Apparatus

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sensors Mode-S transponder

A2B9B7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N275GT · CESSNA 172 Skyhawk · operated by PS N275GT LLC

Hex
A2B9B7
Octal
50534667
Decimal
10,664,375
Country
US
Tail
N275GT
Type
C172
No current signal · last broadcast 20h ago
Flights observed
123
Distinct callsigns
1
Country
US
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S A2B9B7.

Country allocation

The ICAO 24-bit address A2B9B7 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
N275GT - 123 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N275GT ATW → ATW Jul 13, 16:30 UTCJul 13, 17:25 UTC55m
2026-07-13 N275GT ATW → ATW Jul 13, 15:00 UTCJul 13, 15:35 UTC35m
2026-07-13 N275GT - Jul 13, 12:15 UTCJul 13, 13:15 UTC1h 0m
2026-07-10 N275GT - Jul 10, 22:55 UTCJul 10, 23:30 UTC35m
2026-07-06 N275GT - Jul 6, 17:05 UTCJul 6, 17:45 UTC40m
2026-07-06 N275GT ATW → ATW Jul 6, 12:10 UTCJul 6, 14:05 UTC1h 55m
2026-07-06 N275GT ATW → ATW Jul 6, 00:00 UTCJul 6, 01:20 UTC1h 20m
2026-07-05 N275GT - Jul 5, 20:00 UTCJul 5, 23:00 UTC3h 0m
2026-07-05 N275GT - Jul 5, 14:55 UTCJul 5, 17:20 UTC2h 25m
2026-07-04 N275GT ATW → ATW Jul 4, 18:25 UTCJul 4, 18:55 UTC30m
2026-06-30 N275GT ATW → ATW Jun 30, 20:40 UTCJun 30, 21:30 UTC50m
2026-06-30 N275GT - Jun 30, 18:45 UTCJun 30, 19:25 UTC40m
2026-06-30 N275GT ATW → ATW Jun 30, 14:25 UTCJun 30, 15:20 UTC55m
2026-06-28 N275GT ATW → ATW Jun 28, 15:40 UTCJun 28, 16:39 UTC1h 0m
2026-06-28 N275GT ATW → ATW Jun 28, 13:40 UTCJun 28, 14:45 UTC1h 5m
2026-06-26 N275GT ATW → ATW Jun 26, 17:29 UTCJun 26, 18:44 UTC1h 15m
2026-06-26 N275GT ATW → ATW Jun 26, 15:49 UTCJun 26, 16:39 UTC50m
2026-06-25 N275GT ATW → ATW Jun 25, 14:24 UTCJun 25, 15:20 UTC55m
2026-06-23 N275GT ATW → ATW Jun 23, 21:45 UTCJun 23, 23:34 UTC1h 50m
2026-06-23 N275GT - Jun 23, 16:50 UTCJun 23, 17:39 UTC50m
2026-06-23 N275GT ATW → ATW Jun 23, 14:35 UTCJun 23, 15:34 UTC1h 0m
2026-06-23 N275GT - Jun 23, 12:15 UTCJun 23, 13:19 UTC1h 5m
2026-06-22 N275GT - Jun 22, 23:39 UTCJun 23, 00:50 UTC1h 10m
2026-06-22 N275GT - Jun 22, 21:49 UTCJun 22, 22:49 UTC1h 0m
2026-06-22 N275GT - Jun 22, 18:30 UTCJun 22, 19:29 UTC1h 0m
2026-06-22 N275GT - Jun 22, 16:34 UTCJun 22, 17:40 UTC1h 5m
2026-06-22 N275GT - Jun 22, 14:14 UTCJun 22, 15:35 UTC1h 20m
2026-06-19 N275GT - Jun 19, 21:14 UTCJun 19, 21:49 UTC35m
2026-06-19 N275GT ATW → ATW Jun 19, 19:25 UTCJun 19, 20:29 UTC1h 5m
2026-06-19 N275GT ATW → ATW Jun 19, 17:29 UTCJun 19, 18:30 UTC1h 0m
2026-06-19 N275GT - Jun 19, 12:25 UTCJun 19, 13:14 UTC50m
2026-06-18 N275GT - Jun 18, 18:20 UTCJun 18, 19:30 UTC1h 10m
2026-06-18 N275GT ATW → ATW Jun 18, 14:35 UTCJun 18, 15:45 UTC1h 10m
2026-06-16 N275GT - Jun 16, 13:44 UTCJun 16, 14:39 UTC55m
2026-06-15 N275GT - Jun 15, 23:25 UTCJun 16, 00:50 UTC1h 25m
2026-06-15 N275GT - Jun 15, 20:15 UTCJun 15, 20:54 UTC40m
2026-06-15 N275GT - Jun 15, 17:30 UTCJun 15, 18:20 UTC50m
2026-06-15 N275GT ATW → ATW Jun 15, 15:40 UTCJun 15, 16:35 UTC55m
2026-06-14 N275GT - Jun 14, 19:50 UTCJun 14, 20:25 UTC35m
2026-06-13 N275GT - Jun 13, 15:35 UTCJun 13, 16:15 UTC40m
2026-06-11 N275GT - Jun 11, 14:45 UTCJun 11, 15:40 UTC55m
2026-06-10 N275GT ATW → ATW Jun 10, 18:20 UTCJun 10, 18:55 UTC35m
2026-06-09 N275GT - Jun 9, 17:40 UTCJun 9, 19:15 UTC1h 35m
2026-06-09 N275GT - Jun 9, 14:45 UTCJun 9, 15:50 UTC1h 5m
2026-06-06 N275GT - Jun 6, 18:59 UTCJun 6, 19:10 UTC10m
2026-06-06 N275GT - Jun 6, 16:45 UTCJun 6, 17:24 UTC40m
2026-06-05 N275GT ATW → ATW Jun 5, 17:40 UTCJun 5, 18:40 UTC1h 0m
2026-06-04 N275GT - Jun 4, 14:20 UTCJun 4, 15:25 UTC1h 5m
2026-06-03 N275GT - Jun 3, 23:25 UTCJun 4, 00:55 UTC1h 30m
2026-06-03 N275GT - Jun 3, 17:35 UTCJun 3, 18:40 UTC1h 5m

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 N275GT page for operator, model, and routing details .

Mode-S A2B9B7 frequently asked

What is Mode-S code A2B9B7?
A2B9B7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N275GT.
Where is Mode-S A2B9B7 registered?
Mode-S code A2B9B7 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 A2B9B7 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B9B7, octal 50534667, decimal 10,664,375.
What flights does A2B9B7 operate?
Mode-S A2B9B7 has broadcast 1 distinct callsign, including N275GT.