Originally Posted by
wrench1
You may want to readdress that plan. The individual owners of an S-LSA in the US will not be able to install your prop on their aircraft unless the manufacturer provides the acceptable data as it is considered a major alteration. Now if the owner elects to convert their S-LSA to an E-LSA in order to install your prop then it would not need the mfgr. data, however, they may run across a different problem similar to what an amateur-built (E/AB) owner would face installing your prop. And at the E/AB level a new prop install with no engine history behind it, will probably push the aircraft major change required Phase 1 flight testing beyond the typical 5 hours and possibly out to the 25-40 hour requirement. Something to think about.
Alright- I am trying to wrap my head around everything real quick.. I do not personally handle certification so I am asking the guys here and getting an information overload.. Let me see if I can correctly regurgitate what I am being told:
We are ASTM approved (approved? certified? compliant? one of those words) for Rotax engines. As I understand it, under the new rules, a manufacturer can take a look at our data and decide that the propeller meets their airworthiness requirements, in which case no further testing is required. They may, however, as you said, wish to see performance data specific to their aircraft, in which case flight testing would have to be done. Full disclosure- I am the "marketing guy" here, and an American, and I am trying my best to understand what my very technically minded German colleagues are explaining to me (in
German!), and then pass that along here.. there is bound to be something lost in translation, and for that I apologize in advance. I have also passed your question to our American partner (who has been in the aviation business for longer than I have been alive) and as soon as I hear back from him, I will hopefully have something smarter to say : )