Apparatus

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sensors Mode-S transponder

A668F1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N512AV · operated by WESTWIND SCHOOL OF AERONAUTICS PHOENIX LLC DBA, UNITED AVIATE ACADEMY

Hex
A668F1
Octal
51464361
Decimal
10,905,841
Country
US
Tail
N512AV
Type
SR20
No current signal · last broadcast 1d ago
Flights observed
216
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A668F1.

Country allocation

The ICAO 24-bit address A668F1 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
VAR512 - 216 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 VAR512 - Jul 12, 21:50 UTCJul 12, 22:45 UTC55m
2026-07-12 VAR512 - Jul 12, 20:35 UTCJul 12, 21:05 UTC30m
2026-07-11 VAR512 VNY → GYR Jul 11, 22:45 UTCJul 12, 01:05 UTC2h 20m
2026-07-11 VAR512 GYR → VNY Jul 11, 17:40 UTCJul 11, 20:05 UTC2h 25m
2026-07-10 VAR512 GYR → GYR Jul 10, 22:05 UTCJul 11, 00:00 UTC1h 55m
2026-07-08 VAR512 - Jul 8, 23:40 UTCJul 8, 23:45 UTC5m
2026-07-08 VAR512 - Jul 8, 23:20 UTCJul 8, 23:35 UTC15m
2026-07-07 VAR512 GYR → GYR Jul 7, 12:55 UTCJul 7, 14:15 UTC1h 20m
2026-07-07 VAR512 GYR → GYR Jul 7, 03:20 UTCJul 7, 04:35 UTC1h 15m
2026-07-07 VAR512 GYR → GYR Jul 7, 01:00 UTCJul 7, 02:15 UTC1h 15m
2026-07-06 VAR512 GYR → GYR Jul 6, 21:40 UTCJul 6, 22:40 UTC1h 0m
2026-07-06 VAR512 - Jul 6, 17:25 UTCJul 6, 18:40 UTC1h 15m
2026-07-06 VAR512 GYR → GYR Jul 6, 13:40 UTCJul 6, 16:45 UTC3h 5m
2026-07-06 VAR512 - Jul 6, 04:50 UTCJul 6, 05:25 UTC35m
2026-07-06 VAR512 - Jul 6, 02:50 UTCJul 6, 03:25 UTC35m
2026-07-05 VAR512 GYR → SNA Jul 5, 23:30 UTCJul 6, 01:40 UTC2h 10m
2026-07-05 VAR512 GYR → GYR Jul 5, 20:55 UTCJul 5, 22:05 UTC1h 10m
2026-07-05 VAR512 GYR → GYR Jul 5, 18:15 UTCJul 5, 19:20 UTC1h 5m
2026-07-05 VAR512 - Jul 5, 04:35 UTCJul 5, 05:10 UTC35m
2026-07-05 VAR512 - Jul 5, 00:05 UTCJul 5, 01:25 UTC1h 20m
2026-07-04 VAR512 GYR → GYR Jul 4, 20:05 UTCJul 4, 22:10 UTC2h 5m
2026-07-04 VAR512 GYR → GYR Jul 4, 17:05 UTCJul 4, 18:50 UTC1h 45m
2026-07-04 VAR512 - Jul 4, 15:25 UTCJul 4, 15:35 UTC10m
2026-07-04 VAR512 - Jul 4, 15:05 UTCJul 4, 15:20 UTC15m
2026-07-04 VAR512 - Jul 4, 14:45 UTCJul 4, 15:00 UTC15m
2026-07-04 VAR512 - Jul 4, 13:55 UTCJul 4, 14:40 UTC45m
2026-07-03 VAR512 GYR → GYR Jul 3, 21:35 UTCJul 3, 23:15 UTC1h 40m
2026-07-03 VAR512 GYR → GYR Jul 3, 18:15 UTCJul 3, 19:45 UTC1h 30m
2026-07-03 VAR512 - Jul 3, 16:30 UTCJul 3, 17:00 UTC30m
2026-07-03 VAR512 - Jul 3, 15:30 UTCJul 3, 16:05 UTC35m
2026-07-02 VAR512 GYR → GYR Jul 2, 21:40 UTCJul 3, 00:10 UTC2h 30m
2026-07-02 VAR512 GYR → GYR Jul 2, 18:25 UTCJul 2, 19:25 UTC1h 0m
2026-07-02 VAR512 GYR → GYR Jul 2, 15:00 UTCJul 2, 16:10 UTC1h 10m
2026-07-01 VAR512 - Jul 1, 19:35 UTCJul 1, 20:40 UTC1h 5m
2026-07-01 VAR512 - Jul 1, 18:10 UTCJul 1, 18:55 UTC45m
2026-06-26 VAR512 - Jun 26, 15:45 UTCJun 26, 16:35 UTC50m
2026-06-26 VAR512 - Jun 26, 14:05 UTCJun 26, 15:10 UTC1h 5m
2026-06-25 VAR512 GYR → GYR Jun 25, 18:39 UTCJun 25, 20:19 UTC1h 40m
2026-06-25 VAR512 GYR → GYR Jun 25, 15:10 UTCJun 25, 16:50 UTC1h 40m
2026-06-24 VAR512 GYR → GYR Jun 24, 15:00 UTCJun 24, 16:50 UTC1h 50m
2026-06-24 VAR512 GYR → GYR Jun 24, 01:39 UTCJun 24, 02:54 UTC1h 15m
2026-06-23 VAR512 GYR → GYR Jun 23, 22:29 UTCJun 23, 23:39 UTC1h 10m
2026-06-23 VAR512 GYR → GYR Jun 23, 20:10 UTCJun 23, 21:20 UTC1h 10m
2026-06-23 VAR512 - Jun 23, 18:04 UTCJun 23, 19:15 UTC1h 10m
2026-06-22 VAR512 GYR → GYR Jun 22, 22:49 UTCJun 23, 01:04 UTC2h 15m
2026-06-22 VAR512 GYR → GYR Jun 22, 19:40 UTCJun 22, 21:54 UTC2h 15m
2026-06-22 VAR512 GYR → GYR Jun 22, 15:14 UTCJun 22, 17:55 UTC2h 40m
2026-06-22 VAR512 ONT → GYR Jun 22, 04:19 UTCJun 22, 06:15 UTC1h 55m
2026-06-22 VAR512 - Jun 22, 02:25 UTCJun 22, 02:45 UTC20m
2026-06-22 VAR512 - Jun 22, 00:24 UTCJun 22, 01:49 UTC1h 25m

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 N512AV page for operator, model, and routing details .

Mode-S A668F1 frequently asked

What is Mode-S code A668F1?
A668F1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N512AV.
Where is Mode-S A668F1 registered?
Mode-S code A668F1 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 A668F1 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A668F1, octal 51464361, decimal 10,905,841.
What flights does A668F1 operate?
Mode-S A668F1 has broadcast 1 distinct callsign, including VAR512.