.0 08/2004

1. Foreword 2 2.0 08/2004

2. The Issue of Airworthiness Directives 6 2.0 08/2004

3. Issuing ADs Based on Country of Origin ADs 18 2.0 08/2004

4. Issuing Unique Australian Airworthiness Directives 12 2.0 08/2004

5. Drafting and Amending Airworthiness Directives 8 2.0 08/2004

6. Petition for Review of an Airworthiness Directive 4 2.0 08/2004

7. Revoking Airworthiness Directives 6 2.0 08/2004

8. Exclusions to Airworthiness Directives 8 2.0 08/2004

9. Audit of Country of Origin Airworthiness Directives 4 2.0 08/2004

10. Examples of Airworthiness Directives 12 2.0 08/2004

11. Definitions 2 2.0 08/2004

Revision History 2 2.0 08/2004

Airworthiness Directives Procedures Manual 1. Foreword


1-1

1. Foreword

Manufacturers of type certificated products are responsible for issuing instructions for continuing airworthiness to address such matters. However, where no instructions have been issued, an AD may be issued to address the known unsafe condition.

Because ADs address critical safety issues, they may impose costly repairs or modifications and short deadlines for making those repairs. Therefore, it is important that ADs are fully supported by documented facts and analysis, and that the background material clearly explains why the action is necessary.

The procedures that follow provide guidance for CASA staff who are responsible for the preparation and issue of ADs. It must be emphasised that the procedures are working tools and adherence to them is important if the AD system is to be consistently administered and understood.

All CASA officers involved in the AD process must read, and become familiar with, the contents of this manual.

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CASR Part 39

This document sets out CASA's procedures for the preparation, issue, distribution and management of Airworthiness Directives (ADs) and the assessment and approval of Exclusions to ADs under Part 39 of the Civil Aviation Safety Regulations (CASRs). ADs are subordinate legislation and must comply with strict legislative requirements. ADs are disallowable instruments issued under CASR Part 39.

AC 39.1(2) ADs identify aircraft and aeronautical products defined in Advisory Circular (AC) 39.1(2) inwhich an unsafe condition exists (and is likely to exist or develop in other products of the same type design) and prescribe the corrective actions to be taken, or the conditions and limitations under which the products may continue to be used.

Civil Aviation Act 1988

ADs are key elements in implementing the safety responsibilities placed on CASA under the Civil Aviation Act 1988. Together with the safety standards imposed through type certification, airworthiness certification requirements and maintenance standards and practices, ADs provide an additional, indispensable level of regulation. The effects of material wear, fatigue, corrosion and deterioration pose substantial hazards to the continued airworthiness of aircraft. However, this can be prevented by the prompt issue of accurate ADs.

Airworthiness Directives Procedures Manual 1. Foreword


1-2

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Airworthiness Directives Procedures Manual 2. The Issue of Airworthiness Directives 2.1 Legislative Basis of ADs


2-1

2. The Issue of Airworthiness Directives

2.1 Legislative Basis of ADs

2.1.1 Civil Aviation Safety Regulations

CASR Part 39

a. An unsafe condition exists in an aircraft or aeronautical product of that kind; and

b. The condition exists, or is likely to exist, or could develop in other aircraft or aeronautical products of that kind.

For the purpose of this manual aeronautical product means:

Any part, apparatus, appurtenance, accessory, instrument, mechanism, equipment (including communication equipment), or material, that is used, or intended for use, in an aircraft and is not part of an airframe.

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CASR Part 39

The power to issue ADs is conferred on CASA under Part 39 of the Civil Aviation Safety Regulations (CASRs).

CASR Part 39

Under Part 39 CASA may issue an AD for a kind of aircraft, or a kind of aeronautical product if:

CASR 39.003, 39.004 and 39.005

Under CASR 39.003, a person must not operate an aircraft covered by an AD, or an aircraft that includes an aeronautical product covered by the AD, except for aircraft or aeronautical products excluded from operation of the AD under sub-regulations 39.004 or 39.005.



2-2

2.1.2 Issuing Authority

For issuing Australian ADs, circulation for public comment will not be required for the following:

● Where the Head of Airworthiness Standards certifies in writing that an unsafe condition exists which warrants issue of an Immediate Safety of Flight AD before consultation

● For minor changes to foreign ADs to align with Australian conditions, and changes to existing Australian unique ADs, providing the changes do not increase the difficulty of compliance for Australian operators

● When the AD documents requirements that are made mandatory in another form by the National Airworthiness Authority (NAA) issuing the Type Certificate—for example a specific limitation included in the certifying country’s regulatory framework

● Where an AD revokes an existing AD or eliminates redundant requirements

● Where an Australian change revises compliance times, corrects typographical errors, or provides comment or clarification notes.

RIS Requirements

The Office of Regulatory Review has exempt CASA from the requirements of a Regulatory Impact Statement for all ADs.

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CASR Part 39

Under Part 39, the Authority may issue ADs. The Director has delegated the power to issue unique Australian ADs to the Head of Airworthiness Standards Branch and many of the Section Heads of the Branch have the delegation to amend these ADs. However, before issuing or amending a unique Australian AD, the Branch must consult with and take into account the comments of CASA’s Chief Operations Officer. Each Section Head within the Branch has the delegation to issue ADs based on foreign mandatory regulatory requirements.


Changed completely and Subsection “RIS Requirements“ added



2-3

2.1.3 Statutory Authority

A primary function of the Airworthiness Standards Branch is to identify unsafe conditions in aircraft and aeronautical products including aircraft engines, propellers, equipment and instruments and to order corrective action to remedy such conditions. ADs are used to notify aircraft Certificate of Registration holders, and other persons involved in the maintenance of aircraft and aeronautical products, of unsafe conditions and to prescribe the conditions and limitations, if any, under which they may continue to be used.

The AD function is an airworthiness certification function with a major continuing airworthiness-related component. By conferring the power to issue ADs on CASA, the Government has given effect to Australia’s obligations as specified under Section 3.2 of Chapter 3 of International Civil Aviation Organisation (ICAO) Manual of Procedures for an Airworthiness Organisation, Document 9389-AN/919, thereby ensuring conformity with the provisions of Annex 8 to the Chicago Convention.

CASA must maintain stringent AD policies and procedures in order to perform its regulatory function and provide AD information for the airworthiness safety programs that it undertakes.

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Airworthiness Directives Procedures Manual 2. The Issue of Airworthiness Directives 2.2 Exchange of Continuing Airworthiness Data


2-4

2.2 Exchange of Continuing Airworthiness Data

2.2.1 ICAO Obligation

As a signatory to the Chicago Convention and, thereby, a member of ICAO, Australia is obligated to exchange continuing airworthiness information with ICAO Member States, as required by Amendment 94 to Annex 8, Chapter 4 to the Convention. The Standards and Recommended Practices contained in ICAO Annex 8, Airworthiness of Aircraft, are used as the basis for ADs as part of the overall continuing airworthiness of Australian aircraft.

CASA receives ADs from ICAO Member States responsible for the Type Certificate (TC), Supplemental Type Certificate (STC), Technical Standard Order (TSO) or other aeronautical parts applicable to aircraft.

Bilateral agreements also require AD information exchange. The Authority exchanges mandatory airworthiness information with other NAAs.

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Airworthiness Directives Procedures Manual 2. The Issue of Airworthiness Directives 2.3 Evidence Indicating that an AD is Warranted


2-5

2.3 Evidence Indicating that an AD is Warranted

2.3.1 On Receipt of Evidence

When evidence is received by the ASSD indicating that an AD may be warranted, the following should be considered.

● The Authority may issue an AD for a kind of aircraft, or a kind of aeronautical product if: ❍ An unsafe condition exists in an aircraft or aeronautical product of that kind; and ❍ The condition exists, or is likely to exist, or could develop in other aircraft or

aeronautical products of that kind.

These ADs generally emanate from unsafe conditions that have been identified from such sources as the Service Difficulty Reporting (SDR) system, surveillance systems, or international transfer of identified safety deficiencies and mandatory airworthiness information.

● The majority of Australian ADs are issued to implement maintenance instructions that have been received by the Authority in the form of: ❍ Foreign ADs; or ❍ NAA approved mandatory instructions that may be contained in manufacturer’s

instructions such as Service Bulletins (SBs).

These ADs/SBs are issued and/or approved by the NAA responsible for the design/manufacture of the product—that is, the current TC, STC, TSO authorisation holder or PMA.

● ADs may be issued to implement mandatory maintenance requirements of NAAs not responsible for the TC, STC, TSO or PMA, after consideration and engineering justification by the Certification Standards and Maintenance Standards Branches.

● Where an AD includes a requirement that changes the contents of an approved Aircraft Flight Manual (AFM) or AFM supplement, then the AD compliance statement may require a copy of the AD to be inserted into the AFM until corrective action is taken that negates the need for the AD.

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Airworthiness Directives Procedures Manual 2. The Issue of Airworthiness Directives 2.3 Evidence Indicating that an AD is Warranted


2-6

Blank page

Airworthiness Directives Procedures Manual 3. Issuing ADs Based on Country of Origin ADs 3.1 Procedure for Issuing ADs Based on Country of Origin ADs


3-1

3. Issuing ADs Based on Country of Origin ADs 3.1 Procedure for Issuing ADs Based on Country of Origin ADs

3.1.1 Purpose of the Procedure for Issuing ADs Based on Country of Origin ADs

This procedure specifies the method of receiving, reviewing, approving and issuing ADs that originate from the country of origin of the aircraft or aeronautical product.

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3.1.2 Scope of the Procedure for Issuing ADs Based on Country of Origin ADs

This procedure is for the use of Airworthiness Specialists in the Airworthiness Standards Branch who are responsible for drafting Country of Origin ADs.

■

3.1.3 References for the Procedure for Issuing ADs Based on Country of Origin ADs

● 3.1.5 Responsibilities of Airworthiness Specialists of the Airworthiness Standards Branch

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CASR Part 39 CASR Part 39

AC 39.1(2) AC 39.1(2) Airworthiness Directives



3-2

3.1.4 Receiving, Reviewing, Approving and Issuing ADs Based on Country of Origin ADs

Delegate reviews assessment to determine Australian AD

requirement

Delegate agrees with

decision?

Airworthiness Specialist drafts AD and prioritises

Airworthiness Specialist amends

AD and AD Cell amends draft AD

Delegate satisfied with

AD?

AD approved

Country of Origin AD

received by CASA

Is an Australian AD

warranted?

Does AD affect

Australian aircraft?

Airworthiness Specialist clears draft document

Delegate reviews AD

AD sent to Airworthiness Specialist Section

AD Cell enters details in database, prints coversheet

and enters in Q drive

AD Cell formats AD and assigns number

Delegate signs AD

AD Cell records decision and updates files and databases

Yes

No

No

No

No

Yes

Yes

Yes

Figure 3-1 Procedure for Issuing ADs Based on Country of Origin ADs

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3-3

AD approved

Does the AD require priority

distribution?

AD Cell to prepare an Instrument, print final copy of the AD and forward to the CASR Part 39 Delegate

CASR Part 39 Delegate assesses final print and signs the Instrument

The AD Cell to prepare a list of applicable aircraft Certificate of

Registration holders and a Minute to Area Offices for

Branch Head signature.

