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Method of effecting engine change for increased horsepower.
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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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Materials list and instructions for repairing damaged Pliocel fuel cells. Includes procedures for both temporary and permanent repairs.
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Reinforcing the rudder horn to prevent the rudder from breaking loose during takeoff.
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Recommended repair for fuselage skin cracks at rear wing spar.
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Inspection of front stabilizer fittings for cracks.
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Heat output of the heaters provided with the single opening exhaust system can be increased by incorporating the following changes.
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Instructions for adding extension elbows to the mufflers of affected aircraft in order that their exhaust outlets be at least nine inches from their respective center lines.
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Safety measure to prevent possible icing of the lower end of the crankcase breather tube.
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Inspect elevator cables for signs of fraying; replace pulleys with ones of larger radius.