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This memorandum is a supplement to Memorandum #49, covering the inspection of control column cables.
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Increasing the strength of the rudder at the control horn attachment.
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Inspect the lift strut clevis bolts for evidence of abuse. If such evidence is noted, the bolts shall be replaced.
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Aluminum bellcrank castings have been found with cracks across the ears of the forked end.
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Examine immediately to ascertain that the fuel strainer is properly installed.
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Installation of safety belt extension on the front seat belt to eliminate deterioration due to rear seat heater damage and chafing.
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The purpose of this bulletin is to eliminate 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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To eliminate the need for continuous re-oiling of the bellcrank as required in Ercoupe Service Memo No. 63, it is recommended that the assembly be reworked.
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Checking the attachment of the rudder control arm on the torque tubes.
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Prevention of cracks developing in the side flanges of the stabilizer attaching bracket.