The AD Cell to: - Forward the AD and list of applicable aircraft Certificate of Registration holders to Standards Administration and Support Branch - Fax the signed copy of the covering Minute and the AD to all CASA Area Offices

The Standards Administration and Support Branch sends the AD to applicable aircraft

Certificate of Registration holders by mail (for direct mail AD), or fax or express mail (for

Telex AD)

The AD Cell to prepare a list of applicable aircraft Certificate of

Registration holders and forward the AD to the Standards Administration

and Support Branch

The Standards Administration and Support Branch sends the AD to all applicable

aircraft Certificate of Registration holders at least 2 weeks prior to the effective date

of the AD

The AD Cell to : - Send the Instrument with AD to Attorney General's Department - Publish the AD on the CASA web site - Prepare 3 copies of camera-ready artwork. Forward 2 copies to Airservices Australia Publication office - Include the AD in the current issue list forwarded to the Aviation Safety Promotion Division

Yes No

Figure 3-1: Procedure for Issuing ADs Based on Country of Origin ADs (continued)

AD Cell scans the coversheet, updates the database and files the AD documentation

➜



3-4

Receiving Country of Origin ADs

AD Cell

1. On receipt of an AD originating from the country of origin of an aircraft or aeronautical product, date-stamp the AD and decide which Section and Branch should review it. (See 3.1.5 Responsibilities of Airworthiness Specialists of the Airworthiness Standards Branch.)

Note: ADs relating to maintaining the certification basis of the aircraft or aeronautical product are forwarded to Airworthiness Standards Branch.

2. Before forwarding the AD, enter the following AD details in the documentation database: a. Document (AD) number b. Manufacturer c. Model d. Title/Subject e. Date Issued f. Date Received g. Publisher (that is, FAA, CAA etc) h. Document Code for Country of Origin AD i. Section allocated (that is, Airframe, Systems etc).

3. Print an Airworthiness Directive Movement Worksheet (form 949), scan the AD and the worksheet and file on the Q network drive (Caw_doc).

4. Forward the AD with the Airworthiness Directive Movement Worksheet (form 949) to the relevant Section/Branch.

Note: All immediate safety of flight ADs must be hand-delivered to the Head of the allocated section.

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3-5

Reviewing Country of Origin ADs

Section Head

1. Assign the AD to an Airworthiness Specialist.

Airworthiness Specialist

1. Establish whether an Australian AD is warranted, based on: a. Aircraft on the Australian register b. The technical information provided c. The finding by a NAA that an unsafe condition exists. Proceed to step 2 if the Country of Origin AD is not applicable or step 3 if the Country of Origin AD is warranted.

2. If the Country of Origin AD is not applicable: a. If the Country of Origin AD applies to aircraft not on the Australian Civil Aircraft

Register, document this fact on the worksheet and forward the worksheet and Country of Origin AD to the AD Cell;

or b. If the Country of Origin AD is applicable to aircraft on the Australian Civil Aircraft

Register but is judged not to be warranted, document the reasons why and report to the Part 39 Delegate. (See step 1 under the heading Part 39 Delegate below.)

3. If the Country of Origin AD is warranted: a. If the AD is warranted, decide the distribution priority: Normal or Immediate Safety

of Flight (direct mail or telex). b. Draft the AD in accordance with the AD drafting standards (see Part 5. Drafting

and Amending Airworthiness Directives) and send it electronically to the AD Cell.

Part 39 Delegate

1. If the Country of Origin AD is applicable to aircraft on the Australian Civil Aircraft Register but has been judged by the Airworthiness Specialist not to be warranted, review the documented reasons and decide whether an AD is necessary. If it is decided that an AD is not warranted, forward the worksheet and Country of Origin AD to the AD Cell for scanning and electronic filing.

2. If you decide that an AD is warranted, return the AD to the Airworthiness Specialist.

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3-6

AD Cell

If the AD is not warranted or not applicable to aircraft on the Register

1. Scan the worksheet attached to the Country of Origin AD and file on the Q network drive (Caw_doc).

If the AD is warranted

1. Allocate the AD to a Series and give it a number (ensuring that the AD Series reflects the name of the current holder of the TC).

Note: If the TC holder has changed, the Series name should change to reflect the new holder. If similar aircraft have different TCs, the difference should be reflected in the AD Series—for example, Eurocopter BK117 and Kawasaki BK 117.

2. Enter details of the AD in the AD register database.

3. Format the AD with the signature block.

4. Place the original draft AD, the formatted AD with signature block and the processing worksheet in the red AD folder and forward the folder to the Airworthiness Specialist.

Note: Hand deliver all Priority ADs.


1. Check the AD for errors and, when satisfied, sign and date the document and forward it to the Part 39 Delegate.

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3-7

Part 39 Delegate

1. Assess the AD and either approve or not approve it.

Note: The Part 39 Delegate may amend the AD. However, discuss substantive amendments with the AD drafter (Airworthiness Specialist) to ensure the original intent of the AD has not been altered.

2. Forward the ADs to the AD Cell.

AD Cell

1. If the Country of Origin AD is approved by the Part 39 Delegate: a. Incorporate any corrections and print the final copy of the AD. b. Prepare an Instrument and forward it with the final copy of the AD to the Part 39

Delegate. Or If the Country of Origin AD is not approved by the Part 39 Delegate: a. Update the AD database register to indicate the draft AD was not approved by the

Part 39 Delegate. b. Place the AD draft and supporting documentation on the AD series file.

Note: If the Country of Origin AD is not approved by the Part 39 Delegate, no further action is required and the AD number becomes available for re-use.

Part 39 Delegate

1. Assess the final copy of the AD for final approval and sign the AD Instrument.

2. Return the documents to the AD Cell.

Note: If any AD has a significant impact on service delivery to rural or regional communities, the Executive Manager, Government, Industry and International Relations must be notified.

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3-8

Country of Origin ADs—Immediate Safety of Flight Distribution (Direct Mail or Telex ADs)

AD Cell

1. Prepare the following to advise of the issue of the Priority AD: ❍ A Minute to Area Offices ❍ A list of applicable aircraft and aircraft Certificate of Registration holders from the

Civil Aircraft Register.

2. Forward a copy of the AD and the list of applicable aircraft to the Standards Administration and Support Branch.

3. Ensure that: a. The original AD is forwarded to the Attorney General's Department. b. The signed copy of the covering minute and the AD are faxed to all CASA Area

Offices for information. c. The AD is published immediately on the CASA web site. d. Three copies of camera-ready artwork of the AD are prepared and delivered/filed:

❍ Two copies of the camera-ready artwork of the AD are delivered to Airservices Australia Publication Office for publication in CASR Part 39–105, 106 and 107

❍ The third copy of the AD is filed with other relevant documents.

Note: A hard copy is used so that document integrity can be maintained.

e. The AD is included in the current issue list that is forwarded to the Flight Safety Australia editor.

4. Ensure that: a. All documentation is placed on the AD files. b. The AD database is updated. c. The Airworthiness Directive Movement Worksheet (form 949) is scanned and filed

on the Q network drive with the Country of Origin AD.

Co-ordination and Support Branch

1. Send the AD to the applicable aircraft Certificate of Registration holders by mail (for direct mail ADs), or fax or express mail (for telex ADs).

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3-9

Country of Origin ADs—Normal Distribution

AD Cell

1. Prepare a list of applicable aircraft Certificate of Registration holders from the Civil Aircraft Register.

2. Forward a copy of the AD and the list of applicable aircraft Certificate of Registration holders to the Standards Administration and Support Branch.

3. Ensure that: a. The original AD is forwarded to the Attorney General's Department. b. The AD is published on the CASA web site. c. The AD register database is updated. d. Three copies of camera-ready artwork of the AD are prepared and delivered/filed:

❍ Two copies of the camera-ready artwork of the AD are delivered to Airservices Australia Publication Office for publication in CASR Part 39–105, 106 and 107

❍ The third copy of the AD is filed with other relevant documents.


e. The AD is included in the current issue list that is forwarded to the Flight Safety Australia editor.

4. Ensure that: a. All relevant documentation is placed on the AD files. b. The AD database is updated to reflect the Airworthiness Specialist’s assessment. c. The Airworthiness Directive Movement Worksheet (form 949) is scanned and filed

on the Q network drive with the Country of Origin AD.

Standards Administration and Support Branch

1. Send the AD to each aircraft Certificate of Registration holder at least two weeks prior to the effective date of the AD

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3-10

3.1.5 Responsibilities of Airworthiness Specialists of the Airworthiness Standards Branch

This section describes the responsibilities of Airworthiness Specialists Sections of the Airworthiness Standards Branch for ADs issued for an unsafe condition involving or implicating the design or manufacture of an aircraft or aeronautical product. Note that maintenance-related ADs are covered by the Maintenance Sections.

Note: Many items will cross boundaries. Consultation will often be required across broad boundaries.

AD Elements Airworthiness Standards Branch Section Responsible

ADF—see Avionics Systems Agricultural Spray Systems:

Attachment Airframes Plumbing Systems Pumps:

Direct Drive Systems Electric Systems Ram Air Drive Systems

Aircraft: Emergency Evacuation Airframes Flight Test Airframes Handling Airframes Performance Airframes Stability Airframes Weight and Balance Airframes

Airships—see Balloons/Airships Alternator—Generator Drive Systems:

Electric Systems Hydro-mechanical Systems Mechanical Systems Ram Air Drive Systems

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3-11


Antenna—see Systems Anti-skid Systems:

Electric/Hydraulic Systems Hydro-mechanical Systems

Audio Warning—see Systems Auto Throttle System Systems Auto-pilot:

Actuators—see Servos Computers Systems Servos Systems

Avionics: ADF Systems ADS Systems Antenna Systems Audio Warning Systems DME Systems Doppler Systems EGPWS/TAWS Systems FANS Systems Flight Recorders Systems Emergency Beacons Systems GPS Systems GPWS Systems HF Systems Inertial Nav Systems Intercom Systems Systems Radar Systems SSR Systems TCAS Systems UHF Systems VHF Systems Voice Recorders Systems

➜



3-12


Balloons/Airships: Baskets Airframes Envelope Airframes Gas Bottles Airframes Propane Burner Equipment Systems Gondola Airframes Suspension Equipment Airframes

Batteries Systems Braking Systems:

Wheels Airframes Helicopter Main Rotor Systems

Carburettor Systems Canopies:

Strength Airframes Vision Airframes

Compass Systems Systems Corrosion Airframes Damage Tolerance Airframes DME Systems Doors:

Emergency Operation: Manual Airframes Powered Systems

Fuselage/Wing Airframes Landing Gear Airframes Exit Access Airframes

Doppler Systems Electrical Power Systems:

Control Systems Distribution Systems Generation Systems Indication Systems

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3-13


Emergency: Beacons Systems Exits—see Doors Flotation Airframes Evacuation—see Aircraft Escape Path Lighting Airframes

Empennage Airframes Engine Systems Engine Systems:

Accessory Gearboxes: Engine Mounted Systems Airframe Mounted Systems

Anti-Ice: Actuators Systems Control Systems Indication Systems

Bleed Air: Engine Systems Airframe Systems

Control: Systems Cowls and Fairings Airframes Cowl Flap Systems:

Flaps Systems Actuators:

Electrical Systems Hydraulic Systems Pneumatic Systems Manual Systems

Full Authority Digital Engine Control (FADEC)

Systems

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3-14


Environmental Control: Air Conditioning Units:

Air Cycle Systems Vapour Cycle Systems

Control Systems Heaters Systems Oxygen—see Oxygen Systems

Exhaust: Pipes and Mufflers Systems Jet Pipes Systems Thrust Reversers Systems

Fire: Detection/Indication Systems Extinguishing Systems Materials—Flammability/Toxicity Airframes Prevention Airframes All Power Plant Aspects Systems Equipment Systems

Flight Control Systems: Primary:

Attachment and Linkages Airframes Actuation:

Manual Systems Powered Systems

Structure Airframes Flight Manuals Airframes Fuel Systems Hydraulic Systems:

Components Systems Control:

