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In devising a system of identification for fixed pitch propellers, Sensenich Corporation worked out a code system which not only identifies the propellers, but also describes them.
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Inspection and reworking the turnbuckles to preclude the possibility of fork end failures in the control system.
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Replacing Facet induction air filters (manufactured by the Purolator Products Company) due to cracking, splitting, crumbling, and deterioration.
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Steps to prevent wing fabric loosening along the upper surface of the front and rear spars in the area of the fuel tank causing a spoiler action.
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Replacement of aluminum fittings between carburetor and gascolator with steel or brass fittings, verification of gascolator braces, and installation of new gascolator.
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Per Lycoming Division of Avco Corporation, it is permissible to use a torque value of 40 inch pounds to provide adequate tightness to maintain proper engine support in lieu of the linear dimension as previously specified.
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To prevent failure of the rear fuselage-wing attachment fitting, reinforcement is to be accomplished by either of the following methods.
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To eliminate interference and failure of the turnbuckle forks at the attachment points of the two elevator control cables to the horn located on the bottom of the control column, confirm that AN 161-16RS turnbuckle forks have been replaced by AN 160-16S forks.
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Eliminate combustible material and possible ignition sources from the area aft of the firewall, underneath the forward cabin floor, to preclude possibility of inflight fires.
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Undesirable vibration occasionally occurs in the Ercoupe airplane and the cause has been traced to the nose landing gear.