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Rework instructions for alignment of landing gear wheels.
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The round upper and lower tail brace tie rod assemblies, part numbers 10555-02 and 10556-02, respectively, have been approved to replace the upper and lower streamline tail brace tie rod assemblies in the listed aircraft.
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Reports of cracks in the cast aluminum aileron bellcranks due to excessively tightening of the bolt which attaches the aileron push rod to the bellcrank.
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Remedy for manifold pressure gauges installed in 1951 model airplanes giving unsatisfactory service.
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Replace the aluminum front spar wing-to-fuselage attachment fittings with steel forgings.
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The following installations have been FAA approved in the field. The party securing the approval is also listed.
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Inspecting the engine mount to determine if there is any evidence of fatigue cracks in the vicinity of the welds at both the firewall and the engine attachment points.
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General specifications for Piper Cub Super Cruiser J5C-100 (commercial models).
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Revising the present front and rear wing lift struts.
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Due to a number of reported failures of single strand .032" safety wire used on control system turnbuckles, it is considered necessary to replace the safety wire with single strand .040" brass or copper wire.