AXP Series Transponders
            1. AXP340 and AXP322 ICAO Filing Codes
            2. AXP340 Altitude Reporting Stuck At Field Elevation
            3. AXP322 IFD540/440 transitioning to "on" instead of "standby"
            4. AXP340 or AXP322 configuration when an ADS-B reciever is installed
            5. AXP340 configuration when an ADS-B reciever is installed