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Inspect elevator cables for signs of fraying; replace pulleys with ones of larger radius.
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Safety measure to prevent possible icing of the lower end of the crankcase breather tube.
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Eliminating the possibilities of a rudder bellcrank seizure caused by the bakelite bushing that has expanded due to moisture within the bushing.
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Instance of a crack developing in service across a jury strut fitting on a lift strut.
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Inspect for fatigue failure in the bulkhead to which the rear landing gear strut is bolted.
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Modification to prevent the tailwheel from hitting the rudder.
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Modifications to prevent fuel line failures aft of the firewall.
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Steps to increase the strength of the rudder at the control horn attachment.
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Undetected corrosion in the aileron pushrod tube may lead to failure of the tube, loss of control of the aileron and possible loss of control of the aircraft.
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Visual inspection of the throttle cable and housing for fatigue and possible cracking.