Here’s a question asked by
an AOPA member who contacted our aviation services staff through the
Question: On a recent IFR flight I experienced loss of RAIM capability on the GPS. I promptly notified ATC, and they requested a new equipment code. My aircraft has DME and a Mode C transponder, but I couldn’t remember the code! Where can I find that information?
Answer: In your case, the equipment code would have been slant alpha (/A). Refer to table 5-1-2 in the Aeronautical Information Manual for other aircraft equipment suffixes.