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sensors Mode-S transponder

A2239B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N237MG · operated by GEORGIA AVIATION AUTHORITY

Hex
A2239B
Octal
50421633
Decimal
10,625,947
Country
US
Tail
N237MG
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
115
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A2239B.

Country allocation

The ICAO 24-bit address A2239B 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
NIT237 - 115 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 NIT237 - Jul 12, 14:30 UTCJul 12, 14:40 UTC10m
2026-07-09 NIT237 - Jul 9, 21:50 UTCJul 9, 22:45 UTC55m
2026-07-09 NIT237 - Jul 9, 16:35 UTCJul 9, 17:50 UTC1h 15m
2026-07-08 NIT237 - Jul 8, 17:50 UTCJul 8, 18:50 UTC1h 0m
2026-07-08 NIT237 - Jul 8, 13:35 UTCJul 8, 14:45 UTC1h 10m
2026-07-07 NIT237 - Jul 7, 18:30 UTCJul 7, 19:05 UTC35m
2026-07-07 NIT237 - Jul 7, 14:15 UTCJul 7, 15:20 UTC1h 5m
2026-07-07 NIT237 - Jul 7, 12:25 UTCJul 7, 13:40 UTC1h 15m
2026-07-02 NIT237 - Jul 2, 22:20 UTCJul 2, 23:00 UTC40m
2026-07-02 NIT237 - Jul 2, 20:10 UTCJul 2, 21:30 UTC1h 20m
2026-07-02 NIT237 - Jul 2, 18:15 UTCJul 2, 19:30 UTC1h 15m
2026-07-02 NIT237 - Jul 2, 14:35 UTCJul 2, 15:30 UTC55m
2026-07-02 NIT237 - Jul 2, 12:20 UTCJul 2, 13:25 UTC1h 5m
2026-07-01 NIT237 - Jul 1, 12:20 UTCJul 1, 13:10 UTC50m
2026-06-30 NIT237 - Jun 30, 13:05 UTCJun 30, 14:25 UTC1h 20m
2026-06-29 NIT237 - Jun 29, 15:19 UTCJun 29, 15:49 UTC30m
2026-06-26 NIT237 - Jun 26, 20:24 UTCJun 26, 21:20 UTC55m
2026-06-26 NIT237 - Jun 26, 18:09 UTCJun 26, 18:44 UTC35m
2026-06-25 NIT237 - Jun 25, 18:29 UTCJun 25, 19:20 UTC50m
2026-06-25 NIT237 - Jun 25, 14:34 UTCJun 25, 15:24 UTC50m
2026-06-24 NIT237 - Jun 24, 21:24 UTCJun 24, 21:40 UTC15m
2026-06-24 NIT237 - Jun 24, 20:20 UTCJun 24, 20:44 UTC25m
2026-06-23 NIT237 - Jun 23, 20:24 UTCJun 23, 21:34 UTC1h 10m
2026-06-23 NIT237 - Jun 23, 17:09 UTCJun 23, 17:34 UTC25m
2026-06-23 NIT237 - Jun 23, 14:25 UTCJun 23, 15:24 UTC1h 0m
2026-06-22 NIT237 - Jun 22, 20:34 UTCJun 22, 21:35 UTC1h 0m
2026-06-20 NIT237 - Jun 20, 22:35 UTCJun 20, 23:10 UTC35m
2026-06-16 NIT237 - Jun 16, 15:50 UTCJun 16, 16:55 UTC1h 5m
2026-06-16 NIT237 - Jun 16, 14:05 UTCJun 16, 14:50 UTC45m
2026-06-16 NIT237 - Jun 16, 11:30 UTCJun 16, 12:45 UTC1h 15m
2026-06-15 NIT237 - Jun 15, 20:10 UTCJun 15, 20:34 UTC25m
2026-06-15 NIT237 - Jun 15, 18:35 UTCJun 15, 19:14 UTC40m
2026-06-14 NIT237 - Jun 14, 16:40 UTCJun 14, 18:05 UTC1h 25m
2026-06-13 NIT237 - Jun 13, 14:30 UTCJun 13, 15:20 UTC50m
2026-06-12 NIT237 - Jun 12, 17:00 UTCJun 12, 17:50 UTC50m
2026-06-12 NIT237 - Jun 12, 14:25 UTCJun 12, 15:35 UTC1h 10m
2026-06-12 NIT237 - Jun 12, 12:50 UTCJun 12, 13:15 UTC25m
2026-06-11 NIT237 - Jun 11, 14:20 UTCJun 11, 14:35 UTC15m
2026-06-10 NIT237 - Jun 10, 20:20 UTCJun 10, 21:25 UTC1h 5m
2026-06-10 NIT237 - Jun 10, 17:10 UTCJun 10, 18:25 UTC1h 15m
2026-06-10 NIT237 - Jun 10, 13:50 UTCJun 10, 14:50 UTC1h 0m
2026-06-10 NIT237 - Jun 10, 09:25 UTCJun 10, 11:00 UTC1h 35m
2026-06-09 NIT237 - Jun 9, 19:25 UTCJun 9, 19:50 UTC25m
2026-06-09 NIT237 - Jun 9, 15:00 UTCJun 9, 15:50 UTC50m
2026-06-09 NIT237 - Jun 9, 12:25 UTCJun 9, 13:15 UTC50m
2026-06-06 NIT237 - Jun 6, 15:34 UTCJun 6, 17:05 UTC1h 30m
2026-06-06 NIT237 - Jun 6, 10:09 UTCJun 6, 11:45 UTC1h 35m
2026-06-04 NIT237 - Jun 4, 18:10 UTCJun 4, 18:25 UTC15m
2026-06-04 NIT237 - Jun 4, 14:50 UTCJun 4, 15:50 UTC1h 0m
2026-05-29 NIT237 - May 29, 14:35 UTCMay 29, 15:10 UTC35m

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 N237MG page for operator, model, and routing details .

Mode-S A2239B frequently asked

What is Mode-S code A2239B?
A2239B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N237MG.
Where is Mode-S A2239B registered?
Mode-S code A2239B 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 A2239B 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 A2239B, octal 50421633, decimal 10,625,947.
What flights does A2239B operate?
Mode-S A2239B has broadcast 1 distinct callsign, including NIT237.