Mechanical Systems Electric Systems

➜



3-15


Indication Systems Plumbing Systems

ICE Detection Systems Systems ICE/Rain Removal Systems Systems Ignition Systems Systems Indicating Systems Systems Instrument Systems Systems Landing Gear Systems:

Brakes—see Hydraulic systems and Anti-Skid

Doors: Actuation

Electric Systems Hydraulic Systems Mechanical Systems Pneumatic Systems

Attachment and Linkages Systems Structure Airframes

Retraction Mechanism as for Doors : Shock Struts Systems Steering Systems Support Structure Airframes

Life Jackets Airframes Life Rafts Airframes Magnetos Systems Nacelle:

Structure Airframes Pylon:

Attachment Airframes Structure Airframes

Navigational Systems Systems ➜



3-16


Oxygen Systems: Gaseous:

Bottles: Prime carriage Systems Strength aspects Airframes

Plumbing Systems Indication Systems

Oxygen Systems (continued): Liquid:

Converter Systems Plumbing Systems Indication Systems

Chemical Systems Installation Systems

Parachutes Airframes Pressurisation Systems:

Components Systems Control Systems Indication Systems

Pneumatic Systems: Components Systems Control:

Electrical Systems Mechanical Systems

Indication Systems Plumbing Systems

Potable Water Systems Systems Power Recovery Systems Systems Propulsers Systems ➜



3-17


Propellers: Fixed Pitch Systems Variable Pitch Systems Control:

CSU/PCU Systems Feather System:

Pumps Systems Plumbing Systems

Pylons Airframes Radar—see Avionics Radome:

Structure Airframes Propagation Systems

Reduction Gearing—see Engines and Rotor Systems

Rotor Systems: Blades and Blade Retention Airframes Control Airframes Gearboxes Systems Main and Tail Rotor Heads Airframes

Starting Systems: Air Systems Combustion Systems Electrical Systems Mechanical/Manual Systems

Superchargers: Engine Driven Systems Turbo Driven Systems

Slides Airframes Tyres Airframes Voice Recorders—see Avionics Water and Waste Disposal Airframes Wheels Airframes Welding Airframes

■



3-18

Blank page

Airworthiness Directives Procedures Manual 4. Issuing Unique Australian Airworthiness Directives 4.1 Procedure for Issuing Unique Australian ADs


4-1

4. Issuing Unique Australian Airworthiness Directives

4.1 Procedure for Issuing Unique Australian ADs

4.1.1 Purpose of the Procedure for Issuing Unique Australian ADs

This procedure specifies the method of issuing a Unique Australian AD.

■

4.1.2 Scope of the Procedure for Issuing Unique Australian ADs

This procedure is for the use of the Aviation Safety Standards Division staff responsible for drafting Unique Australian ADs.

■

4.1.3 References for the Procedure for Issuing Unique Australian ADs

● CASR 39.001

● 5. Drafting and Amending Airworthiness Directives

● 10.1 Sample Draft ADs for Internal Discussion

● AC 39.1(2) Airworthiness Directives

● ASSD Procedures Manual.

■



4-2

4.1.4 Receiving, Reviewing, Approving and Issuing Unique Australian ADs

On Becoming Aware that an Unsafe Condition Exists


1. When you are aware that an unsafe condition exists, and the condition exists, is likely to exist, or could develop in other aircraft or aeronautical products of the same kind in aircraft on the Civil Aircraft Register, and after discussion with the Section Head, initiate an Unique Australian AD.

Note: The unsafe condition may be made known to the Authority as a result of a defect, incident or accident being reported from within Australia or overseas, or as a result of an AD from another NAA, other than the NAA responsible for the TC.

Section Head indicates a Unique

Australian AD is required

AD can be issued prior to Notice of Proposed Rule

Making

Notice of Proposed Rule Making is

required prior to the issue of the AD

Does the AD require priority

issue?Yes No

Figure 4-1: Initiating Unique Australian ADs

➜



4-3

2. If it is decided that an AD should be initiated, raise a file.

3. Establish whether the AD should be normal, direct mail or telex.

a. If the AD is an Immediate Safety of Flight Unique Australian AD (see Issue of Priority (Direct Mail AD or Telex AD) Unique Australian ADs below), it may be issued without public consultation. However, it will be necessary to seek public comment within 12 months of issuing the AD. Otherwise, the AD must be cancelled after 12 months.

For example, an AD issued to correct post-TC changes may be limited to aircraft not covered by the amended TC, with an expiry date of less than one year.

b. If the AD is for normal distribution (see Issue of Normal Distribution ADs), a Notice of Proposed Rule Making (NPRM) for public consultation is required.

➜



4-4

Issue of Priority (Direct Mail AD or Telex AD) Unique Australian ADs

The following flowchart describes the issue of a priority Unique Australian AD.

AD to be issued prior

to NPRM andRIS

Airworthiness Specialist drafts AD

The AD Cell allocates AD number, formats AD with signature block and enters details in the AD database

Section Head reviews AD and enters in Section database

The Airworthiness Specialist checks draft AD

Does Section Head recommend approval?

Branch Head reviews AD and notifies Executive Manager (ASSD) and Chief

OIperations Officer

Does Branch Head approve AD?

AD Cell to: - Prepare a covering letter to all aircraft Certificate of Registration holders and forward to Standards Administration and Support Branch - Prepare a Minute to Area Managers for Branch Head signature

The Standards Administration and Support Branch sends by fax or express mails the AD to applicable aircraft Certificate of Registration holders

AD Cell to: - Forward AD to Attorney General's Department - Fax covering minute to all CASA Area Managers - Publish AD on web site - Prepare 3 copies of the camera ready-artwork. Forward 2 copies to Airservices Australia Publication Office and file the remaining copy - Forward the AD to Aviation Safety Promotion Division for inclusion in Flight Safety Australia - Update database - If AD is applicable to foreign manufactured aircraft or aeronautical product, forward the AD to the applicable NAA - If AD is applicable to Australian manufactured or designed aircraft or aeronautical product, forward AD to all NAAs known to have the type operating - Place AD documentation on the AD Series file

AD Cell updates AD database and AD draft and documentation placed on AD

Series file

If the AD is still applicable within 12 months, an NPRM must be issued

NoYes

No

Yes

Figure 4-2: Issue of Priority Unique Australian ADs

➜



4-5


1. Draft an AD in accordance with the standards of the AD drafting procedure (see Part 5. Drafting and Amending Airworthiness Directives) and electronically send the draft AD to the AD Cell.

AD Cell

1. Allocate an AD number.

2. Enter details in the AD register database.

3. Format the AD with the signature block.

4. Place the original draft AD and the formatted AD with signature block in the red AD folder, and forward the folder to the Airworthiness Specialist.


1. Check the document for errors and, if satisfied, sign and date the document and forward it to the Section Head.

Section Head

1. Assess the AD and, if satisfied, sign the document for recommendation.

Branch Head

1. Assess the AD, brief the Executive Manager, Aviation Safety Standards and the Chief Operations Officer.

2. Either approve or not approve the AD.

3. Return it to the AD Cell.

Note: If any AD has a significant impact on service delivery to rural or regional communities, the Executive Manager, Government, Industry and International Relations must be notified.

➜



4-6

AD Cell

1. Prepare a minute to the Area Managers for signature by the Branch Head advising of the issue of the Priority AD.

Or

If the AD has not been approved, ensure that:

a. The AD database is updated to reflect the non-approval of the AD.

b. The AD draft and supporting documentation are placed on the AD Series file.

Note: If the AD is not approved by the Branch Head, no further action is required and the AD number becomes available for re-use.

2. Forward a copy of the AD and the list of applicable aircraft to the Standards Administration and Support Branch.

3. Ensure that:

a. The original AD is forwarded to the Attorney General's Department.

b. The signed copy of the covering minute and the AD are faxed to all Area Offices for information.

c. The AD is published immediately on the CASA web site.

d. The AD register database is updated.

e. Three copies of camera-ready artwork of the AD are prepared and delivered/filed: ❍ Two copies of the camera-ready artwork of the AD are delivered to Airservices

Australia Publication Office for publication in CASR Part 39 – 105, 106 and 107 ❍ The AD draft, the third copy and supporting documentation are placed on the

AD Series file.


f. The AD is included in the current issue list that is forwarded to the Flight Safety Australia editor.

g. If the AD is applicable to an aircraft or aeronautical product manufactured in a foreign country, a copy of the AD shall be forwarded to the NAA.

➜



4-7

h. If the AD is applicable to an aircraft or aeronautical product of Australian design or manufacture, a copy of the AD shall be forwarded to the NAAs of countries known to have the type operating.

Note: The manufacturer should supply a list of these countries.


1. Send the AD to all applicable aircraft Certificate of Registration holders by mail (for direct mail AD), or fax or express mail (for Telex AD).


1. Within 12 months, if the AD includes continuing actions, draft a NPRM in accordance with ASSD procedures and a suitable newspaper advertisement.

➜



4-8

Issue of Normal Distribution ADs

For normal distribution ADs, the following Public Consultation process applies.

Does Section Head

requ ire an AD?

Notice o f Proposed Rule

M aking and Regu la tory Im pact

Sta tement requ ired

A irworth iness Specia lis t d ra fts the AD, the NPRM and

newspaper advertisem ent

Section Head reviews documenta tion

Does Section Head recomm end

approva l?

AD Cell updates AD databaseand p laces AD dra ft and

NPRM docum enta tion on AD Series file

Branch Head reviews docum enta tion and brie fs Assistan t D irector, Avia tion

Safety S tandards

Does Branch Head approve

docum enta tion?

AD Cell a lloca tes AD num ber if no t a lready a lloca ted

Docum enta tion is re leased for

pub lic com ment fo r

60 days

Coord ina tion and Support Branch p lace advertisem ent in na tiona l p ress and on CASA web s ite

Airworth iness Specia list reviews responses and prepares a sum mary o f responses

The Airworth iness Specia list am ends the

AD

Does the AD need to be

amended?

The Section Head reviews the docum enta tion , and recom mends

approva l

Does Section Head recom m end

approva l?

The Branch Head reviews documenta tion

Does Branch Head Approve

docum entation?

Regu latory process com ple te .

AD (or am ended AD) can now be issued, if

not a lready issued as a prio rity AD

No

No

No

No

Airworth iness Specia lis t ra ises a f ile

Yes

Yes

Yes

Yes

Yes

Yes

No

No

Figure 4-3: Procedures for Drafting a Notice of Proposed Rule Making and Regulatory Impact Statement for

a Normal Issue Unique Australian AD ➜



4-9


1. Draft:

a. AD in accordance with the procedure for drafting ADs (see Part 5. Drafting and Amending Airworthiness Directives).

b. NPRM in accordance with the ASSD Procedures Manual.

A Discussion Paper may be issued with an example of the AD prior to releasing the NPRM. This is usually undertaken to establish industry response to a draft AD (see 10.1 Sample Draft ADs for Internal Discussion).

Consult with ASSD Airworthiness Specialists when developing the AD, NPRM or Discussion Paper.

c. A suitable newspaper advertisement.

2. Forward the draft AD, NPRM (or Discussion Paper) and newspaper advertisement to the Section Head for review.

Section Head

1. Review the draft AD, NPRM (or Discussion Paper) and newspaper advertisement and, if acceptable, recommend approval to the Branch Head.

Branch Head

1. Review the final draft AD, NPRM (or Discussion Paper) and the newspaper advertisement, and brief the Assistant Director, Aviation Safety Standards.

Where applicable, forward the documents to other ASSD Branches for clearance.

