Airworthiness Directive 98-20-14 Summary

Subject: Manufacturer: Effective Date: Supersedes:

98-20-14 - Electrical wires Bornbardier 10/27/1998 NIA

For complete information on this AD, please see:

Ab 98·20· 14 (FAA Copy) AO 98-20-14 (From CFR) AD 98-20-14 Preamble

Model Applicability:

Category: Recurring: Superseded By:

Airframe No 99-2 1-09

Model OHC-8-102, -103, -106, -201 , -202, -301 , -311, and -315 series airplanes; serial numbers 3

through 519 inclusive, excluding serial number 462; certificated in any category.

NO 1 E 1: l his AO applies to each airplane identified i11 the precedir 19 applicability provision,

regardless of whether it has been modified, altered, or repaired in the area subject to the

requirements of this AD. For aitplanes that have been modified, altered, or repaired so that the

performance of the requirements of this AD is affected, the owner/operator must request approval

for an alternative method of compliance in accordance with paragraph (b) of th is AD. The request

should include an assessment of the effect of the modification, alteration , or repair on the unsafe

condition addressed_ by this AD; and, if the unsafe condition has not been eliminated, the request

should il'lclude specific proposed actions to address it.

Applicable Manufacturers Service Information:

Bombardier Service Bulletin S.S. 8-53-66

Summary: This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier

Model DHC-8-102, -103, - 106, - 201 , --202, -301, ~311, and - 315 series airplanes, that

requires a one-time inspection to detect chafing of electrical wires in the cable trough below the

cabin floor; repair, if necessary; insta1\ation of additional tie-mounts and tie-wraps; and application

of sealant to rivet heads. This amendment is prompted by issuance of mandatory continuing

airworthiness information by a foreign civil airworthiness authority. The actions specified by this

AD are intended to prevent chafing of electrical wires, which could result in an uncommanded

shutdown of an engine during fl.ight.

98-20-14 BOMBARDIER, INC. (Formerly de Havilland, Inc.): Amendment 39-10781. Docket 98-NM-172-AD.

Applicability: Model DHC-8-102, -103, -106, -201, -202, -.301, -311, and -315 series airplanes; serial numbers 3 through 519 inclusive, excluding serial number 462; certificated in any category.

NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of

------1-his AD. The reques~ttkl-iftcl.t1de-~e-effecl-t)f---the-meclifie,-a-l.temtren,6r-repair-en--m,e-- - ­unsaf e condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Compliance: Required as indicated, unless accomplished previously. To prevent chafing of electrical wires, which could result in an uncommanded shutdown of an engine during

flight, accomplish the following: (a) Within 36 months after the effective date of this AD,'perform a one-time visual inspection to detect

chafing of electrical wires in the cable trough below the cabin floor; install additional tie-mounts and tie-wraps; and apply~~ds (reference Bombardier Modification 8/2705); in accordance with Bombardier Service Bulletin S.B. 8-53-66, dated March 27, 1998. If any chafing is detected during the inspection required by this paragraph, prior to further flight, repair in accordance with the service bulletin.

(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, New York Aircraft Certification Office (ACO), FAA, Engine and Propeller Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, New York ACO.

NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the New York ACO.

(c) Special flight permits may be_ issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.

(d) The actions shall be done in accordance with Bombardier Service Bulletin S.B. 8-53-66, dated March 27, 1998. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Bombardier, Inc., Bombardier Regional Aircraft Division, Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Engine and Propeller Directorate, New York Aircraft Certification Office, 10 Fifth Street, Third Floor, Valley Stream, New York; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

NOTE 3: The subject of this AD is addressed in Canadian airworthiness directive CF-98-08, dated March 26, 1998.

(e) This amendment becomes effective on October 27, 1998.

Federal Register/ Vol. 63, No. 183/ Tuesday, September 22, 1998/ Rules and Regulations 50501

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 98-NM-172-AD; Amendment 39-10781; AD 98-20-14]

RIN 2120-AA64

Airworthiness Directives; Bombardjer Model DHC-8-102, -103, -106, -201, -20 , -30 , - eries -Airplanes

AGENCY: Federal Aviation Administration, DOT. ACTION: Final rule.

SUMMARY: This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier Model DHG-8-102, 103, 106, 201, 202, -301, -311, and -315 series airplanes, that requires a one-time inspection tc;> detect chafing of electrical wires in tre cab I e trough below the cabin floor; repair, if necessary; installation of additional tie-mounts and tie-wraps; and application of sealant to rivet heads. This amendment is prompted by

- issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent chafing of electrical wires, which could result in an uncommanded shutdown of an engine during flight. DATES: Effective October 27, 1998.

