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VTU-20 is the FAA-approved Vehicle Movement Area Transponder that makes airport vehicles visible to Air Traffic Control and to nearby aircraft — for safer, more efficient movement-area operations.
VTU-20 broadcasts ADS-B Out once. The tower sees it on surface surveillance; the flight deck sees it via ADS-B In.
FlightLine SAI — or the FAA's ASDE-X / ASSC — shows every equipped aircraft and vehicle to controllers, by callsign.
Pilots see and are alerted to your vehicle on their EFB — fed by uAvionix Sentry, the receiver we build for ForeFlight. 150k+ aircraft equipped; ADS-B In is linked to an 89% lower fatal-accident likelihood.
A compact, all-in-one VMAT — 20 W UAT on 978 MHz, certified internal GPS, integrated antennas, in a rugged IP67 enclosure.
20 W UAT on 978 MHz broadcasts identity, surface position and status — the message set surveillance is built on.
A TSO-C145e Class B1 source is built in, so every broadcast is accurate enough for the tower to trust.
Magnetic base mounts in minutes with no vehicle modification; reuse it across seasonal vehicles.
FAA-approved maps enable and disable transmission by location — on-field it talks, off-field it stays quiet.
A simple in-cab panel shows status and gives manual on/off. Vehicle ID and ICAO ID are field-configurable.
IP67-rated, −45 to +80 °C, 9–32 V DC — built for plows, ARFF and airfield trucks.
Two FAA actions moved VMATs from "nice to have" to funded infrastructure — and VTU-20 is written to their spec. Program Guidance Letter 24-01 and CertAlert 25-01 make VMATs eligible for AIP funding at ASDE-X, ASSC and SAI airports.
The tower (SAI) and the flight deck (ADS-B In on ForeFlight / Garmin, via uAvionix Sentry) see your vehicle, live.
The same SAI feed puts the picture & proactive runway alerts in the driver's cab. Not a SAI airport yet? Self-install the receivers, or have uAvionix install them.
Each product is a chapter of one story — sense → see → be seen → be aware. This page is one chapter; start anywhere, they connect.
Surface awareness for the tower — the picture every vehicle and aircraft appears in.
View page → Sense · SeeRadar-like airspace awareness for contract towers — without the radar.
View page → Be seenThe FAA-approved vehicle transponder (VMAT) — ADS-B Out on the surface.
You are here Be awareThe tower’s picture & proactive runway alerts in the driver’s cab.
View page → AccessPortable ADS-B receiver for fields with no infrastructure at all.
Coming soon Be aware · cockpitADS-B In on the flight deck — Sentry is the receiver uAvionix builds for ForeFlight.
Partner ↗Whether the FAA just installed SAI in your tower, you already have SAI / ASDE-X / ASSC, you're planning a VMAT deployment at a non-towered field, or you're evaluating surface awareness for driver safety — we'll help you scope and fund it.