2. Approve, or not approve, the draft AD and NPRM documentation.

AD Cell

1. If not approved by the Branch Head, ensure that:

a. The AD database register is updated to reflect the non-approval of the AD.

b. The AD draft and supporting documentation are placed on the AD Series file.

Note: If the AD is not approved by the Branch Head, no further action is required and the AD number becomes available for re-use.

Or

If approved by the Branch Head, allocate an AD number and forward the NPRM documentation to the Standards Administration and Support Branch.

Refer to procedure 3.1 Procedure for Issuing ADs Based on Country of Origin ADs to establish the AD Series, unique designator and amendment level.

➜



4-10


1. Place the advertisement in the national press and on the CASA web site asking for public comment on the draft AD by a given date.

Note: The public comment period is normally 60 days.


1. When the public comment period has expired, review the responses. (See the ASSD Procedures Manual.)

2. Prepare a summary of responses and, if you consider it necessary, amend the AD to reflect the responses. It may be necessary to consult with the Section Head and/or Branch Head(s) if you are considering amending the AD.

Note: If the summary of responses arises from a Discussion Paper and a Unique Australian AD is required, an NPRM for public comment may still be required.

3. Forward the summary of responses, final disposition and the draft AD to the Section Head.

Section Head

1. Review the documentation and, if the document complies with ASSD procedures, forward it to the Branch Head recommending approval.

Branch Head

1. Review the documentation and, if approved, forward the documentation to the Standards Administration and Support Branch for publication.

2. Sign the approved AD, notify the Executive Manager, Aviation Safety Standards and forward the AD file to the AD Cell.

AD Cell

1. Amend any corrections and print the final copy of the AD.

2. Prepare and forward the final copy of the AD to the Branch Head.

Branch Head

1. Assess the AD for final approval, sign the AD and return it to the AD Cell.

➜



4-11

AD Cell

1. Forward the AD and a list of applicable aircraft to the Standards Administration and Support Branch.

2. Ensure that:

a. The original AD is forwarded to the Attorney General's Department.

b. The AD register database is updated.

c. Three copies of camera-ready artwork of the AD are prepared and delivered/filed: ❍ Two copies of the camera-ready artwork of the AD are delivered to Airservices

Australia Publication Office for publication in CASR Part 39 – 105, 106 and 107 ❍ The AD draft, the third copy and supporting documentation are placed on the

AD Series file.

d. The AD is published on the CASA web site.

e. The AD is included in the current issue list that is forwarded to the Aviation Safety Promotion Division for inclusion in Flight Safety Australia.

f. If the AD is applicable to an aircraft or aeronautical product manufactured in a foreign country, a copy of the AD shall be forwarded to the NAA.

g. If the AD is applicable to an aircraft or aeronautical product of Australian design or manufacture, a copy of the AD shall be forwarded to the NAAs of countries known to have the type operating.

Note: The manufacturer should supply a list of these countries.


1. Ensure that the AD is sent to all applicable aircraft Certificate of Registration holders at least two weeks prior to the effective date of the AD.

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4-12

Blank page

Airworthiness Directives Procedures Manual 5. Drafting and Amending Airworthiness Directives 5.1 Format Standards for AD Drafts and Amendments


5-1

5. Drafting and Amending Airworthiness Directives

5.1 Format Standards for AD Drafts and Amendments

5.1.1 Purpose of the Format Standards for AD Drafts and Amendments

This procedure specifies the standard format to be applied when drafting and amending ADs.

■

5.1.2 Scope of the Format Standards for AD Drafts and Amendments

These standards are for the use of Aviation Safety Standards Division staff who are responsible for drafting, amending and processing ADs.

■

5.1.3 References for the Format Standards for AD Drafts and Amendments

● CASR Part 39

● CASA's Manual of Controlled Documents

● 3.1 Procedure for Issuing ADs Based on Country of Origin ADs

● 4.1 Procedure for Issuing Unique Australian ADs

● AC 39.1(2) Airworthiness Directives

● 5.2 Format for a Draft AD (template)

● 10.2 Sample ADs.

■



5-2

5.1.4 AD Format Standards

List of Standards to be Applied

The Airworthiness Specialist responsible for drafting the AD must ensure that the following are included in each AD:

● A series identification and reference code

● Distribution number and priority level

● Title

● Applicability

● Requirement

● Compliance

● Background

● Justification

● Effect on operators

● Notes (optional).

A detailed explanation of these elements follows.

See 5.2 Format for a Draft AD for the template to be used, 10.1 Sample Draft ADs for Internal Discussion (sample applications of the template) and 10.2 Sample ADs.

Series Identification and Reference Code

AD Cell: Create a suitable reference code for each AD. The code must include:

● A unique designator representing the AD Series to which it belongs

● A number representing the order within the AD Series

● The amendment level of the AD if applicable.

Example

Example of the Series identification and reference code for an AD for a Boeing 767 may be AD/B 767/25 Amdt 2 where: ❍ B 767 represents the unique designator representing the AD Series, and ❍ 25 Amdt 2 represents the number and amendment level of the AD.

Airworthiness Specialist: Ensure that the AD is allocated to the correct AD Series.

➜


Subsection “Requirements” (on page 4) changed completely.



5-3

Distribution Number and Priority Level

Airworthiness Specialist: Decide whether the AD will be issued as a normal or an Immediate Safety of Flight AD.

AD Cell: Enter the correct distribution number and the priority code on the AD.

Title

Airworthiness Specialist: Ensure that the title of the AD reflects the aircraft or aeronautical product to which the AD applies and does not refer to any action required on the aircraft or aeronautical product such as an inspection or modification.

Example

A title for an AD that requires inspection of the stabiliser bar tubes and assembly of a Bell 47 helicopter would be Stabiliser Bar Tubes and Assembly.

Applicability

Airworthiness Specialist: Ensure that the applicability of the AD is clearly stated. This can be set out by one or more of the following:

● Aircraft series

● Aircraft kind

● Aircraft models

● Manufacturer’s name

● Manufacturer’s service document reference

● Serial number

● Part number

● Production number

● Batch number

● Modification basis

● TC or STC number.

➜



5-4

Requirements

Airworthiness Specialist: Ensure that each requirement is clear, concise and complete by addressing the following points:

● The general intent of the requirement must be clear by describing the action required.

Example

The requirement to implement a foreign AD should be written as:

Inspect the lower wing attachment for corrosion in accordance with FAA AD XX.XXX…. rather than Action in accordance with…….

“Inspect the lower wing attachment for corrosion in accordance with Service Bulletin XYZ Rev A or a later revision approved by the National Airworthiness Authority”

When such a statement is included in an AD, the registration holder may action any approved revision of the Service Bulletin from Revision A to the latest issue.

“Inspect the lower wing attachment for corrosion in accordance with FAA AD XX or a later revision.”

Note: If the FAA AD refers to a manufacturer’s Service Bulletin XYZ Rev A. No later revisions of the SB are authorised until the FAA AD has been revised.

● Each requirement must be numbered sequentially.

Example

1. Inspect the tailspring attachment bolt.

2. Replace the tailspring attachment bolt.

● If the requirement refers to a specific part, include the part number whenever possible.

➜

CASR 39.001 ● A requirement may refer to a document that contains details of the action to be undertaken such a manufacturer’s Service Bulletin. Regulation 39.001 allows CASA to include a statement in the AD such as:

CASR 39.001 ● A requirement may also refer to foreign AD that contains details of the action to be undertaken. Regulation 39.001also allows CASA to include a statement in the AD such as:



5-5

● Include diagrams to provide clarification of the requirements. It is recommended that diagrams be used whenever possible to describe specific areas of an aircraft or aeronautical product that requires inspection. These diagrams must be correctly annotated.

● To correct an unsafe situation, an AD may direct an amendment to the Aircraft Flight Manual (AFM), the Minimum Equipment List (MEL) or Configuration Deviation List (CDL).

Example

1. Amend Aircraft Flight Manual as indicated in FAA AD 98-19-15RI.

● If a Country of Origin AD requires a report to be sent to the NAA (for example, FAA), the Australian AD shall reflect a note that all reports be sent to CASA.

● If the AD permits inspection by the pilot, the AD must state the following:

The inspection may be carried out by the pilot provided the pilot has completed a approved training program.

Compliance

Airworthiness Specialist: Enter the compliance details for each requirement. The compliance must be expressed in simple terms so there is no doubt as to when the requirement has to be met.

In drafting the compliance for an AD, the Airworthiness Specialist must consider the following points:

● Compliance statements must not be retrospective when issued and no compliance period can begin prior to the effective date of the AD.

● Compliance periods for an AD based on a foreign AD from the NAA responsible for the TC will be the same as the foreign AD unless circumstances require extending the period.

● Numbering of compliance paragraphs must align with the numbering given for the requirement paragraphs.

Example

An AD where requirement 1 is to inspect and requirement 2 is to modify at a later time, the compliance is stated as

1. For requirement 1, inspect within 5,000 hours time in service.

2. For requirement 2, modify prior to 10,000 hours time in service.

➜



5-6

● The compliance period may be specified as: ❍ Hours time in service

❍ Calendar period

❍ Calendar date

❍ Flight cycles

❍ Landings

❍ Engine cycles

❍ Time since overhaul ❍ Any other applicable periods or cycles.

● Compliance times should be stated in the AD rather than referring to a SB or foreign AD. However, on occasions when this is not possible due to the complexity, the compliance statement should always indicate if a repeat interval is required.

● The effective date of the AD must be included at the end of the compliance paragraphs.

● If a required action must be repeated at regular intervals it should be included in the compliance requirements. The repeat interval should follow the compliance for initial completion.

Example An AD is to take effect on 12 September 2000, with initial compliance required within the next 100 hours time-in-service. After the initial compliance, the action is to be repeated every 200 hours time-in-service. The compliance can be written as: ...within 100 hours time in service from 12 September 2000, and then at intervals of not more than 200 hours time in service.

● The phrase “unless already carried out” provides credit for maintenance done before the effective date of the AD. It may be used in conjunction with a time limit on claiming credit for past work.

Example

The compliance can be written as: ...unless already carried out within 50 hours time in service before 12 September 2000, within the next 100 hours time in service from 12 September 2000.

● Inappropriate Terms: It is not appropriate to express compliance times in terms such as, the next annual inspection, or for an engine AD, in terms of engine overhaul periods.

● Indefinite Terms: It is not appropriate to express compliance times in terms such as, as soon as possible.

➜



5-7

Background

Airworthiness Specialist: Ensure that the background provides an objective description of the unsafe condition and how the actions of the AD will address the difficulty. If applicable, the background must contain a brief history of the amendments of the AD, the initial issue date and the date of the last two amendments.

In drafting the background statement, you may consider the following points: ● Why the AD action is necessary ● How the requirements remedy the unsafe situation ● If remedial action is interim or final ● What options the operators may have (provide information that may help operators to

develop an alternative means of compliance) ● What changes have been made if amending an existing AD.

Justification

Note: The justification and the effect on operators (the next element) are not published with the AD.

Airworthiness Specialist: Include a justification based on safety aspects and state why it is necessary for Australian registered aircraft.

Effect on Operators

Airworthiness Specialist: Include the effect on operators, the number of aircraft affected and, if available, provide an estimate of the cost such as labour and parts.

Notes

Airworthiness Specialist: You may include notes in any appropriate place within the AD. Notes are used to provide information that may be helpful to the person who has to comply with the AD.

Ensure that the notes appear in the AD in italic font, and, if more than one note is used in a section of an AD, number each note consecutively.

■

Airworthiness Directives Procedures Manual 5. Drafting and Amending Airworthiness Directives 5.2 Format for a Draft AD


5-8

5.2 Format for a Draft AD

5.2.1 Template

Use the following template for draft ADs. See 10.1 Sample Draft ADs for Internal Discussion for sample applications of the template.

