The transponder and tray are delivered mated. The radio and tray are delivered mated. The radio instructions mention a 3/32 hex driver to seperate the radio and tray. Nothing mentioned for the transponder but assume it is Garmin so a 3/32 should work. No joy, didn't find an enclosed driver but have several so no problem? Seperated the radio from its tray with no problem. After working 2 hours trying to seperate the transponder from its tray I capitulated and suffered the agony of defeat. Tried to call SteinAir a couple of times but no response so they must be at a fly-in. Called Garmin and talked to their GTX Field Support. They didn't have a solution for my problem but gave me the phone numbers for 2 service Centers in the DFW Area. Avionics 1st is about 15 mikes from where I am building so called them and got a response to "come on down". I presented my unmateable transponder and tray to Lloyd feeling very powerfull with my impossible diagnosis. He calmly pulled out a secret weapon and seperated the transponder and tray in a nano-sec. I said that looks like a hex driver to me but it had a balldriver hex key which allows entry into the receiver at up to a 25 degree angle. Don't know the complete answer but the parts in the locking device get out of alignment enough that a blunt end hex will not work. Hopes this helps 1 new builder save 4 hours of fustration, phone calls and driving.
Rain continues so may convert to an amphiban,
Bob Kibby
Rain continues so may convert to an amphiban,
Bob Kibby