blueskyMD
Pre-takeoff checklist
removed during the upgrade for ADS-B it was in working condition but avionics guy told me that it will not be compatible with GDL88 which I was planning to install. I flew with this transponder for about 8 years without any complain from ATC. It should work fine except as I mentioned may not be compatible with ADS B upgrade. Mounting tray included see the pictures. Asking $450---OBO
