Apparatus

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sensors Mode-S transponder

A84200

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N631FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A84200
Octal
52041000
Decimal
11,026,944
Country
US
Tail
N631FR
Type
A21N
No current signal · last broadcast 6d ago
Flights observed
416
Distinct callsigns
20
Country
US
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S A84200.

Country allocation

The ICAO 24-bit address A84200 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 20 distinct

Callsign Airline Flights Last seen
FFT4315 Frontier Airlines 8 2026-06-27
FFT9431 - 5 2026-06-23
FFT4316 - 5 2026-06-27
FFT3241 Frontier Airlines 4 2026-06-12
FFT2836 - 4 2026-06-22
FFT2173 Frontier Airlines 4 2026-04-16
FFT1516 Frontier Airlines 4 2026-05-22
FFT1441 Frontier Airlines 4 2026-06-12
FFT1177 - 4 2026-06-28
FFT71 - 3 2026-07-02
FFT4545 - 3 2026-06-28
FFT4211 Frontier Airlines 3 2026-06-05
FFT4075 Frontier Airlines 3 2026-05-21
FFT3873 Frontier Airlines 3 2026-06-11
FFT3363 Frontier Airlines 3 2026-05-22
FFT3299 Frontier Airlines 3 2026-06-14
FFT3206 - 3 2026-07-02
FFT316 - 3 2026-07-02
FFT3135 Frontier Airlines 3 2026-06-13
FFT3085 Frontier Airlines 3 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 FFT2635 MCO → STL Jul 8, 02:50 UTCJul 8, 04:40 UTC1h 50m
2026-07-07 FFT3767 - Jul 7, 21:55 UTCJul 7, 23:35 UTC1h 40m
2026-07-07 FFT3768 - Jul 7, 18:35 UTCJul 7, 20:15 UTC1h 40m
2026-07-07 FFT3508 ATL → MCO Jul 7, 02:55 UTCJul 7, 03:55 UTC1h 0m
2026-07-06 FFT1407 - Jul 6, 20:30 UTCJul 6, 22:10 UTC1h 40m
2026-07-06 FFT1408 ATL → BUF Jul 6, 17:30 UTCJul 6, 19:00 UTC1h 30m
2026-07-06 FFT1563 - Jul 6, 14:25 UTCJul 6, 15:25 UTC1h 0m
2026-07-06 FFT1242 ATL → MCO Jul 6, 11:45 UTCJul 6, 12:55 UTC1h 10m
2026-07-05 FFT125 ATL → ATL Jul 5, 14:40 UTCJul 5, 21:25 UTC6h 45m
2026-07-05 FFT2551 PHL → ATL Jul 5, 10:46 UTCJul 5, 12:12 UTC1h 26m
2026-07-05 FFT2508 - Jul 5, 03:20 UTCJul 5, 05:15 UTC1h 55m
2026-07-04 FFT1734 DEN → MCO Jul 4, 19:55 UTCJul 4, 23:15 UTC3h 20m
2026-07-04 FFT1230 MCO → GRB Jul 4, 13:13 UTCJul 4, 15:05 UTC1h 52m
2026-07-04 FFT1230 MCO → GRB Jul 4, 13:05 UTCJul 4, 15:05 UTC2h 0m
2026-07-04 FFT3439 DEN → SFO Jul 4, 04:45 UTCJul 4, 07:00 UTC2h 15m
2026-07-03 FFT1581 - Jul 3, 22:45 UTCJul 4, 02:05 UTC3h 20m
2026-07-03 FFT1582 - Jul 3, 18:35 UTCJul 3, 21:35 UTC3h 0m
2026-07-03 FFT4968 LAS → DEN Jul 3, 15:30 UTCJul 3, 16:50 UTC1h 20m
2026-07-03 FFT2015 DEN → LAS Jul 3, 12:23 UTCJul 3, 14:11 UTC1h 48m
2026-07-03 FFT2015 - Jul 3, 12:40 UTCJul 3, 14:00 UTC1h 20m
