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A condition exists where the flexible coupling connecting the vacuum pump may fail prematurely, causing a loss of vacuum/pressure with the resultant loss of vacuum/pressure instruments and other appliances.
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Instructions for correcting possible leakage of acid into the battery case of ARTEX 110-4 ELT battery packs.
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Evidence of premature internal corrosion in the steel tube structure of the vertical fin and the five tail surfaces (stabilizers, elevators, and rudder).
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Installing the Name Plate Installation Kit on airplanes with improperly installed serial number data plates.
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The compliance time for inspection of lift strut assemblies is changed from every 5 years to every 12 months.
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Installing an improved forward fuel header tank with thicker walls and welded seals, which provides greater resistance to impact rupture in the event of an accident.
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The use of automotive type gasoline in General Aviation aircraft is believed to be a contributing factor in numerous accident investigation reports.
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Corrosion between the aluminum terminal and aluminum wire at the battery positive post, resulting in overheating of the wire due to high electrical resistance.
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Installation of a placard on the Pilot's instrument panel warning against using improper procedures in applying the parking brake.
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Exhaust muffler inspection and modification, Piper Part Number 12433-00, 12433-14, 12232-00.