sensors Mode-S transponder

A7EA99

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N609VR · operated by ORDUN DAVID

Hex
A7EA99
Octal
51765231
Decimal
11,004,569
Country
US
Tail
N609VR
No current signal · last broadcast 20d ago
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S A7EA99.

Country allocation

The ICAO 24-bit address A7EA99 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N609VR - 6 2026-05-15

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-05-15 N609VR - May 15, 13:50 UTCMay 15, 14:05 UTC15m
2026-05-15 N609VR - May 15, 12:30 UTCMay 15, 12:45 UTC15m
2026-05-14 N609VR - May 14, 17:10 UTCMay 14, 18:15 UTC1h 5m
2026-05-14 N609VR - May 14, 15:35 UTCMay 14, 16:35 UTC1h 0m
2026-05-14 N609VR - May 14, 13:30 UTCMay 14, 15:01 UTC1h 30m
2026-05-13 N609VR - May 13, 19:40 UTCMay 13, 22:20 UTC2h 40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N609VR page for operator, model, and routing details .

Mode-S A7EA99 frequently asked

What is Mode-S code A7EA99?
A7EA99 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N609VR.
Where is Mode-S A7EA99 registered?
Mode-S code A7EA99 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A7EA99 broadcasting right now?
No active broadcast right now. Last signal was 20d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7EA99, octal 51765231, decimal 11,004,569.
What flights does A7EA99 operate?
Mode-S A7EA99 has broadcast 1 distinct callsign, including N609VR.