2026-07-02 FFT71 CUN → DEN Jul 2, 21:35 UTCJul 3, 01:15 UTC3h 40m
2026-07-02 FFT316 - Jul 2, 17:00 UTCJul 2, 17:25 UTC25m
2026-07-02 FFT316 IAH → CUN Jul 2, 17:05 UTCJul 2, 18:53 UTC1h 48m
2026-07-02 FFT3206 - Jul 2, 13:10 UTCJul 2, 15:10 UTC2h 0m
2026-07-02 FFT3206 DEN → IAH Jul 2, 13:13 UTCJul 2, 15:07 UTC1h 54m
2026-07-02 FFT2016 - Jul 2, 08:05 UTCJul 2, 09:25 UTC1h 20m
2026-07-02 FFT777 DEN → LAS Jul 2, 04:50 UTCJul 2, 06:20 UTC1h 30m
2026-07-02 FFT777 DEN → LAS Jul 2, 04:42 UTCJul 2, 06:20 UTC1h 38m
2026-07-01 FFT71 - Jul 1, 20:45 UTCJul 2, 00:20 UTC3h 35m
2026-07-01 FFT71 CUN → DEN Jul 1, 20:50 UTCJul 2, 00:15 UTC3h 25m
2026-07-01 FFT316 - Jul 1, 17:05 UTCJul 1, 19:00 UTC1h 55m
2026-07-01 FFT3206 - Jul 1, 13:15 UTCJul 1, 15:15 UTC2h 0m
2026-07-01 FFT4252 SLC → DEN Jul 1, 05:05 UTCJul 1, 06:05 UTC1h 0m
2026-07-01 FFT4251 DEN → SLC Jul 1, 02:45 UTCJul 1, 03:50 UTC1h 5m
2026-06-30 FFT3406 SEA → DEN Jun 30, 22:55 UTCJul 1, 01:20 UTC2h 25m
2026-06-30 FFT1175 - Jun 30, 18:35 UTCJun 30, 20:55 UTC2h 20m
2026-06-30 FFT1175 DEN → SEA Jun 30, 18:27 UTCJun 30, 20:54 UTC2h 27m
2026-06-30 FFT3156 - Jun 30, 13:40 UTCJun 30, 15:25 UTC1h 45m
2026-06-30 FFT4345 - Jun 30, 04:45 UTCJun 30, 06:55 UTC2h 10m
2026-06-30 FFT3707 - Jun 30, 01:00 UTCJun 30, 02:45 UTC1h 46m
2026-06-29 FFT2356 RSW → PHL Jun 29, 21:44 UTCJun 29, 23:29 UTC1h 45m
2026-06-29 FFT2225 - Jun 29, 16:35 UTCJun 29, 19:49 UTC3h 15m
2026-06-29 FFT2440 DEN → RDU Jun 29, 12:09 UTCJun 29, 15:14 UTC3h 5m
2026-06-29 FFT1176 SEA → DEN Jun 29, 02:54 UTCJun 29, 05:15 UTC2h 20m
2026-06-28 FFT1177 - Jun 28, 22:29 UTCJun 29, 01:00 UTC2h 30m
2026-06-28 FFT1178 - Jun 28, 18:44 UTCJun 28, 20:45 UTC2h 0m
2026-06-28 FFT4545 DEN → SEA Jun 28, 13:55 UTCJun 28, 16:14 UTC2h 20m
2026-06-28 FFT3599 ATL → DEN Jun 28, 03:14 UTCJun 28, 05:55 UTC2h 40m
2026-06-27 FFT4316 - Jun 27, 21:29 UTCJun 28, 01:15 UTC3h 45m
2026-06-27 FFT4315 ATL → LAX Jun 27, 16:10 UTCJun 27, 19:59 UTC3h 50m

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 N631FR page for operator, model, and routing details .

Mode-S A84200 frequently asked

What is Mode-S code A84200?
A84200 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N631FR.
Where is Mode-S A84200 registered?
Mode-S code A84200 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 A84200 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84200, octal 52041000, decimal 11,026,944.
What flights does A84200 operate?
Mode-S A84200 has broadcast 20 distinct callsigns, including FFT4315, FFT9431, FFT4316, FFT3241, FFT2836.