In any case, if the form 337 is submitted for installing a non-TSO instrument or radio AND the FAA approves it, is there anyone who says it is not a valid installation?
So, even for exotic things, it comes down to FSDO approval. Fill out the paperwork and submit it. If it gets approved, then buy and install the gadget. And, then there are these considerations: http://edburkhead.com/Ercoupe/radio_tso_requirement.htm http://edburkhead.com/Ercoupe/TSO_Instrument_Requirement.htm Ed Ed Burkhead http://edburkhead/Ercoupe/index.htm ed -at- edburkh???ead . com (change -at- to @ and remove ??? and spaces)
