tailBeacon ADS-B/WAAS GPS/Encoder Tail Position Light

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Manufacturer: uAvionix

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tailBeacon is designed to be a direct replacement for the common navigation light or nav/strobe found on the tail of many aircraft and will meet the 2020 ADS-B requirements when paired with an operational Mode C or Mode S transponder.  tailBeacon is a Class B1S UAT transmitter and WAAS GPS integrated into a tail position light. This unit comes in experimental and TSO'd versions.

 tailBeacon has the form factor and installation characteristics of a traditional Grimes style rear position light referred to as a Grimes model S or A-2064. The tailBeacon will work with any Mode C and Mode S transponder.  Due to the unique design and technology of the tailBeacon, there is no need to run any new wiring to the transponder. Installation is fast and easy.


UAT Transmitter
Meets the performance requirements of TSO154c Class B1S. RTCA DO-282B Class B1S

Position Light
Meets performance requirements of TSOC30c Type III

Integrated RAIM processor for Security and Integrity protection
SBAS corrections and health messages used to detect and correct satellite range errors
Satellite pseudo range step errors detectedand excluded
SBAS fast and long-term corrections applied

Power Transcoder
Decodes altitude and squawk via aircraft electrical system

Certified via approved model list (AML) for STC'd installation on hundreds of aircraft makes and models
Patents Pending

ADS-B Out: §91.225, §91.227, AC 20-165B
GNSS Position: AC 20-165B
Position Light: SAE/AS8037

Input Voltage: 11-31v DC

Operating Power: 3 Watts

Size: 92x43x73 mm

Weight: 70 grams

SDA/SIL: 2/3

Operating Temp: -45 to 80°C

Color: Aviation White

Intensity: 40 candelas

Physical Wifi Configuration: 802.11 b/g/n

App Compatibility: iOS, Android

Decodes Mode A, C, and S via DC light

See below for answers to our most popular questions.

Have a Question?


    This unit does satisfy the ADS-B requirements for a Cessna 182P and many other aircraft. Installation would be performed under a 337 Field Approval Form with the STC as backup documentation.

    uAvionix tailBeacon and skyBeacon ADS-B system may be installed on an aircraft not listed on the applicable AML STC as per FAA Policy Memorandum dated March 2, 2016 and FAA Technical Paper AFS360-2017-1. The policy refers to these installations as follow-on installations. 

    Below is a link to the installation manual. Please reference this and your existing tail beacon/position light for fit.

    tailBeacon Installation Manual

  • Is it EASA certified?

    This unit is NOT EASA certified at this time. Link to the STC can be found below.

    Tailbeacon STC

  • I have an existing Garmin GTX-330 (not 'ES') and wanted to know if the uAvionix tailBeacon was certified to work with it.

    Per the installation manual, the tailBeacon will work with a Mode A/C transponder. Mode S is not compatible per this documentation.

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