Print Date: Sat Mar 28 14:08:59 CST 2015 MODEL 172 MAINTENANCE MANUAL (Rev 20)5-12-20 (Rev 17)

© 2015 Cessna Aircraft CompanyRetain printed data for historical reference only. For future maintenance, use only current data. Page 1

INSPECTION OPERATION 20

Date: _______________

Registration Number: _______________

Serial Number: _______________

Total Time: _______________

1. Description

A. Operation 20 gives a list of item(s), which are completed every year.

B. Inspection items are given in the order of the zone in which the inspection is to be completed. Ageneral description of the inspection required and the Item Code Number for cross-reference tosection 5-10-01 are shown. Frequently, the tasks define more specifically the scope and extent ofeach required inspection. These tasks are printed in the individual chapters of this manual.

C. The right portion of each page gives space for the mechanic's and inspector's initials and remarks.A copy of these pages can be used as a checklist when these inspections are completed.

2. General Inspection Criteria

A. During each of the specified inspection tasks in this section, more general inspections of theadjacent areas must be done while access is available. These general inspections are used to findapparent conditions which can need more maintenance.

B. If a component or system is changed after a required task has been completed, then that specifiedtask must be done again to make sure it is correct before the system or component is returnedto service.

C. Do a preflight inspection after these inspections are completed to make sure all the required itemsare correctly serviced. Refer to the Pilot's Operating Handbook and FAA Approved Airplane FlightManual.

ITEM CODENUMBER TASK ZONE MECH IN-

SP REMARKS

251102 AMSAFE Aviation Inflatable Restraint (AAIR) - Examinethe restraint for dirt, frayed edges, unserviceable stitch-ing, loose connections, and other wear. Refer to Chap-ter 25, Inflatable Restraint System - Maintenance Prac-tices, and do the Inflatable Restraint System Inspectionand the Inflatable Restraint System Adjustment/Test.

211

243005 Standby Battery - Complete the Standby Battery Capac-ity Test. Refer to Chapter 24, Standby Battery - Mainte-nance Practices.

220

246101 Essential and Crossfeed Bus Diodes - Complete a checkfor proper operation. Complete the Essential and Cross-feed Bus Diode Inspection. Refer to Chapter 24, Essen-tial and Crossfeed Bus Diodes - Maintenance Practices.

224

Print Date: Sat Mar 28 14:08:59 CST 2015 MODEL 172 MAINTENANCE MANUAL (Rev 20)5-12-20 (Rev 17)

© 2015 Cessna Aircraft CompanyRetain printed data for historical reference only. For future maintenance, use only current data. Page 2

ITEM CODENUMBER TASK ZONE MECH IN-

SP REMARKS

110000 Interior Placards, Exterior Placards, Decals, Markingsand Identification Plates - Examine for correct installationand legibility. Refer to Chapter 11 Placards and Markings- Inspection/Check.

All

*** End of Operation 20 Inspection Items ***