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Changes have been effected to prevent further failures in the elevator trim unit handle crank shaft and worm wheel shaft.
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Modification to increase the strength of the aileron balance weight bracket to beam attachment.
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Partial or almost complete loss of rudder control of one or both rudders due to partial failure of the rudder horn attachments.
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Supplement to Ercoupe Service Bulletin No. 13 Change of Aileron Control Stop.
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Means of preventing the hinge pins from vibrating loose and moving forward into the propeller.
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Failures, occurring as cracks in the center section belly skin at the rearmost rivet attachment in the center section belly skin outer stiffeners (415-13056 L/R), have been reported.
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Interference of the baffle with the filter element within the carburetor filter assembly, resulting in a jamming of the throttle and a lack of proper carburetor heat control, has been reported.
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Electrolyte leaking from the battery box will cause corrosion of structural members of the aircraft and deterioration of the baggage compartment. This bulletin provides instructions for modifying the battery box.
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Procedure for inspection of the wing center section to establish the condition of the center section structure.
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Steps to provide a more positive locking action on the aileron control stop.