Kevin wrote: > Correct, the 337 does not mean that a mod was completed it > is only the approval to do it. You should always get your 337's > approved before doing the work. Where this would bite > someone would be if some of the log books were missing. In > that case it would be impossible to prove that the mod was not > done or was done then undone.
Then there's the question of what is REQUIRED to convert the aircraft to the higher model so it may LEGALLY be flown with the higher gross weight. There's some reason to think that getting the form 337 approved and even doing the modification is not sufficient for the legal model change. It may be NECESSARY to have gotten the airworthiness certificate upgraded, reflecting the new model, before the change is legal and it's legal to fly at the higher gross weight. If that is the case, are planes whose airworthiness certificates were never changed ALL still eligible for LSA? How about if the owner THOUGHT the change was done and flew it for years as a D but never finished the process legally? Is there a way to get this determined finally and officially short of waiting till AFTER an incident and mucking around with some poor schmuck footing the entire legal bill to prove the case in court? Or, is it best to sit down, shut up and keep mum? I sure don't know. Ed
