Apparatus

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sensors Mode-S transponder

A83839

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N629FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A83839
Octal
52034071
Decimal
11,024,441
Country
US
Tail
N629FR
Type
A21N
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
506
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A83839.

Country allocation

The ICAO 24-bit address A83839 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
FFT2269 Frontier Airlines 7 2026-07-17
FFT2836 Frontier Airlines 6 2026-07-18
FFT2145 Frontier Airlines 6 2026-07-11
FFT9529 Frontier Airlines 5 2026-05-10
FFT3735 Frontier Airlines 5 2026-05-17
FFT3340 Frontier Airlines 5 2026-06-09
FFT2609 - 5 2026-07-16
FFT1733 Frontier Airlines 5 2026-05-06
FFT1015 - 5 2026-06-27
FFT4732 - 4 2026-06-23
FFT3736 Frontier Airlines 4 2026-05-17
FFT3417 - 4 2026-07-11
FFT2932 - 4 2026-07-17
FFT2499 - 4 2026-07-15
FFT228 Frontier Airlines 4 2026-05-28
FFT2178 - 4 2026-07-02
FFT2146 - 4 2026-07-11
FFT1269 Frontier Airlines 4 2026-05-25
FFT1080 Frontier Airlines 4 2026-07-19
FFT4891 Frontier Airlines 3 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT71 CUN → DEN Jul 26, 20:40 UTCJul 26, 22:15 UTC1h 35m
2026-07-26 FFT316 IAH → CUN Jul 26, 17:25 UTCJul 26, 19:20 UTC1h 55m
2026-07-26 FFT3206 DEN → IAH Jul 26, 13:25 UTCJul 26, 15:20 UTC1h 55m
2026-07-26 FFT3440 SFO → DEN Jul 26, 06:00 UTCJul 26, 07:55 UTC1h 56m
2026-07-26 FFT1093 ISP → MCO Jul 26, 02:25 UTCJul 26, 04:40 UTC2h 15m
2026-07-25 FFT71 CUN → DEN Jul 25, 20:50 UTCJul 26, 00:10 UTC3h 20m
2026-07-25 FFT316 IAH → CUN Jul 25, 17:00 UTCJul 25, 18:50 UTC1h 50m
2026-07-25 FFT3206 DEN → IAH Jul 25, 13:15 UTCJul 25, 15:05 UTC1h 50m
2026-07-25 FFT1994 LAS → DEN Jul 25, 02:35 UTCJul 25, 04:00 UTC1h 25m
2026-07-24 FFT2349 DEN → LAS Jul 24, 23:30 UTCJul 25, 00:55 UTC1h 25m
2026-07-24 FFT2047 AUS → DEN Jul 24, 20:25 UTCJul 24, 22:10 UTC1h 45m
2026-07-24 FFT1816 DEN → AUS Jul 24, 16:40 UTCJul 24, 18:25 UTC1h 45m
2026-07-24 FFT2211 DTW → DEN Jul 24, 11:50 UTCJul 24, 14:20 UTC2h 30m
2026-07-24 FFT4186 DEN → DTW Jul 24, 01:35 UTCJul 24, 03:50 UTC2h 15m
2026-07-23 FFT1113 TPA → DEN Jul 23, 16:55 UTCJul 23, 20:05 UTC3h 10m
2026-07-23 FFT2748 DEN → TPA Jul 23, 12:25 UTCJul 23, 15:30 UTC3h 5m
2026-07-23 FFT3725 CVG → DEN Jul 23, 03:10 UTCJul 23, 05:45 UTC2h 35m
2026-07-22 FFT3286 DEN → CVG Jul 22, 21:05 UTCJul 22, 23:15 UTC2h 10m
2026-07-22 FFT4346 LAX → DEN Jul 22, 17:20 UTCJul 22, 19:30 UTC2h 10m
2026-07-22 FFT3155 DEN → LAX Jul 22, 13:45 UTCJul 22, 15:35 UTC1h 50m
