Skip, What we need is a letter from an appropriate FAA official, saying: Certain Ercoupes are eligible as LSA compliant 415-C and 415-CD models and also as a higher gross weight model, for example the 415-D. If a review of the records shows that the airworthiness certificate was never changed to show conversion to any higher gross weight model, then the gross weight was never changed. Though, in some cases, a form 337 can be found on file showing conversion to a higher gross weight model, along with logbook entries to that effect, these do not constitute legal conversion to a higher gross weight model. Only the inspection and issuance of a new airworthiness certificate can make this change. Without an airworthiness certificate change, any registration as a higher gross weight model was erroneous and has no effect upon the gross weight of the aircraft. Therefore, an Ercoupe which has never had its airworthiness certificate changed to be a higher gross weight model meets and has always met the requirements stated in Part 1 Definitions and Abbreviations, §1.1 General definitions Light-sport aircraft. <signed appropriately responsible FAA official> Have you had any progress in getting something definitive from the FAA? Ed
