Quick question. I've spent a few minutes searching the web, but didn't come up with a definitive answer on the requirement date for Mode S transponders, especially as it pertains to Experimentals. I did find reference to aircraft having mode A or C installed being allowed to retain them indefinitely until they were irreparable (see link below). Just wondering, what's the latest ruling on this, and where do we appear to be headed? I'm building a new panel for the KR2, and need to know if I should cut a hole for my current Terra TR-250, or put a 2.25" hole in it for the advent of a new Mode S? [I realize the Mode S is a good thing when considering ADSB-out]. The link I'm referring to is at http://www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/info/all_infos/media/2011/InFO11018.pdf , although it is dated. As luck would have it, my transponder was manufactured before 1990, which may be relevant to the link above. I'm considering a cover plate that would allow me to go either way, but I'd rather just do it once. Anybody know which way the Mode S winds are blowing now?
Thanks, Mark Langford ML at N56ML.com website at http://www.N56ML.com --------------------------------------------------------
