I am no expert, but it is my understanding if the plane has ever been converted to a D model, it can NEVER qualify for LSA. I know this by experience, since I almost bought a D model that still was registered by the FAA as a 415-C. Probably no big deal, unless the 337 ever got filed or noticed by the FAA. Even the data plate said it was a C. But, the W&B showed 1400 gross wt. *Take care, and buyer beware. Gary
