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Instructions to prevent possible leakage of carbon monoxide into the cabin heater system in airplanes utilizing Avcon Industries, Inc., kits with defective mufflers.
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Required inspection of the rear seat back hinge areas for cracking and excessive elongation of the rear seat hinge bolt hole and replacement of the rear seat frame if necessary.
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Substitution of 1101879 Generator and 118384 Regulator for 1101876 Generator and Regulator.
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Installing new inspection holes, modifying the wing tip fairings, and inspecting the wing spars for intergranular corrosion.
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Correction to the PA-12 Weight and Balance Form regarding the propeller installation arm.
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The compliance time for inspection of lift strut assemblies is changed from every 5 years to every 12 months.
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How to prevent an inflight electrical system failure, smoke in the cockpit, and/or fire in the wire bundle behind the instrument panel.
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The weight and balance forms which were issued with all Model PA-11-90 airplanes, prior to serial number 11-993, are not correct in so far as loading and C. G. limits specified are concerned.
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Due to recurring failures of the control cables, all cables should be carefully inspected at each section which passes either over a pulley or through a fairlead.
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Extreme surface corrosion has been found to exist inside the fuselage spar carry through structures of Luscombe Series 8 aircraft, particularly in those airplanes located near coastal areas.