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998) Part 39–105CIVIL AVIATION SAFETY AUTHORITYSCHEDULE OF AIRWORTHINESS DIRECTIVES

AD/AB/## TITLE **/00

Applicability:

Requirement:

Note:

Compliance:

This Airworthiness Directive becomes effective on ** ***** 20**.

Background:

Justification:

Effect on Operators:

AUTHORISATION:

Draft

Printed Name Signature Date

Recommended


Recommended


DELEGATION:

Approved

Not Approved Printed Name Signature Date

Page 1 of ___

■

Airworthiness Directives Procedures Manual 6. Petition for Review of an Airworthiness Directive 6.1 Procedure for Reviewing ADs


6-1

6. Petition for Review of an Airworthiness Directive

6.1 Procedure for Reviewing ADs

6.1.1 Purpose of the Procedure for Reviewing ADs

■

6.1.2 Scope of the Procedure for Reviewing ADs

This procedure is for the use of Branch Heads and Airworthiness Specialists responsible for the issue of Ads.

■

6.1.3 References for the Procedure for Reviewing ADs

● AC 39.1(2)

● Request for Review of an Airworthiness Directive (form 951).

■

CASR 39.006

This procedure defines the method of reviewing ADs after a petition has been received as per CASR 39.006.

CASR 39.006 and 39.007

● CASR 39.006

● CASR 39.007



6-2

6.1.4 Reviewing ADs

The following flowchart describes the review of ADs.

Notify petitioner ofnon-compliance and decision not

to review (< 28days)

Request complies with

CASR Part 39.6

Record review process details 1. Proposed action 2. When CASA will review the AD

Notify petitioner that a review will be undertaken

(<28 days)

Conduct review

Record Decision either: - AD shall not be amended or cancelled - AD shall be cancelled - AD shall be amended to reflect the manufacturer's revision or modification, or STC - AD shall be amended to reflect the NAA's amendment

Notify petitioner that a decision has been

completed

Publicise outcome to

industry

Request to review an AD

lodged by petitioner

Yes

No

Figure 6-1: Procedure for Review of an Australian AD



6-3

Part 39 Delegate Responsible for the AD

The Part 39 Delegate is either the Head of Airworthiness Standards or a Section Head from the Airworthiness Standards Branch.

Branch Head

or If the petition complies with CASR 39.006, complete steps 3 to 6 below.

3. Give the petitioner a notice within 28 days of receipt indicating what action the Authority proposes to take to review the AD set out in the Request for Review of an Airworthiness Directive, and when the Authority proposes to review the AD.

4. Forward the Request for Review of an Airworthiness Directive and copy of the notice to the Section Head to carry out a review.

Section Head and Applicable Airworthiness Specialist

5. Review the petition and decide on one of the following actions: ❍ If an unsafe condition still exists and is not addressed by other means, the AD

shall not be amended or cancelled. ❍ If the applicability, requirements and compliance stated in the petition are

mandatory with respect to the CASRs or the manufacturer has implemented a revision to the continuing airworthiness instructions, and as a result the unsafe condition either no longer exists or is addressed by the manufacturer’s instructions, the AD shall be cancelled.

❍ If the manufacturer has implemented a modification, or a revision to the continuing airworthiness instruction, or an STC has been issued which may change the conditions of the AD, and as a result an unsafe condition either no longer exists or is addressed by other means, the AD shall be amended to reflect the manufacturer’s revision or modification or the STC.

❍ If the NAA has amended its AD and as a result an unsafe condition still exists, the

AD shall be amended to reflect the NAA’s amendment.

Note: Extreme caution should be used regarding when cancelling ADs. One must consider whether an unsafe condition no longer exists or is addressed by other means for current aircraft on the register as well as aircraft (old or new) that may enter the register some time later.

CASR 39.006 1. On receipt of the Request for Review of an Airworthiness Directive (form 951) assess whether the petition complies with CASR 39.006.

CASR 39.006 2. If the petition does not comply with CASR 39.006, give the petitioner a notice within28 days indicating the reasons why CASA will not proceed with a review of the AD;



6-4

Branch Head

Once an outcome of a review has been completed, notify the petitioner of the outcome and publicise the outcome to industry.

This may be achieved by using ❍ AD background ❍ Flight Safety Australia ❍ Airworthiness Advisory Circular ❍ CASA web site.

Note: The Authority’s decision is reviewable through the Administrative Appeals Tribunal.

■

Airworthiness Directives Procedures Manual 7. Revoking Airworthiness Directives 7.1 Procedure for Revoking ADs


7-1

7. Revoking Airworthiness Directives

7.1 Procedure for Revoking ADs

7.1.1 Purpose of the Procedure for Revoking ADs

This procedure defines the method for revoking an Airworthiness Directive (AD).

■

7.1.2 Scope of the Procedure for Revoking ADs

This procedure is for the use of Aviation Safety Standards Division staff who are responsible for revoking an AD.

■

7.1.3 Delegations for Revoking ADs

Those who hold the delegation for approval of ADs also hold the delegation for revoking ADs.

7.1.4 References for the Procedure for Revoking ADs

● CASR Part 39

● CASA Manual of Controlled Documents

● 6.1 Procedure for Reviewing ADs

● AC 39.1(2), Airworthiness Directives

● 7.2 Format for a Draft AD Revocation (template).

■



7-2

7.1.5 Revoking ADs

The following flowchart describes the procedure for revoking ADs.

Airworthiness Specialist has

reviewed the AD and has decided

to cancel it

Airworthiness Specialist drafts the

AD revocation

AD Cell formats the draft AD revocation

Airworthiness Specialist checks the AD revocation

and signs document

Part 39 Delegate assesses AD revocation

Part 39 Delegate approves the

revocation of the AD

Part 39 Delegate signs AD revocation

as "not approved"

Draft AD revocation and documentation placed on AD

series file

Part 39 Delegate signs AD revocation as "approved"

AD Cell to prepare and print final copy of the ADrevocation and forward it to the Part 39 Delegate

Part 39 Delegate assesses final print and signs the instrument

The AD Cell to: - Send the AD revocation to Attorney General's Department - Publish the AD revocation on the CASA web site - Update AD database - Prepare 3 copies of camera-ready artwork and forward 2 copies to Airservices Australia Publication office - Forward AD revocation to Aviation Safety Promotion Division for inclusion in Flight Safety Australia

AD Cell provides a list of applicable aircraft Certificate of Registration holders

The Standards Administration and Support Branch shall send AD revocation to applicable

aircraft Certificate of Registration holders

The AD Cell files the documentation and updatesthe Foreign AD data base if applicable.

Yes

No

Figure 7-1: Procedure for Revoking an AD



7-3

Introduction

The Authority may cancel an AD if:

● Manufacturers' maintenance instructions incorporate the requirement of the AD.

● The requirement of the AD is a one-off and all affected aircraft on the Australian register are in compliance and there is no possibility of aircraft entering the Australian register with the unsafe condition—liaison with the Compliance Division should be carried out to confirm this.

● The information in the AD is no longer applicable.

● An unsafe condition no longer exists.

Note: When an AD is amended, the amended AD cancels and supersedes the preceding issue of that AD. Further action to revoke the superseded issue is not required (refer to the making words for an amended AD).

Procedure


1. Draft the AD revocation and ensure that the following are included: ❍ The AD series ❍ The AD unique identifier ❍ The title ❍ Distribution number ❍ Indication that AD is “cancelled” ❍ Background.

See the template in 7.2 Format for a Draft AD Revocation.

2. Electronically send the draft AD revocation to the AD Cell.

AD Cell

1. Format the AD revocation with the signature block.

2. Place the original draft AD revocation and the formatted AD revocation with signature block in the red AD folder, and forward the folder to the Airworthiness Specialist.

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7-4


1. Check the document for errors and, when satisfied, sign and date the document and forward the AD revocation to the Part 39 Delegate (Section Head).

Part 39 Delegate

1. Assess the AD revocation and approve or not approve it.

2. Forward it to the AD Cell.

Note: The Part 39 Delegate may amend the AD revocation. However, discuss the proposed amendment with the Airworthiness Specialist who drafted the revocation.

AD Cell

1. If not approved by the Part 39 Delegate, ensure that the AD revocation and supporting documentation is placed on the AD series file. No further action is required;

or

If approved by the Part 39 Delegate, amend corrections and print the final copy of the AD revocation.

2. Forward the final copy of the AD revocation to the Part 39 Delegate.

Part 39 Delegate

1. Assess the AD revocation for final approval, sign the AD and return the documents to the AD Cell.

AD Cell

1. Provide an address list of all applicable aircraft Certificate of Registration holders is prepared from the Civil Aircraft Register.


1. A copy of the AD revocation is forwarded to each aircraft Certificate of Registration holder.



7-5

AD Cell

1. Ensure that:

a. The AD revocation instrument is forwarded to the Attorney General's Department.

b. The AD revocation is published on the CASA web site.

c. The AD register database is updated.

d. Three copies of camera-ready artwork of the AD are prepared and delivered/filed: ❍ Two copies of the camera-ready artwork of the AD are delivered to Airservices

Australia Publication Office for publication in CASR Part 39 – 105, 106 and 107 ❍ The third copy is filed with the other documents.


e. The AD revocation is included in the current issue list that is forwarded to the Flight Safety Australia editor.

f. The documentation database is updated, if applicable to a Country of Origin AD, to reflect the Airworthiness Specialist’s assessment.

a. Remaining relevant documentation is placed on the AD Issue file and the AD Series file.

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Airworthiness Directives Procedures Manual 7. Revoking Airworthiness Directives 7.2 Format for a Draft AD Revocation


7-6

7.2 Format for a Draft AD Revocation

7.2.1 Template

Use the following template for a draft AD revocation.

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998) Part 39–105CIVIL AVIATION SAFETY AUTHORITYSCHEDULE OF AIRWORTHINESS DIRECTIVES

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below revokesairworthiness directive AD/PUMA/13.

Eurocopter AS 332 (Super Puma) Series Helicopters

AD/S-PUMA/13 Tail Rotor Drive Shaft 10/99

Requirement: CANCELLED

Background: The requirements of this Directive have now been incorporated into the Eurocopter AS332 MasterServicing Recommendations (PRE) and are therefore deemed to be mandatory for all Australianoperators. This Directive is therefore cancelled with effect from 7 October 1999.

AUTHORISATION:

Draft


Recommended


Recommended


DELEGATION:

Approved

Not Approved Printed Name Signature Date

Page 1 of ___

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Airworthiness Directives Procedures Manual 8. Exclusions to Airworthiness Directives 8.1 Processing Exclusion Applications


8-1

8. Exclusions to Airworthiness Directives

8.1 Processing Exclusion Applications

8.1.1 Purpose of the Procedure for Processing Exclusion Applications

This procedure specifies the method of reviewing, assessing, and approving or not approving an application by a person for an Exclusion from an AD.

■

8.1.2 Scope of the Procedure for Processing Exclusion Applications

■

8.1.3 References for the Procedure for Processing Exclusion Applications

● CASR Part 39 (39.004 and 39.005)

● AC 39.1(2), Airworthiness Directives

● Application for an Exclusion from an Airworthiness Directive (form 953)

■

CASR Part 39.004 and 39.005

This procedure is for the use of staff of the Aviation Safety Compliance Division (ASCD) and the Aviation Safety Standards Division (ASSD). The Branch and section head of the Airworthiness Standards Branch have the delegated power to approve Exclusions. Trained Airworthiness Specialists of the ASCD with sub-regulations 39.004 and 39.005 delegation may also approve Exclusions.


