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Inspection of front stabilizer fittings for cracks.
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Information on stack exhaust systems on the older Model 8 airplanes supplying marginal carburetor heat under severe or unusual atmospheric conditions. Information on Harding fuel selector valves presenting some operational and service difficulties.
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Rework instructions for alignment of landing gear wheels.
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Installation of battery cable clip to preclude possible short circuiting of the battery cable.
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Rework required to permit interchangeability of new type (square tip) stabilizer with old elevators.
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Changes for the purposes of flight safety enhancement regarding clevis pins in the flight control system.
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Recommendations to insure proper cooling of the engine.
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Installation of rudder return springs to improve the directional stability characteristics of the airplane.
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Checking the attachment of the rudder control arm on the torque tubes.
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Prevention of cracks developing in the side flanges of the stabilizer attaching bracket.