The incorporation by reference of certain publications listed in the regulations is approved by the Di rector of the Federal Register as of October 27, 1998. ADDRESSES: The service information referenced in this AD may be obtained from Bombardier, Inc., Bombardier Regional Aircraft Division, Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. This information may be examined at the Federal Aviation Administration (FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington; or at the fAA, Engine and Propeller Directorate, ['Jew York Aircraft Certification Office, 10 Fifth Street, Third Floor, Valll:)y Stream, New York; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. • FOR FURTHER INFQRMATION CONTACT: Peter Cuneo, Senjor Aerospace Engineer, Systems and Flight Test Branch, ANE-172, FAA, Engine and Propeller Directorate, New York Aircraft Certification Office, 10 Fifth Street, Third Floor, Valley Stream, New York

50502 Federal Register/ Vol. 63, No. 183/ Tuesday, September 22, 1998/ Rules and Regulations

11581; telephone (516) 256-7506; fax estimated to be $90,000, or $6,000 per ai rplanes; serial numbers 3 through 519 (516) 568-2716. airplane. inclusive, excluding serial number 462;

SUPPLEMENTARY INFORMATION: A The cost impact figures discussed certificated in any category.

proposal to amend part 39 of the Federal above are-based on assumptions that no Note 1: This AD applies to each airpla11e Aviation Regulations (14 CFR part 39) to operator has yet accomplished any of identified in the preceding applicability · I d · h" d" . (AD) the requirements of this AD action , and provision, regardless of whether it has been incu eana1rwort mess 1rect1ve modified,altered,orrepairedinthearea that is applicable to certain Bombardier that no operator would accomplish subject to the requirements of this AD. Fqr Model DHG-8- 102, -103, -106, -201, those actions in the future if this AD airplanes that have been modified, altered, or

-202, -301, -311, and -315 series were not adopted. repaired so that the performance of the

airplanes was published in the Federal Regulatory Impact requirements of this AD is affected, the Register on JJly 31 , 1998 (63 FR 40852). owner/operator must request approval for an

- -----,..:-:::.-::::::= =-=~ :::-::,::-:c:irr:::-===-=-==-=-,~ ~ --..u:i.e..reguJ.ations adapted..b.er..eio..w· · ethod of com liance in Th at action P ropos O requ I re a one- not have su bstari ti al di rect effects oci.n U;th_e_ ..,,all.lcc"'o.urd~a;i.;n»:.5c<.Je.uw~it:¥hYcpl!..a!,/.rag~ ra~p~h!.-';(~b )~o~fsth~i'-s.A"Ds-.- ----

ti me inspection to detect chafing of States, on the relationship between the The request should include an assessment of electrical wires in the cable trough national government and the States, or the effect of the modification, alteration, or below the cabin floor; repair, if repair on the unsafe condition addressed by necessary; installation of additional tie- on the diStri bution of power and this AD; and, if the unsafe condition has not mounts and tie-wraps; and application responsibilities among the various been eliminated, the request should include of sealant to rivet heads. levels of government. Therefore, in specific proposed actions to address it.

accordance with Executive Order 12612, Compliance: Required as indicated, unless Comments it is determined that this final rule does accomplished previously.

Interested persons have been afforded not have sufficient federalism To prevent chafing of electrical wires, implications to warrant the preparation which could result in an uncommanded

------ n opportunity tg..p·aA~ fJ<iii~·-l'l--l.A-e--~0;:2a~ ~ e~r~a;.;:1s;.m;...;~-ssess;:;;,;:,;;m;.:;en; t,..!:.:.:..::~:.:.:.:..::.:.:_ -l'S:Ahy;1,1t~difloww+in-'oi!.faaAiu.en9i.ne..du, ... ri .... n"11g .... fJ"-lig"""b....,t, _ _____ _

making of this amendment. No For the reasons discussed above, 1 accomplish the following: commentsweresubmitted in response (a)Within 36monthsaftertheeffective to the proposal or the FAA's certify that this action (1) is not a date of this AD, perform a one-time visual determination of the cost to the public. " significant regulatory action" under inspection to detect chafing of electrical

Executive Order 12866; (2) is not a wires in the cable trough below the cabin Explanation of Change Made to This "significant rule" under DOT floor; install additional tie-mounts and tie-Final Rule Regulatory Policies and Procedures (44 wraps; and apply sealant to rivet heads