2026-07-22 FFT3599 ATL → DEN Jul 22, 01:50 UTCJul 22, 04:30 UTC2h 40m
2026-07-21 FFT24 PUJ → ATL Jul 21, 16:00 UTCJul 22, 00:00 UTC8h 0m
2026-07-21 FFT1241 MCO → ATL Jul 21, 12:05 UTCJul 21, 13:05 UTC1h 0m
2026-07-21 FFT1242 ATL → MCO Jul 21, 09:15 UTCJul 21, 10:15 UTC1h 0m
2026-07-21 FFT3013 FLL → ATL Jul 21, 03:30 UTCJul 21, 04:50 UTC1h 20m
2026-07-20 FFT2959 IAD → FLL Jul 20, 23:30 UTCJul 21, 01:50 UTC2h 19m
2026-07-20 FFT4410 ATL → IAD Jul 20, 19:25 UTCJul 20, 20:50 UTC1h 25m
2026-07-20 FFT3071 - Jul 20, 16:25 UTCJul 20, 17:50 UTC1h 25m
2026-07-20 FFT3072 ATL → ORF Jul 20, 13:40 UTCJul 20, 14:55 UTC1h 15m
2026-07-20 FFT4873 FLL → ATL Jul 20, 10:20 UTCJul 20, 11:45 UTC1h 25m
2026-07-20 FFT2174 ATL → FLL Jul 20, 04:00 UTCJul 20, 05:20 UTC1h 20m
2026-07-19 FFT1079 - Jul 19, 23:55 UTCJul 20, 01:15 UTC1h 20m
2026-07-19 FFT1080 ATL → BWI Jul 19, 21:10 UTCJul 19, 22:30 UTC1h 20m
2026-07-19 FFT3511 BOS → ATL Jul 19, 16:30 UTCJul 19, 19:20 UTC2h 50m
2026-07-19 FFT3512 ATL → BOS Jul 19, 12:35 UTCJul 19, 14:55 UTC2h 20m
2026-07-19 FFT2428 LAS → ATL Jul 19, 07:15 UTCJul 19, 10:45 UTC3h 30m
2026-07-19 FFT3449 - Jul 19, 02:35 UTCJul 19, 03:40 UTC1h 5m
2026-07-18 FFT3450 - Jul 18, 23:45 UTCJul 19, 01:10 UTC1h 25m
2026-07-18 FFT3450 LAS → ELP Jul 18, 23:35 UTCJul 19, 01:20 UTC1h 45m
2026-07-18 FFT1601 PHL → LAS Jul 18, 16:25 UTCJul 18, 20:50 UTC4h 25m
2026-07-18 FFT2836 TPA → PHL Jul 18, 02:40 UTCJul 18, 04:45 UTC2h 6m
2026-07-17 FFT2269 LGA → ATL Jul 17, 23:00 UTCJul 18, 01:05 UTC2h 5m
2026-07-17 FFT2269 LGA → ATL Jul 17, 22:45 UTCJul 17, 22:49 UTC5m
2026-07-17 FFT2932 - Jul 17, 18:10 UTCJul 17, 20:29 UTC2h 20m
2026-07-17 FFT2007 - Jul 17, 13:29 UTCJul 17, 15:55 UTC2h 25m
2026-07-17 FFT2021 - Jul 17, 10:44 UTCJul 17, 12:00 UTC1h 15m
2026-07-17 FFT2021 PHL → PHL Jul 17, 10:00 UTCJul 17, 10:05 UTC5m
2026-07-17 FFT2816 JAX → PHL Jul 17, 01:59 UTCJul 17, 03:50 UTC1h 50m
2026-07-16 FFT2815 PHL → JAX Jul 16, 22:45 UTCJul 17, 00:25 UTC1h 40m
2026-07-16 FFT2022 - Jul 16, 18:59 UTCJul 16, 20:05 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 N629FR page for operator, model, and routing details .

Mode-S A83839 frequently asked

What is Mode-S code A83839?
A83839 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N629FR.
Where is Mode-S A83839 registered?
Mode-S code A83839 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 A83839 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A83839, octal 52034071, decimal 11,024,441.
What flights does A83839 operate?
Mode-S A83839 has broadcast 20 distinct callsigns, including FFT2269, FFT2836, FFT2145, FFT9529, FFT3735.