Apparatus

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sensors Mode-S transponder

A1279F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1737 · CESSNA 172 Skyhawk · operated by HIGH FLIGHT ACADEMY LLC

Hex
A1279F
Octal
50223637
Decimal
10,561,439
Country
US
Tail
N1737
Type
C172
No current signal · last broadcast 1d ago
Flights observed
324
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A1279F.

Country allocation

The ICAO 24-bit address A1279F 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
N1737 - 324 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 N1737 BTP → BTP Jul 16, 13:54 UTCJul 16, 14:25 UTC30m
2026-07-15 N1737 BTP → BTP Jul 15, 22:00 UTCJul 16, 00:30 UTC2h 30m
2026-07-15 N1737 BTP → BTP Jul 15, 15:50 UTCJul 15, 21:30 UTC5h 40m
2026-07-15 N1737 BTP → BTP Jul 15, 14:05 UTCJul 15, 15:15 UTC1h 10m
2026-07-15 N1737 BTP → BTP Jul 15, 01:35 UTCJul 15, 02:35 UTC1h 0m
2026-07-14 N1737 BTP → BTP Jul 14, 23:20 UTCJul 15, 00:10 UTC50m
2026-07-14 N1737 - Jul 14, 22:00 UTCJul 14, 22:30 UTC30m
2026-07-14 N1737 - Jul 14, 20:20 UTCJul 14, 21:00 UTC40m
2026-07-14 N1737 BTP → BTP Jul 14, 14:20 UTCJul 14, 15:10 UTC50m
2026-07-14 N1737 BTP → BTP Jul 14, 12:50 UTCJul 14, 13:45 UTC55m
2026-07-13 N1737 BTP → BTP Jul 13, 20:20 UTCJul 14, 00:15 UTC3h 55m
2026-07-13 N1737 BTP → BTP Jul 13, 18:50 UTCJul 13, 19:30 UTC40m
2026-07-13 N1737 BTP → BTP Jul 13, 17:10 UTCJul 13, 18:15 UTC1h 5m
2026-07-13 N1737 BTP → BTP Jul 13, 12:45 UTCJul 13, 15:35 UTC2h 50m
2026-07-12 N1737 BTP → BTP Jul 12, 23:30 UTCJul 13, 00:20 UTC50m
2026-07-12 N1737 - Jul 12, 21:40 UTCJul 12, 22:05 UTC25m
2026-07-12 N1737 - Jul 12, 20:40 UTCJul 12, 21:05 UTC25m
2026-07-12 N1737 BTP → BTP Jul 12, 13:05 UTCJul 12, 18:35 UTC5h 30m
2026-07-11 N1737 BTP → BTP Jul 11, 18:35 UTCJul 11, 21:45 UTC3h 10m
2026-07-10 N1737 BTP → BTP Jul 10, 17:15 UTCJul 10, 18:20 UTC1h 5m
2026-07-10 N1737 BTP → BTP Jul 10, 12:45 UTCJul 10, 13:20 UTC35m
2026-07-10 N1737 BTP → BTP Jul 10, 02:00 UTCJul 10, 03:25 UTC1h 25m
2026-07-09 N1737 BTP → BTP Jul 9, 23:15 UTCJul 10, 00:35 UTC1h 20m
2026-07-09 N1737 BTP → BTP Jul 9, 20:20 UTCJul 9, 21:35 UTC1h 15m
2026-07-09 N1737 BTP → BTP Jul 9, 12:50 UTCJul 9, 16:50 UTC4h 0m
2026-07-09 N1737 BTP → BTP Jul 9, 01:20 UTCJul 9, 02:15 UTC55m
2026-07-08 N1737 BTP → BTP Jul 8, 23:15 UTCJul 9, 00:30 UTC1h 15m
2026-07-08 N1737 BTP → BTP Jul 8, 20:10 UTCJul 8, 21:40 UTC1h 30m
2026-07-08 N1737 BTP → BTP Jul 8, 17:20 UTCJul 8, 18:10 UTC50m
2026-07-07 N1737 BTP → BTP Jul 7, 20:15 UTCJul 7, 21:30 UTC1h 15m
2026-07-07 N1737 BTP → BTP Jul 7, 17:25 UTCJul 7, 19:00 UTC1h 35m
2026-07-06 N1737 BTP → BTP Jul 6, 23:25 UTCJul 7, 00:05 UTC40m
2026-07-06 N1737 BTP → BTP Jul 6, 20:35 UTCJul 6, 21:10 UTC35m
2026-07-06 N1737 BTP → BTP Jul 6, 18:35 UTCJul 6, 19:10 UTC35m
2026-07-04 N1737 BTP → BTP Jul 4, 17:25 UTCJul 4, 18:30 UTC1h 5m
2026-07-04 N1737 BTP → BTP Jul 4, 12:55 UTCJul 4, 13:55 UTC1h 0m
2026-07-03 N1737 BTP → BTP Jul 3, 20:00 UTCJul 3, 21:10 UTC1h 10m
2026-07-03 N1737 BTP → BTP Jul 3, 16:10 UTCJul 3, 17:35 UTC1h 25m
2026-07-03 N1737 BTP → BTP Jul 3, 14:30 UTCJul 3, 15:30 UTC1h 0m
2026-07-03 N1737 BTP → BTP Jul 3, 12:40 UTCJul 3, 13:55 UTC1h 15m
2026-07-02 N1737 BTP → BTP Jul 2, 22:00 UTCJul 3, 00:10 UTC2h 10m
2026-07-02 N1737 BTP → BTP Jul 2, 20:20 UTCJul 2, 20:55 UTC35m
2026-07-02 N1737 BTP → BTP Jul 2, 18:55 UTCJul 2, 19:50 UTC55m
2026-07-02 N1737 BTP → BTP Jul 2, 17:25 UTCJul 2, 18:20 UTC55m
2026-07-02 N1737 BTP → BTP Jul 2, 14:20 UTCJul 2, 15:25 UTC1h 5m
2026-07-02 N1737 BTP → BTP Jul 2, 12:45 UTCJul 2, 13:50 UTC1h 5m
2026-07-01 N1737 BTP → BTP Jul 1, 23:10 UTCJul 2, 00:20 UTC1h 10m
2026-07-01 N1737 BTP → BTP Jul 1, 21:45 UTCJul 1, 22:30 UTC45m
2026-07-01 N1737 BTP → BTP Jul 1, 18:50 UTCJul 1, 19:40 UTC50m
2026-07-01 N1737 BTP → BTP Jul 1, 14:20 UTCJul 1, 18:15 UTC3h 55m

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 N1737 page for operator, model, and routing details .

Mode-S A1279F frequently asked

What is Mode-S code A1279F?
A1279F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1737.
Where is Mode-S A1279F registered?
Mode-S code A1279F 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 A1279F 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 A1279F, octal 50223637, decimal 10,561,439.
What flights does A1279F operate?
Mode-S A1279F has broadcast 1 distinct callsign, including N1737.