Apparatus

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sensors Mode-S transponder

A83C9B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N63NM · GULFSTREAM 4 · operated by N790CJ LLC

Hex
A83C9B
Octal
52036233
Decimal
11,025,563
Country
US
Tail
N63NM
Type
GLF4
No current signal · last broadcast 2d ago
Flights observed
82
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A83C9B.

Country allocation

The ICAO 24-bit address A83C9B 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
N63NM - 82 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N63NM - Jul 18, 23:10 UTCJul 19, 00:10 UTC1h 0m
2026-07-18 N63NM - Jul 18, 16:25 UTCJul 18, 18:00 UTC1h 35m
2026-07-17 N63NM DSM → PWK Jul 17, 04:39 UTCJul 17, 05:30 UTC50m
2026-07-16 N63NM VNY → DSM Jul 16, 21:55 UTCJul 17, 00:55 UTC3h 0m
2026-07-16 N63NM TEB → VNY Jul 16, 03:55 UTCJul 16, 08:45 UTC4h 50m
2026-07-14 N63NM PWK → TEB Jul 14, 20:35 UTCJul 14, 22:15 UTC1h 40m
2026-07-14 N63NM - Jul 14, 11:55 UTCJul 14, 13:35 UTC1h 40m
2026-07-13 N63NM - Jul 13, 02:50 UTCJul 13, 07:25 UTC4h 35m
2026-07-13 N63NM VNY → LAS Jul 13, 01:01 UTCJul 13, 01:45 UTC45m
2026-07-12 N63NM - Jul 12, 13:10 UTCJul 12, 13:45 UTC35m
2026-07-12 N63NM ANC → SDM Jul 12, 07:31 UTCJul 12, 12:35 UTC5h 5m
2026-07-12 N63NM HIO → ANC Jul 12, 03:45 UTCJul 12, 06:45 UTC3h 0m
2026-07-12 N63NM HSH → HIO Jul 12, 00:30 UTCJul 12, 02:05 UTC1h 35m
2026-07-10 N63NM - Jul 10, 22:25 UTCJul 10, 23:05 UTC40m
2026-07-10 N63NM - Jul 10, 18:20 UTCJul 10, 19:00 UTC40m
2026-07-08 N63NM LAS → HSH Jul 8, 07:20 UTCJul 8, 07:30 UTC10m
2026-07-08 N63NM TEB → LAS Jul 8, 02:15 UTCJul 8, 06:50 UTC4h 35m
2026-07-07 N63NM DAL → TEB Jul 7, 20:25 UTCJul 7, 23:45 UTC3h 20m
2026-07-06 N63NM TEB → DAL Jul 6, 06:55 UTCJul 6, 09:50 UTC2h 55m
2026-07-05 N63NM BGR → TEB Jul 5, 20:45 UTCJul 5, 21:50 UTC1h 5m
2026-06-30 N63NM - Jun 30, 21:25 UTCJul 1, 02:25 UTC5h 0m
2026-06-30 N63NM - Jun 30, 15:15 UTCJun 30, 19:05 UTC3h 50m
2026-06-29 N63NM - Jun 29, 05:20 UTCJun 29, 08:50 UTC3h 30m
2026-06-29 N63NM - Jun 29, 03:39 UTCJun 29, 04:39 UTC1h 0m
2026-06-25 N63NM VNY → CNO Jun 25, 20:54 UTCJun 25, 21:15 UTC20m
2026-06-25 N63NM - Jun 25, 18:04 UTCJun 25, 19:39 UTC1h 35m
2026-06-22 N63NM - Jun 22, 17:44 UTCJun 22, 19:19 UTC1h 35m
2026-06-21 N63NM - Jun 21, 14:59 UTCJun 21, 15:09 UTC10m
2026-06-21 N63NM - Jun 21, 10:34 UTCJun 21, 14:10 UTC3h 35m
2026-06-20 N63NM - Jun 20, 22:39 UTCJun 21, 01:19 UTC2h 40m
2026-06-20 N63NM - Jun 20, 18:19 UTCJun 20, 18:29 UTC10m
2026-06-20 N63NM - Jun 20, 15:24 UTCJun 20, 17:10 UTC1h 45m
2026-06-19 N63NM - Jun 19, 16:49 UTCJun 19, 18:39 UTC1h 50m
2026-06-15 N63NM HSH → TEB Jun 15, 08:25 UTCJun 15, 12:19 UTC3h 55m
2026-06-14 N63NM BUR → HSH Jun 14, 06:55 UTCJun 14, 07:35 UTC40m
2026-06-14 N63NM - Jun 14, 01:50 UTCJun 14, 02:05 UTC15m
2026-06-07 N63NM - Jun 7, 02:45 UTCJun 7, 03:05 UTC20m
2026-06-07 N63NM - Jun 7, 01:35 UTCJun 7, 02:04 UTC30m
2026-06-06 N63NM - Jun 6, 16:30 UTCJun 6, 21:30 UTC5h 0m
2026-06-03 N63NM BBX → TEB Jun 3, 01:35 UTCJun 3, 02:00 UTC25m
2026-06-02 N63NM - Jun 2, 05:05 UTCJun 2, 07:15 UTC2h 10m
2026-06-02 N63NM - Jun 2, 01:50 UTCJun 2, 02:25 UTC35m
2026-06-01 N63NM - Jun 1, 21:15 UTCJun 1, 23:55 UTC2h 40m
2026-06-01 N63NM - Jun 1, 18:20 UTCJun 1, 20:45 UTC2h 25m
2026-05-27 N63NM - May 27, 18:30 UTCMay 27, 18:55 UTC25m
2026-05-27 N63NM - May 27, 17:00 UTCMay 27, 17:50 UTC50m
2026-05-24 N63NM YQG → YYZ May 24, 15:00 UTCMay 24, 15:35 UTC35m
2026-05-24 N63NM - May 24, 10:40 UTCMay 24, 13:10 UTC2h 30m
2026-05-21 N63NM - May 21, 10:40 UTCMay 21, 13:10 UTC2h 30m
2026-05-21 N63NM TEB → PDK May 21, 07:40 UTCMay 21, 09:25 UTC1h 45m

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 N63NM page for operator, model, and routing details .

Mode-S A83C9B frequently asked

What is Mode-S code A83C9B?
A83C9B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N63NM.
Where is Mode-S A83C9B registered?
Mode-S code A83C9B 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 A83C9B broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A83C9B, octal 52036233, decimal 11,025,563.
What flights does A83C9B operate?
Mode-S A83C9B has broadcast 1 distinct callsign, including N63NM.