If the airplane has been operated so that any of its components have exceeded their maximum operational limits, check with the appropriate manufacturer.
The special inspections given in the following paragraphs, supplement the scheduled inspections as outlined in the Inspection Report, Table III-I or III-II, to include inspection of items which arerequired to be examined at intervals not compatible with airframe operating time or airframe inspection intervals. Typical of this types are:
a. Inspection is required because of special conditions or incidents that arise, and because of these conditions or incidents, an immediate inspection would require insuring further safe flight.
b. Inspection of airframe or components on a calendar basis.This type of inspection could often be accomplished during the nearest scheduled inspection.
c. Specific definitive inspection on engines based strictly upon engine operating time.
d. Those inspections not completely covered in other sections of this manual, but outlined in the Inspection Report and must be explained in more detail to give a clearer and complete inspection.
The Programmed Maintenance was designed to permit the utilization of the aircraft, by scheduling inspections through the use of a planned inspection schedule. Programmed Maintenance schedules are available from Service Sales.
INSPECTION OF EXHAUST SYSTEM
The entire exhaust system, including heat exchange shroud, muffler, muffler baffles, stacks and all exhaust connections must be rigidlyinspected at each 100 hour inspection. The possibility of exhaust system failure increases with use. It is recommended that the system be checked more carefully as the number of hours increase, therefore inspection at the 700 hour period, that the exhaust system has been in use would be more critical than ones in the 100 hour period. The system should also be checked carefully before winteroperation when the cabin heat will be in use.
NOTE: When installing an exhaust clamp having an alignment pin be certain that the pin engages the mating holes in exhaust pipe and muffler to prevent separation of components.
NOTE: It is recommended that all PA-28 airplanes be fitted with a new muffler at or near the 1000 hour period of which the muffler has been used.
INSPECTION OF CONTROL WHEELSa. This inspection should be accomplished at the next 100 hour or annual inspection and repeated at each 100 hour or annual inspection thereafter.
b. It is required to detect and replace any cracked control wheels.
c. Inspect the front, bottom and back of the control wheels using an ordinary (3x) magnifying glass and light.
Do not confuse any surface irregularities or mold marks withactual cracks.
No solvents or dye penetrant should be used to perform this inspection.
d. Any control wheel assemblies which are found defective should be replaced immediately. Refer to PA-28 Parts Catalog for applicable part numbers.
ELEVATOR CONTROL CABLE INSPECTION
Special care should be taken to inspect elevator control cables beneath aft baggage compartment floor. Add accesspanels per instructions in Paragraphs 4-57a and 4-79 to ease this inspection. Flap Control Cable Attachment Bolt Inspection
INSPECTION OF FLAP CONTROL CABLE ATTACHMENT BOLT
a. This inspection should be accomplished at each 100 hours time in service.
b. The inspection is required to detect any possible wear and replacement of attachment bolt, should evidence of wear be detected.
c. Remove theroyalite flap or flap/trim cover.
d. On aircraft having the flap handle only, proceed as follows:
1. Remove flap handle mounting bracket attachment bolts.
2. Raise flap handle and bracket assembly to gain access to the control cable attachment bolt.
e. On aircraft having the flap handle and trim wheel mounted together, proceed as follows:
1. Loosen the trim wheel attachment bolt.