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Instructions for the installation of an additional support plate to strengthen the attachment mechanism.
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A recent fuel tank collapse was attributed to inadequate venting, caused by obstruction of the cap vent holes installed per Piper Service Bulletin No. 522.
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Reports of collapsed wing mounted fuel tanks due to inadequate venting of the tank.
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Instructions and material to reroute the rudder control cables to prevent cable contact with the adjacent fuselage frame tubes.
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Instructions to inspect the fuel tank filler caps for presence of a vent hole in the cap dome.
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Checking fuel selector valve for ease of rotation and instructions for lubricating.
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A recent survey of PA-20 and PA-22 aircraft has revealed that a certain number of these airplanes are operating with the strainer to carburetor flexible fuel line in a deteriorated condition.
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Instructions for an inspection of the vacuum pump adapter drive assembly.
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Instructions for compliance with Marvel-Schebler Division Bulletin No. A1-69.
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The flight manual supplement titled "Supplement No. 2 to aircraft flight manual dated October 23, 1952" concerning the installation of the optional auxiliary fuel tank on affected model aircraft may contain erroneous information.