Applies to Ercoupe Models 415C (Which Incorporate Adjustable Elevator Trim Tabs), 415CD, and 415D
To be accomplished by September 1, 1950.
To preclude the possibility of elevator flutter in the event the elevator trim tab control wire fails, elevator trim
tab stop and spring, Erco P/N 415-SK-287 and 415-22035 should be installed.
(Engineering and Research Corp. Ercoupe Service Memorandum No. 55 and Service Memorandum No.
55A" cover this same subject.)