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Information regarding piston pin plug replacement during engine overhaul.
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Inspection of aileron hinge reinforcing brackets to determine the type of material. All aluminum brackets are to be removed and replaced with steel brackets.
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Inspection of control cables for continual fraying and failure in the control column assembly.
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Reports of the wing tank fuel shut off valve, located inline prior to the fuel pump, being left in the “Closed” position during engine run-up and flight, resulting in engine ceasing to function properly upon fuel starvation.
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Required visual or tactile examination of the wing tank fuel shut off valve and the main fuel shut off valve to insure that both valves are open prior to every flight.
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This letter announces the approval of the eight gallon auxiliary fuel tank installation in the PA-22 "135" and PA-22 "150" airplanes, serials 22-534 and up.
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Inspection of the stabilizer leading edge attachment to the fuselage should be made for fatigue cracks.
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General specifications for Piper Cub Coupe J4E-75 (commercial models).
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Phone numbers for the Four Corners area weather reporting stations.
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Downloadable paint scheme sheet for Piper PA-12.