Piper PA-24 Comanche, Service Manual

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PIPER COMANCHE SERVICE MANUAL
04/01/09 III - INSPECTION
1D29
3-8.
Special Inspections
WARNING: FAILURE TO CONSULT APPLICABLE VENDOR PUBLICATION(S), WHEN
SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED IN PIPER
AIRCRAFT,
MAY RENDER THE AIRCRAFT UNAIRWORTHY. (SEE
INTRODUCTION - SUPPLEMENTARY PUBLICATIONS.)
A. Requirements
The following inspections are required in addition to those listed in Table III-I. These inspections
are required at intervals of:
Flight hours;
Calendar Year; or
the specific operation being conducted or the environment being operated in.
Unless otherwise indicated, these inspections are to be repeated at each occurrence of the specified
interval. Note that the items listed herein are guidelines based on past operating experience. Each
operator should closely monitor his own unique operating conditions/environment and react
accordingly to keep his aircraft airworthy.
NOTE: A log book entry should be made upon completion of any inspections.
(1) Per Flight Hour
(a)
Each 25 Hours
1 For engines using only a pressure screen oil filtration system (i.e., not equipped
with any full flow cartridge filter),
change the engine oil and clean the screens
each 25 hours of engine operation.
2 In PA-24 and PA-24-250 S/N’s 24-1 thru 24-102, for airplanes which have not
installed replacement muffler part number 21239-06:
inspect the muffler, in the
area of the tailpipe take-off, for cracks every 25 hours time-in-service
(b)
Each 400 Hours
1 At every 400 hours of engine operation, remove the rocker box covers and
check for freedom of valve rockers when valves are closed. Look for evidence
of abnormal wear or broken parts in the area of the valve tips, valve keepers,
springs, and spring seats. If any indications are found, the cylinder and all of its
components must be removed (including the piston and connecting rod
assembly) and inspected for further damage. Replace any parts that do not
conform with limits shown in the latest revision for Lycoming Service Table of
Limits SSP1776.
2 For airplanes equipped with fuel selector valves P/N’s 11383-000/-002/-003/-
004 or with Piper Kit No. 764-295 installed (i.e., service replacement fuel
selector valve P/N 77413-002),
each 400 hours time-in-service, annually, or
whenever valve is difficult to rotate, whichever comes first, service the fuel
selector valve per paragraph 8-14a.