8.1.1, 8.1.2, 8.1.3 and 8.1.4 changed completely. Previous Figure 8.1 “Exclusion Process” removed.



8-2

8.1.4 Overview of Exclusions to ADs

Exclusions may be permanent or limited to a specified period.

Conditions or other requirements may be specified as part of the Exclusion, to ensure that the safety risk is addressed.

Any Exclusion approved must be to an acceptable level of safety based on thorough engineering assessment.

Examples of circumstances where an Exclusion may be appropriate are:

● The AD is not applicable to a particular aircraft, due to model or serial number, or modification status, not defined in the AD; or

● Different method of inspection to that specified; or

● AD requires a replacement part which is not available from the manufacturer and a suitable inspection method is technically justified; or

● CAR 35/36 approved repair/replacement/modification in lieu of installation of the Original Equipment Manufacturer (OEM) service kit; or

● Extension or release from fixed retirement lives, where justified for example, by use of directed inspections or a Supplemental Structural Inspection Program; or

● Operational constraints, such as speed or weight reductions, are such that the AD requirements are not now applicable.

Note: Exclusions should not be granted in cases where the actions required by the AD are already, or will be, contained in an approved maintenance program. This is because CASA has no way of ensuring that future revisions of the AD, or changes to the maintenance program, will align.

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8-3

Inspection in Lieu of Replacement of parts

An Exclusion may be approved to extend the compliance period with suitable inspection. This will only be approved on rare occasions when an AD requires replacement of parts and the manufacturer is unable to supply these parts. To approve such an exclusion the delegate must ensure that the application is fully supported with a technical justification including

● An approval from the manufacturer or an approval from the NAA

● The unavailability of the parts has been established from the manufacturer

● The problem has not arisen due to poor planning by the registration holder.

Previous Exclusions May Be Used as a Guide

An Exclusion previously granted may be able to be used as a guide to assess a new application for similarity and thus enable an application to be granted/approved by the delegate.

Applicants

A person (the applicant) may apply for an Exclusion using form 953, Application for an Exclusion from an Airworthiness Directive.

A corporation is required to identify an officer of the body corporate who may be served with documents. That person may sign the Application for an Exclusion from an Airworthiness Directive on behalf of the corporation.

A person nominated by the aircraft Certificate of Registration holder may sign the Application for an Exclusion from an Airworthiness Directive on behalf of the holder. Such a person must hold a letter of authority from the aircraft Certificate of Registration holder. A copy of such an authorisation must be attached to each application.

Validity of Exclusion on Transfer of Certificate of Registration

The granting of an Exclusion does not automatically transfer to a new aircraft Certificate of Registration holder.

A change of aircraft Certificate of Registration holder requires a re-assessment of the conditions and limitations for the continued applicability of any Exclusion. A new application must be submitted.

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8-4

Fleet Exclusions

A single application for Exclusion to address matters relating to a fleet of aircraft may be accepted. Each aircraft or aeronautical product is to be identified on the application.

Applications for Exclusion that may apply to more than one aircraft of a fleet of similar aircraft means that the AD should be reviewed and possibly changed to meet the approved Exclusion.

The Role of CAR 35/36 Authorised Persons in Industry

■

CAR 35/36

CASR Part 39

CAR 35/36 authorised persons in industry do not hold authorisation for the purposes of Part 39, and therefore cannot grant Exclusions.

Applications for Exclusion based on modifications, repairs or replacements approved by industry CAR 35/36 authorised persons must be supported by sufficient technical detail to allow the CASA delegate to assess the application.



8-5

8.1.5 Assessment of Exclusions

The following flowchart shows the Area Office criteria for processing an Exclusion application.

AO research submission for an

Exclusion application

Australian AD is identical to manufacturer's SB or NAA AD

Other (including where CASA has made minor changes to

manufacturer's SB or NAA AD)

Is there a similar Exclusion for guidance and assessment?

Exclusion approved

Yes

No

AD requirement and compliance?

Exclusion endorsed by

manufacturer or NAA?

AO assessmentAO assessment

Request ASSD technical advice

Exclusion approved

Exclusion rejected

Exclusion rejected

AcceptsAccepts RejectsRejects

No

Yes

Part 39 Delegate decides

Part 39 Delegate decides

All submissions should include: - Manufacturer's or NAA endorsement; or - Engineering or technical justification, e.g. CAR 35

Figure 8-1: Area Office Exclusion Process

➜


8.1.5 Subsection “Receiving and Reviewing Exclusion Applications” (see next page) changed.completely.



8-6

Receiving and Reviewing Exclusion Applications

Area Office Airworthiness Specialist

1. On receipt of Application for an Exclusion from an Airworthiness Directive (form 953), register and allocate a number.

2. Check whether the AD requirement and compliance are identical to the manufacturer's Service Bulletin (SB) or Country of Origin AD. Depending on the outcome, proceed to step 3 or 6.

3. If the AD is identical to SB or Country of Origin AD, check whether the Exclusion is supported by the manufacturer or the NAA. Depending on the outcome proceed to step 4 or step 5.

4. If the Exclusion is supported by the manufacturer or NAA with a "No Technical Objection" and your assessment of the submission is found acceptable, forward the application to the Part 39 delegate with a recommendation for approval. Proceed to step 1 under Part 39 Delegate.

5. If the Exclusion is not supported by manufacturer or NAA proceed to step 6.

6. By referring to the exclusion data base on the CASA website, check whether previous Exclusions against the AD have been granted. Depending on outcome proceed to step 7 or step 9.

7. If a similar Exclusion has been granted, assess its applicability.

8. If you assess that the Exclusion application is similar to a previous Exclusion granted against the AD and your assessment of the documented submission is found acceptable, forward the application to the Part 39 delegate with a recommendation for approval. Proceed to step 1 under Part 39 Delegate.

9. If no similar Exclusion has been granted against the AD, research and assess the application of the documented submission as follows: ❍ If the Exclusion application references a CAR 35 submission, forward the

submission to the CASA Engineering Support Section for assessment. ❍ If the application does not reference a CAR 35 submission and you have sufficient

information and knowledge, and the assessment of the submission is acceptable, forward the application to the Part 39 Delegate with a recommendation for approval. Proceed to step 1 under Part 39 Delegate.

❍ If you consider technical specialist assessment is necessary, forward the submission to the Exclusion Officer (AD Cell) Airworthiness Standards Branch for technical evaluation.

➜



8-7

CASA Engineering Office (Airworthiness Engineer)

1. Assess the application as above and either; ❍ Forward the recommendation to the Part 39 Delegate for approval or rejection; or ❍ If you consider technical specialist assessment is necessary, forward the

submission to the Exclusion Officer (AD Cell) Airworthiness Standards Branch for technical evaluation.

Technical Evaluation

Exclusion Officer

1. Register the request for technical assessment from the Area Office and allocate the application to the appropriate Section in the Airworthiness Standards Branch.

Section Head

2. Assign an Airworthiness Specialist to assess the submission.


3. Advise the Area Office that you are assessing the submission.

4. Assess and review the submission. Document the findings.

5. Forward the recommendation to the Part 39 delegate.

Post-assessment Action

Part 39 Delegate/Section Head

1. On receipt of the advice/recommendation from the Airworthiness Specialist, make a determination. Ensure all conditions applying to the Exclusion are included in the determination. Return the determination with the required information to the Area Office and the Exclusion Officer.

Area Office

2. Advise the applicant of the determination in writing including all conditions applicable to the granting of the Exclusion.

3. If the Exclusion application has not been approved advise the applicant in writing the reasons and also advise the applicant that the decision is reviewable through the Administrative Appeals Tribunal.

➜



8-8

Exclusion Officer

4. Place the documents on the AD Exemption/Exclusion files.

5. Record Exclusion information on the database.

6. Forward exclusion details to the Webmaster to update the exclusion register.

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Airworthiness Directives Procedures Manual 9. Audit of Country of Origin Airworthiness Directives 9.1 Procedure for Ensuring all Country of Origin ADs are Received, Assessed and Issued by CASA


9-1

9. Audit of Country of Origin Airworthiness Directives 9.1 Procedure for Ensuring all Country of Origin ADs are Received, Assessed and Issued by CASA

9.1.1 Purpose of the Procedure for Ensuring all Country of Origin ADs are Received, Assessed and Issued by CASA

The procedure specifies the method of ensuring that:

1. All Country of Origin ADs, however issued, relevant to Australian registered aircraft are received by the Authority.

2. All Country of Origin ADs for new aircraft types and models entering the Australian register are assessed by the Authority.

3. All other ADs received by the Authority relevant to aircraft on the Civil Aircraft Register are assessed and processed by the Authority.

4. All Unique Australian ADs are issued within a NPRM and are cancelled after 12 months from the effective date of the AD.

■

9.1.2 References

● Procedure for ADs originating from NAAs

● AC 39.1(2), Airworthiness Directives.

■

9.1.3 Ensuring ADs for New Aircraft Types and Models Entering the Australian Register are Assessed and Processed.

When a new aircraft type is entered on the Australian register, the following action must be taken.

The Civil Aircraft Register Controller

1. Notify the Head of the Airworthiness Standards Branch and the AD Cell of the entry of the new aircraft type or model.

➜



9-2

AD Cell

1. Write to the NAA responsible for the TC requesting ADs be forwarded to the AD Cell, Certification Standards Branch, ASSD.

2. Distribute the Country of Origin ADs applicable to the new aircraft type and model to the relevant Section Heads for assessment (see Part 3. Issuing ADs Based on Country of Origin ADs).

3. Ensure an AD database is maintained for all aircraft types or models currently registered in Australia (see 9.1.4 Ensuring all Country of Origin ADs are Received by CASA).

4. Notify the Head of the Airworthiness Standards Branch and Section Heads when an aircraft type has been removed from the Civil Aircraft Register for more than 12 months.

9.1.4 Ensuring all Country of Origin ADs are Received by CASA

The AD Cell is responsible for creating and maintaining a database of all Country of Origin ADs received. The database must include:

● AD (document) number

● Manufacturer

● Model

● Date issued

● Date received

● Publisher (that is, FAA, CAA etc)

● Document Code (CofO AD, Non-CofO AD etc)

● Section allocated (that is, Aircraft, Systems, Air Transport, General Aviation, etc).

Procedure

1. At least every six months, obtain from the relevant NAA a list of current ADs applicable to aircraft on the Australian register.

Note: This may be achieved by accessing the NAA web site, other electronic documentation or by requesting information by correspondence.

➜



9-3

2. On receipt of the list, ensure all Country of Origin ADs have been received by CASA by comparing the database of received Country of Origin ADs with the list received from the NAA.

3. Contact the NAA and request any ADs that have not been received.

■

9.1.5 Procedure for Ensuring all Country of Origin ADs are Assessed by CASA

AD Cell

1. Produce a monthly report from the AD Database of all NAA ADs that have not been assessed by applicable Sections.

2. Forward the report to the Heads of Certification Standards and Maintenance Standards and Section Heads.

Section Head

1. Produce a report consisting of a list of: a. Normal ADs that are outstanding for over a month. b. Immediate Safety of Flight ADs that are outstanding.

2. Pass this information to the Head of Certification Standards or Maintenance Standards, whichever is applicable.

3. Take measures to ensure that all: a. Normal priority Country of Origin ADs outstanding for over two months are

assessed as soon as possible. b. Outstanding Immediate Safety of Flight ADs are assessed immediately.

Note: If a breakdown in the procedure occurs, the Head of the Airworthiness Standards Branch must review the procedures and implement and document measures to rectify the problem.

■



9-4

9.1.6 Procedure for Ensuring Unique Australian ADs are Issued in a NPRM or Cancelled

AD Cell

1. Produce a monthly report of Unique Australian ADs that have been issued with an NPRM.

Note: These are usually Immediate Safety of Flight ADs.

