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Inspecting the wing center section for evidence of corrosion through the installation of inspection openings and use use of a specified scope and light source.
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Instructions to preclude failure of brittle bolts and the danger of the nose wheel turning crosswise during landing on aircraft incorporating Electrol hose gear with aluminum scissors.
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Listed airplanes may contain a control column shaft, P/N 415-52129, which is defective at its lower bearing fitting.
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Flexing of the lower aileron skin has resulted in fatigue cracks in the beam in the balance weight area.
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Cracks have occurred in the belly skin at the rearmost rivet attaching the center section belly skin outer stiffeners to the belly skin.
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Inspect the fuel pump lines near the pump for failure and leakage due to chafing, on aircraft which incorporate fuel pumps with a metal filter bowl.
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Remove the tires and inspect the wheel flanges for fatigue cracks.
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Inspect all seaplanes to determine if the bulkhead reinforcements of Luscombe Drawing 48701 are presently installed at fuselage Station 4.
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Inspecting the wing lift struts for corrosion and forks for cracks, and making necessary repairs.
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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.