Piper Navajo Chieftain PA-31-350 Service Manual page 113

NAVAJO CHIEFTAIN SERVICE MANUAL
TABLE III-I. INSPECTION REPORT
NOTES (cont)
27. Inspect emergency hydraulic hand pump handle assembly for signs of corrosion at attachment point.
Replace handle assembly if any evidence of corrosion is present.
28. Refer to latest revision of Piper Service Letter 789 for inspection of elevator bellcrank and control rod.
29. Refer to latest revision of Piper Service Bulletin 687 for stabilizer/ elevator outboard hinge inspection.
30. Pressure check all fluid hoses in fuselage and wing areas after 10 years time-in-service. Visually check
for leaks. Hoses that pass inspection may remain in service and checked thereafter each five years time-
in-service.
31. These inspections apply to Dukes Systems only S/N 31-5001 to 31-7852171 inclusive. (Refer to latest
revision of Piper Service Bulletin 739.)
32. If severe buckling, cracks or loose rivets are noted, remove fire shield for inspection and repair.
33. Inspect fuel cells every 2 years. (Refer to section IX.)
34. Refer to latest revision of Piper Service Bulletin 591 for inspection of Goodyear BTC-39 fuel cells and to
comply with FAA Airworthiness Directive 78-05-06.
35. Replace fuel tank vent line flexible connections as required, or every five years, whichever comes first.
36. Only use brass screws to install the access plate that covers the flux detector on the top outboard section of
the left wing on airplanes equipped with remote compass systems. Steel screws cause erratic compass read-
ings. Also use a brass, or other non-magnetic screwdriver, when making adjustments to compass system.
37. Refer to latest revision of Piper Service Bulletin 700 for inspection of nose wheel.
38. Comply with latest revision of Piper Service Bulletin 629.
39-.lnitial inspection required after first 1,000 hours time-in-service; repetitive inspection required each 100
hours time-in-service. Inspection also required whenever landing gear is operated at speeds above maximum
landing gear operating speed (VLO). Refer to Piper Service Bulletin No. 845.
40. Replace landing gear selector cable at 4,000 hours time-in-service or 10 years, whichever comes first.
41. Refer to flight manual supplement for preflight and flight check, for intended function in all modes.
42. Refer to latest revision of Piper VSP 99 or latest revision of Aeroquip Service Bulletin No. 001R1.
43. Inspect all rod end bearings for freedom of ball movement. Use a 10X magnifying glass to check thread
end of bearing for cracks and damage. Replace bearing if ball is frozen or hard to move.
44. Inspect condition of cowl fastener locked indicator stripes. Touch-up or restore as necessary. Refer to
Service Manual, Section Vm.
45. Remove sludge from propeller and crankshaft whenever propeller is removed from engine.
46. After first 6000 hours time-in-service, inspect aft edge and accessible top surface of splice plate for one
inch each side of centerline bend in plate. If accessible, also inspect forward edge and top surface of
splice plate in same manner. Using a flashlight and mirror, conduct a close visual inspection of splice
plate for cracks. Afterward, inspect each 100 hours time-in-service.
47. Each 300 hours time-in-service, inspect oxygen low and high pressure lines for condition. Inspect
pressure regulator, pressure gauge, cabin outlets, and external charging valve for condition and operation.
48. Each 100 hours time-in-service, remove aileron and inspect area beneath inboard hinge on aileron spar
for cracks. Replace at each 1000 hours time-in-service. (Refer to latest revision of Piper Service Bulletin
No. 974.)
Revised: 3/31/94
Interim Revision: 12/30/94
INSPECTION
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