2. Forward the report to the Head of the Airworthiness Standards Branch and the Section Heads.

Section Head

1. Decide whether to issue an NPRM or cancel the AD after 12 months form the effective date of the AD.

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Airworthiness Directives Procedures Manual 10. Examples of Airworthiness Directives 10.1 Sample Draft ADs for Internal Discussion


10-1

10. Examples of Airworthiness Directives

10.1 Sample Draft ADs for Internal Discussion

10.1.1 AD/B767/102

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998) PART 39-105CIVIL AVIATION SAFETY AUTHORITYSCHEDULE OF AIRWORTHINESS DIRECTIVES

AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the followingAD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (beingaction that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft oraeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section;and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in thecompliance section.

Boeing 767 Series Aeroplanes

AD/B767/102 Fuel Pump Conduit Sleeving 8/98TX

Applicability: All Boeing Model 767 aircraft line positions 001 to 689 inclusive and 691

Requirement: 1. Perform a one-time visual inspection to confirm installation of Teflon sleeves over the electricalwires to the boost pumps installed inside conduits in the main and centre wing tanks in accordancewith Boeing Message M-7200-98-01080, dated 18 March 1998.

2. If any Teflon sleeve is found to be missing during the inspection required by Requirement 1 ofthis AD, inspect to detect damage to the wires, in accordance with Boeing Message M-7200-98-01080, dated 18 March 1998.

a. If no damage is found, install a Teflon sleeve in accordance with Boeing MessageM-7200-98-01080, dated 18 March 1998.

3. If any damage is found, inspect to detect damage to the conduits in accordance with BoeingMessage M-7200-98-01080, dated 18 March 1998.

a. If no damage is found, replace any damaged wire and install a Teflon sleeve inaccordance with Boeing Message M-7200-98-01080, dated 18 March 1998.b. If any damage is found, replace any damaged wire and conduit and install a Teflonsleeve, in accordance with Boeing Message M-7200-98-01080, dated 18 March 1998.

4. Operators are to report all instances of missing sleeving, sleeving that required rework, and anyinstances of damaged wiring to Boeing. The report should include the following:

a. the aircraft model number;b. the aircraft line positionc. the total number of hours time-in-service accumulated on the airplane;d. the total number of flight cycles accumulated on the airplane;e. a description of the area of the wiring where the sleeving was missing; andf. a description of the damage found.

Note 1: FAA AD 98-10-10 Amdt 39-10522 dated 12 May 1998

Page 1 of 2

➜



10-2

Boeing 767 Series AeroplanesAD/B767/102 (Continued)

Compliance: 1. For requirement 1; within 60 days of the effective date of this AD

2. For requirements 2 and 3; before next flight, following the requirement 1 inspection.

3. For requirement 4; within 10 days of accomplishing the required inspections and rectifications.

This Airworthiness Directive becomes effective on 27 May 1998.

Background: This AD requires a one-time inspection to confirm the installation of Teflon sleeves over certainelectrical wires inside conduits installed in the fuel tanks and corrective actions if found necessary.This action is prompted by a report of missing Teflon sleeves which protect the wiring insulationfrom chafing. The actions specified in this AD are intended to prevent such chafing which couldeventually expose the electrical conductor creating the potential for arcing from the wire to theconduit and consequent fuel tank fire/explosion.

Justification:Country of Origin AD. Aircraft operating in Australia are affected by the same safety issue.

Effect onOperators 10 aircraft affected. It is estimated that labour costs will be extensive however no actual costs

have been quoted in the FAA AD.

Electronic signature block)

R SmithDelegate of Civil Aviation Safety Authority

15 November 1999

Page 2 of 2

➜



10-3

10.1.2 AD/LYC/101 Amdt 1


AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes airworthinessdirective AD/LYC/101 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that theaction set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition)be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstancesmentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c)at the time mentioned in the compliance section.

Lycoming Piston Engines

AD/LYC/101Amdt 1

Superior Cylinders 3/97

Applicability: All Lycoming TIO/LTIO-540-A2C, -J2B, -F2BD, -J2BD, -N2BD, -R2AD, -S1AD and IO-540-M1B5D engines fitted with Superior Air Parts Inc. cylinders part number (P/N) SL54000-A1,SL54000-A2, SL54000-A2P, SL54000-A20P and SL54000-A21P with serials numbers 001through 650.

Requirement: 1: To prevent the possible loss of a cylinder head, the subsequent loss of engine power and apossible engine fire, carry out:

a. A visual inspection of applicable cylinder assemblies for evidence of combustion leaksand/or cracking in the area adjacent to the location of the inlet valve seat as detailed inFigure 1, and

b. An 80psi pressure “wet” leak check of the cylinder assemblies paying particular attentionto the area detailed in Figure 1.

c. Remove from service before further flight, any cylinder showing either combustion gasleakage or cracks.

2. Remove applicable cylinders from service

Note 1: FAA Airworthiness Directive 97-01-04 Amdt 39-10522 refersNote 2: For the purpose of Requirement 1.(B), a wet leak check may be carried out by using soapywater or a commercial leak detector product such as “Sherlock Leak Detector”.

Page 1 of 3

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10-4

Lycoming Piston EnginesAD/LYC/101 Amdt 1 (Continued)

Compliance: 1. For requirement 1,a Cylinders with a time in service greater than 250 hours; within 5 hours time in service

from the effective date of this directive and thereafter at intervals not to exceed 25hours time in service.

b Cylinders with a time in service less than 250 hours; prior to exceeding 250 hours timein service and thereafter at intervals not to exceed 25 hours time in service.

2. For requirement 2, prior to exceeding 300 hours cylinder time in service.

This Amendment becomes effective on 27 February 1997.

Background: This directive was originally issued to require the inspection of certain cylinder assemblies. Therequirement follows the CASA investigation of a PA31-350 cylinder head failure in service. Thisamendment reflects the issue of an FAA airworthiness directive based on the results on theCASA investigation and the subsequent revision to the cylinder manufacturer’s publishedrequirements.

FAA Airworthiness Directive 97-01-04 increases the engine models applicable, reduces thecompliance threshold and adds a terminating action by replacement of affected cylinders.

The original issue of this Airworthiness Directive became effective on 27 November 1996.

Justification: This directive was originally issued in response to the investigation of the 6 October 1996 Airlines ofTasmania Piper PA31-350 engine failure event. In that event, the top of a cylinder head separated from the cylinderduring take-off from King Island Airport. The head separation resulted in an significant loss of power and created apotential for an in-flight engine fire. A leak check of the 5 other cylinders on the subject engine revealed head leaksin 2 cylinders. The failed cylinders had only achieved 495 hours TIS.

Page 2 of 3

➜



10-5

Lycoming Piston EnginesAD/LYC/101 Amdt 1 (Continued)

The failed cylinder and the 2 leaking cylinders were obtained for examination at the CASA Airworthiness BranchFailure Analysis Group facility in Canberra. An examination of the fractured cylinder identified the failure cause tobe a fatigue crack initiating in the area between the cooling fins and the inlet valve seat insert. Of concern, the crackprogressed rapidly from the initiation to catastrophic failure. One of the leaking cylinders was cut open to reveal afatigue crack initiating from the bottom of the cooling fins and progressing to the inlet valve insert flange. Theresults of the investigation, including a copy of the original issue of AD/LYC/101, were forwarded to the FAA andSuperior Air Parts.

This amendment reflects the issue of an FAA AD on the is subject. FAA AD 97-01-04 requires compliance withSuperior Air Parts SB 96-002 Rev. A. Unfortunately, the requirements of SB 96-002 Rev. A still includerequirements detailed in the original issue which were considered by CASA to be inappropriate for the purpose ofidentifying a defective cylinder.

The primary inspection requirement detailed in SB 96-002 Rev.A is to carry out a dye penetrant inspection of thecylinder head at the bottom of the cooling fins. A dye penetrant inspection of the cylinder head at the bottom ofcylinder head cooling fins, especially when the material surface is granular, is considered by CASA to be of limitedvalue.

The designated area of the cylinder head to be inspected, as detailed in a diagram in the service bulletin, is also ofconcern. The cylinder cut open and examined by the Failure Analysis Group had a fatigue crack initiating outsidethe service bulletin circle area. An inspection in accordance with the service bulletin would not have detected thecrack in that cylinder. These concerns with the original issue of SB 96-002 were advised to the FAA and Superiorprior to the issue of the FAA AD and the revision to the SB.

Accordingly; this amendment maintains the visual and wet leak check requirements detailed in the original issue ofthis directive. The amendment also continues the expanded area of concern as detailed in Figure 1 of the directive.The amendment does however, extend the engine models applicable and provides a terminating action, as detailed inthe FAA AD. A copy of this amendment has been forwarded to the FAA and Superior Air Parts for advice andcomments as appropriate.

Effect on Operators: Superior Brisbane has advised; Whilst all of the original cylinders of concern (L/TIO-J2BD350 hp engines) have now been withdrawn from service, based on the extended number of engine models nowapplicable, there are a further 9, possibly 15 applicable cylinders in service in Australia. The operators affected havebeen advised and a recall program initiated. Again, Superior is covering the cost of the recall program.

(Electronic signature block)


15 November 1999Page 3 of 3

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10-6

10.1.3 AD/DHC-8/54 Amdt 1


AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes airworthinessdirective AD/DHC-8/54 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that theaction set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition)be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstancesmentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c)at the time mentioned in the compliance section.

Bombardier (Boeing Canada/de Havilland) DHC-8 Series Aeroplanes

AD/DHC-8/54Amdt 1

Fuselage Cable Trough 13/98

Applicability: DHC-8 aeroplanes Models 102, 103, 106, 201, 202, 301, 311, 314 and 315 with serial numbers 3through 540 inclusive, excluding serial number 462.

Requirement: Incorporate de Havilland modification 8/2705 in accordance with Bombardier Inc. De HavillandService Bulletin 8-53-66 dated 27 March 1998.

Note: Transport Canada AD CF-98-08 R1 refers

Compliance: The compliance remains unchanged as ‘At the next ‘C’ check, but no later than 36 months after18 June 1998 (the effective date of the original issue of this directive)’.

This Amendment becomes effective on 3 December 1998.

Background: A DHC-8 aeroplane experienced an uncommanded engine shut-down in flight due to a shortcircuit between adjacent wires located in the left underfloor cable trough. The short circuitresulted in a 28 volt signal being applied to the fuel shut-off valve. An investigation revealedthat the short circuit was caused by chafing of wires on sharp edges on the cherrymax rivets inthe cable trough.

The directive requires the installation of new cable tie-mounts in the cable trough and sealingrivets to prevent chafing of wires.

This amendment increases the serial number range of the affected aeroplanes.

The original issue of this Airworthiness Directive became effective on 18 June 1998.

Justification: Country of origin AD. Aircraft operating in Australia are affected by the same safety issue.

Effect on Operators: Some inconvenience, this directive increases the serial number range by 21 aircraft.Bombardier estimates that 70 to 100 man-hours will be required to incorporate themodification, depending on aircraft model.



15 November 1999Page 1 of 1

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10-7

10.1.4 AD/BELL 47/66 Amdt 4


AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes airworthinessdirective AD/BELL47/66 Amdt3 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requiresthat the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafecondition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in thecircumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirementsection; and (c) at the time mentioned in the compliance section.

Bell 47 (All Variants) Series Helicopters

AD/BELL 47/66 STABILISER BAR TUBES 10/86Amdt 4 AND ASSEMBLY

Applicability: All models of the Bell 47 and all variants.

