tailBeaconX aviation surveillance device

The uAvionix tailBeaconX is a TSO-certified ADS-B Out transponder from uAvionix that replaces the rear position light of an aircraft. It combines a Mode S transponder with 1090 MHz Extended Squitter ADS-B Out, an integrated SBAS (WAAS) GPS position source and an LED rear position light in one tail-mounted unit.

The transponder works with space-based and ground-based ADS-B surveillance. Because the GPS receiver and antenna are built into the unit, no separate GNSS source and no additional antennas are needed for ADS-B Out. The LED light is rated for 20,000 hours of life and draws far less power than incandescent bulbs. The whole unit draws about 3 W and weighs about 140 g. A retailer listing gives an operating temperature range of -45 to +70 degrees C and an altitude limit of 60,000 feet.

The tailBeaconX is installed in place of the existing rear position light, using the existing wiring for power and control. The maker states that no panel modifications and no structural changes are required. Squawk code and mode are set from a compatible EFIS or control head supporting the UCP protocol, such as the AV-30 and the experimental AV-30-E and AV-20-E. The unit can also be configured with the SkyBeacon mobile app on iOS and Android through its Wi-Fi interface. It is largely maintenance-free, with periodic software updates and functional checks, and has no user-serviceable parts.

The TSO version, part number UAX-90059-03, is covered by FAA STC SA04568CH. International approvals listed by the maker are EASA STC 10079395, Brazil 2022S08-05, Transport Canada SA22-51 and UK CAA 00174. An Aireon report on space-based ADS-B performance is available for it.

The maker positions the tailBeaconX for general aviation and urban air mobility, and for most aircraft that have a rear position light to replace, in US and international airspace. Typical uses are retrofit ADS-B Out compliance for certified light aircraft and ADS-B Out equipage for eVTOL and other urban air mobility aircraft.