PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
07/15/06
III - INSPECTION
4F3
Figure 3-11. Main Landing Gear Torque Link Greaser Bolt Inspection
(16) WING SPAR INSPECTION (PA-32-260 AND PA-32-300 ONLY)
WARNING: FAILURE TO FULLY COMPLY WITH THIS INSPECTION COULD
SERIOUSLY AFFECT THE STRUCTURAL INTEGRITY; SAFETY AND
AIRWORTHINESS OF THE AIRCRAFT.
(a) Background
On March 30, 1987, a PA-28 engaged in pipeline patrol operations suffered an inflight
wing separation resulting in a fatal accident. Investigation revealed the wing failure was
due to propagation of a fatigue crack, which originated in the wing lower main spar cap.
Based on more than five hundred (500) inspections of PA-28 and PA-32 airplanes with
more than 5000 hours total time-in-service, and extensive wing fatigue and fracture
analysis by Piper, the following inspection requirements have been developed.
NOTE: In the course of the inspections cited above, only two (2) negative findings were
reported on a pair of PA-32’s operating in a severe environment and with
considerable damage histories. Piper understands that the majority of aircraft are,
have been, and will continue to be operated well within the aircraft’s design
parameters during all of their operational life. HOWEVER, Piper also realizes
that some small number of aircraft engage in operations which are defined herein
as “severe” or “extreme” and those airplanes will require more frequent wing
removal and inspection.
Summary of Contents for Cherokee LANCE
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