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Ed Burkhart Wrote:
Aircraft Specification A-787 explicitly allows all the postwar 415-C and 415-CD models to be converted to 415-D and be allowed the 1400 lb. gross weight limit. Many have been converted but whether they were done “officially” is open to debate since many of these never got a new airworthiness certificate.
The FAA CD has an approved 337 dated 6/4/77 that states "Up graded A/C N-93932 Ercoupe 415C to 415D model by authority of Skyport Aircoupe Service & Ercoupe Service Memorandum SMK-1, SMK48, SMK46 & SMK-3XX"
The latest (7/17/56) Airworthiness Certificate in the file has the ship listed as a 415-C. So it appears that there was not a new airworthiness certificate issued after the modification.
Where does that leave an pilot who needs to operate the ship as a LSA? The C model is OK, but the D has a gross weight that puts it outside the LSA limits.
Dan Brown
Annapolis, MD
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