The FAA has revised the final rule to FR 11034, February 26, 1979); and (3) (reference Bombardier Modification 8/2705); wJII not have asignificanL~onQmic in accordance with Bombardier Service

reflect a charrge of th·emanufacturer's - Bull etin s.B. -a-:53-66; dated March 27, 1998. f d H ·11 d t B b d" impact, positive or negative, on a

namerom e av1 an o omar1er. lfanychafingisdetectedduringthe Conclusion substantial number of small entities inspection requi red by this paragraph, prior

under the criteria of the Regulatory to further flight, repair in accordance with The FAA has determined that air Flexi bi I ity Act. A final evaluation has the service bulletin .

safety and the public interest require the been prepared for this action and it is (b) An alternative method of compl iance or adoption of the rule with the change contained in the Rules Docket. A copy adjustment of the compliance time that previously described. The FAA has of it may be obtained from the Rules provides an acceptable level of safety may be

d t · edthatth· h ·11 ·th Docketatthelocationprovidedunder usedifapprovedbytheManager, NewYork e ermi n is c ange WI nei er Aircraft Certification Office (ACO), FAA,

increase the economic burden on any th e caption ADDRESSES. Engine and Propeller Directorate. Operators

operator nor increase the scope of this List of Subjects in 14 CFR Part 39 shall submit their requests through an AD. appropriate FAA Principal Maintenance

Air transportation , Aircraft, Aviation Inspector, who may add comments and then Cost Impact safety, Incorporation by reference, send it to the Manager, New York ACO.

The FAA estimates that 225 airplanes Safety. Note 2: Information concern ingthe

of U.S. registry wi II be affected by this Adoption of the Amendment existence of approved alternative methods of AD. . 1 compliancewiththisAD,ifany,maybe

For the 210 Model DHG-8-102, -103, Accordingly, pursuant to the obtained from the New York ACO.

106 201 d 202 . . 1 authoritydelegatedtomebythe (c)Specialflightpermitsmaybeissuedin - , - ,an - senesairpanes Admin istrator,theFederalAviation accordancewithsections21.197and21.199 affected, it wi II take approximately 70 Administration amends part 39 of the of the Federal Aviation Regulations (14 CFR workhoursperairplanetoaccomplish F 1

•• R 1 • (14 21 .197and21.199)tooperatetheairplane, to th · ed · at I b edera Av1at1on egu atlons CFR

e requ1 r actions, an average a or a location where the requirements of this'AD rate of $60 per work hour. Required part 39) as fol lows: can be accompl ished .

parts will be provided by the PART 39_AIRWORTHINESS (d) The actions shall be done in accordance manufacturer at no cost to the operators. DIRECTIVES with Bombardier Service Bulletin S.B. 8-53-Based on these figures, the cost impact 66, dated March 27, 1998. This incorporation of the required AD for these airplanes 1. The authority citation for part 39 by reference was approved by the Director of

on U.S. operators is estimated to be continues to read as follows: the Federal Regi ster in accordance wi th 5 U.S.C. 552(a) and 1 CFR part 51. Copies may

$882,000, or $4,200 per airplane. Authority: 49 U.S.C. 106(g), 40113, 44701. be obtained from Bombardier, Inc., For the 15 Model DHG-8-301 , -311 , Bombardier Regional Aircraft Division,

and -315 series airplanes affected , it §39.13 [Amended] Garratt Boulevard , Downsview, Ontario M3K

will take approximately 100 work hours 2. Section 39.13 is amended by 1Y5, Canada. Copies may be inspected at the per airplane to accomplish the required adding the following new ai rworthiness FAA, Transport Airplane Directorate, 1601 actions, at an average labor rate of $60 directive: Lind Avenue, SW., Renton, Washington; or at

Per work hour. Required parts will be the FAA, Engine and Propeller Directorate, 98-20--14 Bombardier, Inc. (Formerly de New York Aircraft Certification Office, 10

provided by the manufacturer at no cost Havill and, Inc.): Amendment 39-10781. ·Fifth Street, Third Floor, Valley Stream, New to the operators. Based on these figures, Docket 98-NM- 172- AD. York; or at the Office of the Federal Register,

the cost imp act of the required AD for Applicability: Model DHC-8-102, - 103, 800 North Capitol Street, NW., su ite 700, these airplanes on U.S. operators is - 106, - 201 , - 202, -301, -311, and - 315 seri es Washington, DC.

Federal Register/ Vol. 63, No. 183/ Tuesday, September 22, 1998/ Ru_les and Regulations

Note 3: The subject of this AD is addressed in Canadian airworthiness directive CF-98--08, dated March 26, 1998.

(e) This amendment becomes effective on October 27, 1998.

Issued in Renton, Washington , on September 14, 1998. Darrell M. Pederson, Acting Manager, Transport Airplane

· Directorate, Aircraft Certification Service. [FR Doc. 98--25119 Filed 9--21-98; 8:45 am]

50503