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Inspect the two bolts attaching the horizontal stabilizer to the fin post for tightness and proper length.
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Refers to the various Airplane Flight Manuals which are required equipment for landplane, skiplane, and seaplane, and must be carried in the aircraft at all times.
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Inspect for fatigue cracks in the elevator spar web at the hinges.
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Replacing U.S. Rubber Co. flexible ducts installed in the carburetor hot air system with P-208-S duct or P-208 duct coated with neoprene.
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Instructions to prevent the entry of fire and fumes into the cabin compartment in the event of a powerplant fire.
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How to inspect the stack "Y" junction for evidence of failure or deterioration.
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To prevent the oleo strut assembly from separating in flight, replace the fiber piston with aluminum pistons.
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Accidents have occurred in model 11AC and S11AC aircraft due to misuse of the fuel transfer system. These accidents have been caused by pilots attempting to transfer fuel while taking off or in a climb attitude.
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Prevent possible resonant vibratory conditions with McCauley Model 1A200/HFA fixed pitch propellers installed on Lycoming 0-360-C2A, or -C2E type engines.
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Steps to detect evidence of fatigue cracks and/or distortion of rib flanges, and required repairs if damage is found.