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sensors Mode-S transponder

A64172

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N502AV · operated by WESTWIND SCHOOL OF AERONAUTICS PHOENIX DBA, UNITED AVIATE ACADEMY

Hex
A64172
Octal
51440562
Decimal
10,895,730
Country
US
Tail
N502AV
Type
SR20
No current signal · last broadcast 7h ago
Flights observed
205
Distinct callsigns
1
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A64172.

Country allocation

The ICAO 24-bit address A64172 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
VAR502 - 205 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 VAR502 GYR → GYR Jul 18, 02:25 UTCJul 18, 03:15 UTC51m
2026-07-16 VAR502 GYR → GYR Jul 16, 14:10 UTCJul 16, 16:09 UTC2h 0m
2026-07-14 VAR502 - Jul 14, 18:50 UTCJul 14, 19:30 UTC40m
2026-07-14 VAR502 - Jul 14, 18:10 UTCJul 14, 18:40 UTC30m
2026-07-14 VAR502 GYR → GYR Jul 14, 13:55 UTCJul 14, 17:00 UTC3h 5m
2026-07-13 VAR502 GYR → GYR Jul 13, 21:05 UTCJul 13, 22:35 UTC1h 30m
2026-07-13 VAR502 GYR → GYR Jul 13, 17:45 UTCJul 13, 19:20 UTC1h 35m
2026-07-13 VAR502 GYR → GYR Jul 13, 15:20 UTCJul 13, 16:25 UTC1h 5m
2026-07-13 VAR502 GYR → GYR Jul 13, 00:35 UTCJul 13, 02:10 UTC1h 35m
2026-07-12 VAR502 GYR → GYR Jul 12, 21:05 UTCJul 12, 22:15 UTC1h 10m
2026-07-11 VAR502 GYR → GYR Jul 11, 23:00 UTCJul 12, 00:10 UTC1h 10m
2026-07-11 VAR502 GYR → GYR Jul 11, 19:50 UTCJul 11, 21:00 UTC1h 10m
2026-07-11 VAR502 - Jul 11, 16:20 UTCJul 11, 17:25 UTC1h 5m
2026-07-11 VAR502 - Jul 11, 14:05 UTCJul 11, 15:20 UTC1h 15m
2026-07-11 VAR502 - Jul 11, 04:05 UTCJul 11, 05:55 UTC1h 50m
2026-07-11 VAR502 - Jul 11, 01:05 UTCJul 11, 02:45 UTC1h 40m
2026-07-10 VAR502 GYR → GYR Jul 10, 21:35 UTCJul 10, 23:55 UTC2h 20m
2026-07-10 VAR502 GYR → GYR Jul 10, 18:45 UTCJul 10, 20:20 UTC1h 35m
2026-07-09 VAR502 GYR → GYR Jul 9, 17:00 UTCJul 9, 18:20 UTC1h 20m
2026-07-08 VAR502 GYR → GYR Jul 8, 21:50 UTCJul 8, 23:15 UTC1h 25m
2026-07-08 VAR502 GYR → GYR Jul 8, 16:30 UTCJul 8, 18:10 UTC1h 40m
2026-07-07 VAR502 GYR → GYR Jul 7, 23:35 UTCJul 8, 01:00 UTC1h 25m
2026-07-07 VAR502 GYR → GYR Jul 7, 18:15 UTCJul 7, 19:55 UTC1h 40m
2026-07-07 VAR502 GYR → GYR Jul 7, 03:25 UTCJul 7, 04:35 UTC1h 10m
2026-07-07 VAR502 GYR → GYR Jul 7, 01:15 UTCJul 7, 02:30 UTC1h 15m
2026-07-06 VAR502 GYR → GYR Jul 6, 22:50 UTCJul 7, 00:05 UTC1h 15m
2026-07-06 VAR502 - Jul 6, 20:50 UTCJul 6, 21:30 UTC40m
2026-07-06 VAR502 - Jul 6, 19:25 UTCJul 6, 20:15 UTC50m
2026-07-06 VAR502 GYR → GYR Jul 6, 16:25 UTCJul 6, 17:45 UTC1h 20m
2026-07-04 VAR502 DVT → GYR Jul 4, 00:35 UTCJul 4, 01:35 UTC1h 0m
2026-07-03 VAR502 GYR → DVT Jul 3, 21:35 UTCJul 3, 23:20 UTC1h 45m
2026-07-02 VAR502 - Jul 2, 18:35 UTCJul 2, 19:35 UTC1h 0m
2026-07-02 VAR502 - Jul 2, 17:45 UTCJul 2, 18:05 UTC20m
2026-07-02 VAR502 GYR → GYR Jul 2, 14:55 UTCJul 2, 16:30 UTC1h 35m
2026-07-02 VAR502 GYR → GYR Jul 2, 03:20 UTCJul 2, 05:00 UTC1h 40m
2026-07-02 VAR502 - Jul 2, 00:35 UTCJul 2, 01:40 UTC1h 5m
2026-07-01 VAR502 - Jul 1, 23:40 UTCJul 2, 00:00 UTC20m
2026-07-01 VAR502 GYR → GYR Jul 1, 23:05 UTCJul 1, 23:25 UTC20m
2026-07-01 VAR502 GYR → GYR Jul 1, 20:35 UTCJul 1, 22:20 UTC1h 45m
2026-07-01 VAR502 GYR → GYR Jul 1, 13:40 UTCJul 1, 16:05 UTC2h 25m
2026-07-01 VAR502 - Jul 1, 03:55 UTCJul 1, 05:45 UTC1h 50m
2026-07-01 VAR502 GYR → TUS Jul 1, 00:45 UTCJul 1, 02:40 UTC1h 55m
2026-06-30 VAR502 GYR → GYR Jun 30, 20:50 UTCJun 30, 22:35 UTC1h 45m
2026-06-30 VAR502 GYR → GYR Jun 30, 17:45 UTCJun 30, 18:55 UTC1h 10m
2026-06-30 VAR502 GYR → GYR Jun 30, 13:50 UTCJun 30, 16:55 UTC3h 5m
2026-06-30 VAR502 - Jun 30, 04:00 UTCJun 30, 05:25 UTC1h 25m
2026-06-29 VAR502 GYR → GYR Jun 29, 22:15 UTCJun 29, 23:09 UTC55m
2026-06-29 VAR502 - Jun 29, 20:35 UTCJun 29, 20:40 UTC5m
2026-06-29 VAR502 GYR → GYR Jun 29, 19:29 UTCJun 29, 20:30 UTC1h 0m
2026-06-29 VAR502 GYR → GYR Jun 29, 16:35 UTCJun 29, 18:25 UTC1h 50m

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 N502AV page for operator, model, and routing details .

Mode-S A64172 frequently asked

What is Mode-S code A64172?
A64172 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N502AV.
Where is Mode-S A64172 registered?
Mode-S code A64172 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 A64172 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A64172, octal 51440562, decimal 10,895,730.
What flights does A64172 operate?
Mode-S A64172 has broadcast 1 distinct callsign, including VAR502.