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To preclude the possibility of in-flight fires, the following inspection and rework is necessary to eliminate combustible material and possible ignition sources from the area aft of the firewall underneath the forward cabin floor.
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Replacing aluminum aileron hinge reinforcing bracket with one made of steel, part number 10931-02.
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How to fix difficulties with the fabric where it attaches to the fuselage under the windshield top and/or directly over the rear edge of the windshield top attachment channel.
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How to fix difficulties with the fabric where it attaches to the fuselage under the windshield top and/or directly over the rear edge of the windshield top attachment channel.
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Reported cases of failure of a tail brace wire (10074-02 or 10074-03) on the above listed airplanes.
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Reports of the vacuum pump splined coupling on Airborne Mechanisms Vacuum Pumps Models 113A5 and 113A8 may fail prematurely as a result of over-curing.
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Reports of collapsed wing mounted fuel tanks due to inadequate venting of the tank.
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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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Compromised structural integrity of the fuselage due to excessive rust and corrosion between steel tubing and preformed sheet steel material.
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The possibility exists where the airplane's gyro vacuum/pressure system may become contaminated by loose particles originating from the air filter element.