100 Hour Engine Mount Special Inspection - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

1.

100 Hour Engine Mount Special Inspection

NOTE: Installation of a current production engine mount, P/N 102460-036, will relieve this repetitive
inspection requirement.
In S/N's 4697001 through 4697240 and 4697242 through 4697244 with engine mount P/N 102460-002
installed, each 100 hours time-in-service:
A. Remove the nose gear hydraulic actuator and the nose gear assembly from the engine mount per
32-20-00. Clean the engine mount actuator attach feet area including tube welds as shown in
Figure 1, Sheet 1. Clean the inboard sides of the mount within two (2) inches of the nose gear
attach points as shown in Figure 1, Sheet 2.
B. Remove protective coating (paint or Dinitrol AV8) from the inspection areas.
C. Inspect the welded areas of the nose gear actuator attach feet (see Figure 1, Sheet 1) for cracks:
(1) First visually inspect the engine mount welds and the tubes as shown in Figure 1 then;
(2) Perform a 'liquid penetrant inspection' of the entire length of each weld on the attach feet. A
mirror will be required to inspect the upper surface of the attach feet and associated tubes for
cracks per the latest revision of AC 43.13-1.
D. If no cracks are found:
(1) The engine mount can continue in service until the next 100 hour inspection.
(2) Clean the inspection areas and apply Dinitrol AV8 (P/N 89500-800) to the areas where the
protective coating was previously removed.
(3) Reinstall the nose gear assembly and nose gear actuator per Nose Gear Assembly -
Installation, 32-20-00 and Nose Gear Actuator Assembly - Installation, 32-30-00.
(4) Make an appropriate logbook entry documenting this inspection.
E. If cracks are found on the engine mount:
(1) The entire engine mount assembly must be replaced with a current production engine mount,
P/N 102460-036, per Piper Kit No. 767-515 before further flight.
(2) See Engine - Installation, 71-00-00, and Engine Mount - Installation, below.
(3) Reinstall the nose gear assembly and nose gear actuator per Nose Gear Assembly -
Installation, 32-20-00 and Nose Gear Actuator Assembly - Installation, 32-30-00.
(4) Make an appropriate logbook entry documenting the new engine mount installation.
7E9
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
MOUNTS
71-20-00
Apr 15/07
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