Requirement: Inspect the stabiliser bar tubes and assembly as detailed in Bell Service Bulletin (SB) No 50-(04-20)-73-1, Revision A dated 3 March 1975 or Kawasaki Bell SB KSB- Bell 338 dated 15March 1975 as appropriate.

Compliance: Inspect before the first flight of each day after 31 October 1986

If the inspection is carried out by the pilot in command, the pilot in command must enter theprecise AD reference in a certification made on the maintenance release.

This Amendment becomes effective on 31 October 1986

Background: This amendment has been issued to include Kawasaki- Bell helicopters and the applicableKawasaki Bell Service Bulletin.

Amendment 3 called up the latest revision of the Service Bulletin, which excluded the use ofparticular stabiliser tubes.

Amendment 2 clarified how daily inspection certification may be made by the pilot incommand.

The initial amendment was introduced to detect cracked stabiliser bar tubes and/or tie rods thatare in tension.

Amendment 3 of this Airworthiness Directive became effective on 7 April 1975

Amendment 2 of this Airworthiness Directive became effective on 28 February 1974

Initial issue of this Airworthiness Directive became effective on 7 October 1970

Page 1 of 2

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10-8

Bell 47 (All Variants) Series HelicoptersAD/BELL 47/66 Amdt 4 (Continued)

Justification: A number of aircraft have found to be cracked. This type of cracking is considered asafety of flight issue and remedial action is required.

Effect on Operators: Minor. Inspection takes approximately 10 minutes. 71 aircraft affected.


R SmithDelegate of the Civil Aviation Safety Authority

15 November 1999

Page 2 of 2

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Airworthiness Directives Procedures Manual 10. Examples of Airworthiness Directives 10.2 Sample ADs


10-9

10.2 Sample ADs

10.2.1 AD/B727/162


AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below issues thefollowing AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirementsection (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to theaircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in therequirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the timementioned in the compliance section.

Boeing 727 Series Aeroplanes

AD/B727/162 Vertical Beam Web and Forward Flange ofthe Aft Pressure Bulkhead

13/99

Applicability: All Model 727 aircraft

Requirement: Action in accordance with the technical requirements of FAA AD 99-18-05 Amdt 39-11271.

Note: Boeing Service Bulletins 727-53-0210 and 727-53-0055 refer.

Compliance: As specified in the Requirement document for the initial and repetitive inspections, with a revisedeffective date of 30 December 1999

This Airworthiness Directive becomes effective on 30 December 1999.

Background: The FAA received reports of fatigue cracks found in the vertical beam web and forward flange ofthe aft pressure bulkhead. Such fatigue cracking could result in the inability of subject verticalbeam to withstand the fail-safe loads, and consequent loss of cabin pressurisation

R SmithDelegate of Civil Aviation Safety Authority15 November 1999

Page 1 of 1

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10-10

10.2.2 AD/A320/101 Amdt 1


AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes airworthiness directive AD/A320/101and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (beingaction that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in theapplicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in therequirement section; and (c) at the time mentioned in the compliance section.

Airbus Industrie A319/A320/A321 Series Aeroplanes

AD/A320/101Amdt 1

Main Landing Gear Sliding Tube 13/99

Applicability: All Model A319, A320, and A321 aircraft, all serial numbers up to and including 0875; withouthaving fully accomplished Airbus Industrie Service Bulletin A320-32-1189.

Requirement: 1. Perform a detailed visual inspection of both main landing gear (MLG) sliding tubes inaccordance with Airbus Industrie Service Bulletin (SB) A320-32-1189.

a. If cracks are detected around the area between the jacking dome bush and the hole for the HPinflation valve or the hole for the lower electrical harness assembly, before further flight,replace the sliding tube.

b. If other cracks are detected, contact the manufacturer.

Compliance: 1. Within 500 hours time in service after 12 August 1999. Thereafter, repeat at intervals not toexceed 500 hours time in service.The Compliance 1 initial inspection time remains unchanged by this issue.This Amendment becomes effective on 30 December 1999.The original issue of this Airworthiness Directive became effective on 12 August 1999.

Background: During a maintenance inspection/overhaul process on the MLG sliding tubes, a wrongly performedNDT inspection could have led to local heating, which as a consequence, could initiate cracks.Such cracking could lead to landing gear collapse.Amendment 1 is issued in response to a new DGAC AD which introduces on-going repetitiveinspections for the main landing gear sliding tubes.

R SmithDelegate of Civil Aviation Safety Authority15 November 1999

Page 1 of 1

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10-11

10.2.3 AD/PC-12/21


AIRWORTHINESS DIRECTIVEFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes airworthiness directive AD/PC-12/21.

Pilatus PC-12 Series Aeroplanes

AD/PC-12/21 Trailing Edge Flap Inboard Attachment Fitting 12/99

Requirement: CANCELLED.

Background: The requirements of this Directive are contained in AD/PC-12/19.


15 November 1999

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Airworthiness Directives Procedures Manual 11. Definitions


11-1

11. Definitions

Term Meaning

AD Cell Consists of the AD Controller and Exclusions Officer in the Airworthiness Standards Branch.

AD Series Defines the broad class of aircraft or aeronautical product to which the AD is applicable.

Airworthiness Directive An instrument issued under CASR Part 39.

CASR Part 39 specifies the kind of aircraft or aeronautical product and the conditions required to ensure safety.

ADs are disallowable instruments.

Country of Origin ADs ADs issued by the National Airworthiness Authority (NAA) responsible for the holder of the TC or STC.

For example, FAA ADs are the Country of Origin ADs for all Boeing aircraft.

Distribution Number and Priority Level The Distribution number refers to the Aircraft Information Regulation and Control (AIRAC) number that the AD was distributed under.

The Distribution number is followed by the priority level of the AD — for example DM for Direct Mail or TX for Telex.

Effective Date The date the AD becomes effective, which is to be stated in each AD.

Exclusion An exclusion may be granted by CASA in writing, in accordance with Part 39, to free a person from an obligation or liability contained in an AD on the grounds that:

● the AD is not applicable to the particular aircraft because of build, modification or repair status;

● an equivalent safety proposal will provide an alternative method of correcting the unsafe condition;

● a modification or repair approved under regulation 35 of CAR 1988 has or will remove the unsafe condition; or

● a supplemental type certificate installed in the aircraft or aeronautical product removed the unsafe condition.

An exclusion may include conditions.

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Airworthiness Directives Procedures Manual 11. Definitions


11-2

Term Meaning

Immediate Safety of Flight ADs Immediate Safety of Flight ADs are either issued as direct mail or telex ADs.

● Direct Mail ADs are issued where there is a requirement for ADs to be issued prior to the effective date of the next normal AD issue. These ADs may require action within 50 hours time in service or 50 cycles or less than 42 days. Direct mail ADs are forwarded to affected aircraft registered operators by mail.

● Telex ADs require action prior to further flight or within 14 days from the date of issue. Telex ADs are forwarded to affected aircraft registered operators by fax or express post.

NAA National Airworthiness Authority

Normal ADs ADs issued and distributed to aircraft registered operators approximately two weeks before the effective date of the current issue which is the Aircraft Information Regulation And Control (AIRAC) date.

Notice of Proposed Rule Making (NPRM) A paper indicating the problems, alternatives and the reasons for the proposed rule. The NPRM must include the proposed AD.

Refer to the ASSP Procedures Manual

STC Supplemental Type Certificate.

TC Type Certificate.

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Airworthiness Directives Procedures Manual Revision History


RH-1

Revision History

Note: The Revision History shows the most recent amendment first. Scroll down the table to view details of previous amendment information.

Version Date Details

2.0 August 2004 2.1.2 Changed completely and Subsection “RIS Requirements“ added.

5.1.4 Subsection “Requirements” changed completely.

8.1.1, 8.1.2, 8.1.3 and 8.1.4 changed completely.

Previous Figure 8.1 “Exclusion Process” removed.

8.1.5 Subsection “Receiving and Reviewing Exclusion Applications” changed completely.

Form 953 Changed.

1.1 January 2001 8.1.4 Amendment made to listing of examples of circumstances where an Exclusion may be appropriate.

1 August 2000 First issue of the manual (online edition).

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Airworthiness Directives Procedures Manual - Revision History Revision History


RH-2

Blank page

Form 949 08/2000 Airworthiness Directives Movement Worksheet Page 1 of 1

Airworthiness Directive Movement Worksheet

Manufacturer: Model:

Document No: Date Issued:

Document Type: Publisher:

Title:

Section: Date Allocated: Classification: Specialist Name: Date Closed:

❏ M ❏ M (NFA) ❏ Noted ❏ Info

Remarks:

❏ M ❏ M (NFA) ❏ Noted ❏ Info

Remarks:

1. Revision History

Form 951 06/2002 Request for Review of an Airworthiness Directive Page 1 of 2

Request for Review of an Airworthiness Directive

Applicant requesting petition: _________________________________

Address: _________________________________Suburb: ____________________________

City: ______________________Postcode: _________________________

Telephone: _________________________________ Fax: ____________________________________

Email _____________________________________

Position: _______________________________________________________________________________

Office:_________________________________________________________________________________

Basis for Request: (eg. section and paragraph, if applicable)

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Suggested Amendment:

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Signature of Applicant:

Signature: Date: _____ / _____ / ______

Note: The use of this form is not compulsory.

Form 951 06/2002 Request for Review of an Airworthiness Directive Page 2 of 2

Comments by CASA Head (if applicable):

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Signature of Head:

Signature: Date: _____ / _____ / ______

Mail or fax this copy to: Civil Aviation Safety Authority Airworthiness Standards Branch Attn: AD Cell GPO Box 2005 CANBERRA ACT 2601 Fax (02) 6217 1442

Form 953 08/2004 Application for an Exclusion from an Airworthiness Directive Page 1 of 2

Application for an Exclusion from an Airworthiness Directive

Application/Instrument No:

Applicant:

Name: ARN Number (if applicable):

Address: Telephone:

Fax:

Signature: Date:

Airworthiness Directive for which Exclusion applies: AD ______ / _______/ _______ Amdt________________

Part 39.004 Does the exclusion require an alternative method of correcting the unsafe condition? ❑

Part 39.005 Is the exclusion because an unsafe condition has ceased to exist? ❑

Aircraft Particulars: Manufacturer: Registration:

VH-______ _____ ______ Model: Serial Number:

Aeronautical Product Particulars (if applicable): Name: Manufacturer:

Type /Model: Serial Number:

Justification: (Use separate sheet if insufficient space)

For Part 39.004, An Alternative Means of Compliance, has Manufacturer or National Airworthiness Authority agreed

to a No Technical Objection (NTO) ? ❑ Yes ❑ No

CASA Determination:

Delegate's Approval:

Signature: ____________________________________________________ Date: _____ / _____ / ______

Printed Name: ____________________________________________________ Instrument No.: ____________ Delegate of the Civil Aviation Safety Authority

The exclusion is issued pursuant to Civil Aviation Regulations 1998 Part 39 sub-regulation 39.004 / 39.005 This exclusion applies to the nominated aircraft or aeronautical product. The exclusion may cease when the Certificate of Registration holder changes.

The decision by the delegate may be reviewed through the Administrative Appeals Tribunal.

(Tick the appropriate box)

Form 953 08/2004 Application for an Exclusion from an Airworthiness Directive Page 2 of 2

CASA Area Office Assessment/Recommendation — Airworthiness Inspector/Engineer:

Signature: ____________________________________________________ Date: _____ / _____ / ______

Printed Name: ____________________________________________________

CASA Central Office Airworthiness Specialist Assessment/Recommendation (if applicable):

Signature: ____________________________________________________ Date: _____ / _____ / ______

Printed Name: ____________________________________________________

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