Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
Broadcasting now · callsign FFT2836 · 37,025 ft
Flights observed
442
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A83839 is currently broadcasting. Map zoomed to live position.

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
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
FFT2269 - 5 2026-07-14
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
FFT2836 - 4 2026-07-02
FFT228 Frontier Airlines 4 2026-05-28
FFT2178 - 4 2026-07-02
FFT2146 - 4 2026-07-11
FFT1269 Frontier Airlines 4 2026-05-25
FFT4891 Frontier Airlines 3 2026-06-02
FFT4725 - 3 2026-07-13
FFT4455 - 3 2026-07-02
FFT4252 Frontier Airlines 3 2026-06-01
FFT4146 Frontier Airlines 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT2269 PHL → TPA Jul 14, 02:40 UTCJul 14, 05:00 UTC2h 20m
2026-07-14 FFT2269 - Jul 14, 01:55 UTCJul 14, 02:05 UTC10m
2026-07-13 FFT4404 MCO → PHL Jul 13, 23:00 UTCJul 14, 00:55 UTC1h 55m
2026-07-13 FFT4725 - Jul 13, 19:10 UTCJul 13, 20:00 UTC50m
2026-07-13 FFT4725 - Jul 13, 17:30 UTCJul 13, 17:40 UTC10m
2026-07-13 FFT4725 SJU → MCO Jul 13, 17:23 UTCJul 13, 19:56 UTC2h 33m
2026-07-13 FFT2250 - Jul 13, 14:50 UTCJul 13, 15:10 UTC20m
2026-07-13 FFT2250 - Jul 13, 12:45 UTCJul 13, 13:15 UTC30m
2026-07-13 FFT2250 MCO → SJU Jul 13, 12:28 UTCJul 13, 15:08 UTC2h 40m
2026-07-13 FFT2280 - Jul 13, 03:10 UTCJul 13, 05:05 UTC1h 55m
2026-07-12 FFT1055 MCO → CLE Jul 12, 23:40 UTCJul 13, 01:45 UTC2h 5m
2026-07-12 FFT1111 - Jul 12, 20:25 UTCJul 12, 21:40 UTC1h 15m
2026-07-12 FFT1111 RDU → MCO Jul 12, 20:05 UTCJul 12, 21:40 UTC1h 35m
2026-07-12 FFT1742 - Jul 12, 15:35 UTCJul 12, 17:45 UTC2h 10m
2026-07-12 FFT1417 - Jul 12, 12:05 UTCJul 12, 14:05 UTC2h 0m
2026-07-12 FFT1876 - Jul 12, 06:05 UTCJul 12, 10:15 UTC4h 10m
2026-07-12 FFT2017 STL → LAS Jul 12, 01:00 UTCJul 12, 03:55 UTC2h 55m
2026-07-11 FFT3108 LAS → STL Jul 11, 21:00 UTCJul 11, 23:45 UTC2h 45m
2026-07-11 FFT2145 PHL → LAS Jul 11, 16:20 UTCJul 11, 19:25 UTC3h 5m
2026-07-11 FFT2146 LAS → ORD Jul 11, 07:20 UTCJul 11, 10:25 UTC3h 5m
2026-07-11 FFT3417 - Jul 11, 03:35 UTCJul 11, 05:45 UTC2h 10m
2026-07-11 FFT3417 SAT → LAS Jul 11, 03:35 UTCJul 11, 05:45 UTC2h 10m
2026-07-11 FFT3418 - Jul 11, 00:05 UTCJul 11, 02:25 UTC2h 20m
2026-07-10 FFT4131 - Jul 10, 18:30 UTCJul 10, 21:05 UTC2h 35m
2026-07-10 FFT4131 IAH → LAS Jul 10, 18:30 UTCJul 10, 21:03 UTC2h 33m
2026-07-10 FFT1490 - Jul 10, 14:30 UTCJul 10, 17:05 UTC2h 35m
2026-07-10 FFT3417 - Jul 10, 02:40 UTCJul 10, 04:55 UTC2h 15m
2026-07-09 FFT3418 - Jul 9, 23:00 UTCJul 10, 01:20 UTC2h 20m
2026-07-09 FFT4244 - Jul 9, 20:20 UTCJul 9, 21:10 UTC50m
2026-07-09 FFT4243 - Jul 9, 18:00 UTCJul 9, 18:55 UTC55m
2026-07-09 FFT2145 PHL → LAS Jul 9, 13:00 UTCJul 9, 14:10 UTC1h 10m
2026-07-09 FFT2145 PHL → LAS Jul 9, 12:30 UTCJul 9, 16:10 UTC3h 40m
2026-07-09 FFT2146 LAS → ORD Jul 9, 07:35 UTCJul 9, 10:45 UTC3h 10m
2026-07-09 FFT2146 LAS → ORD Jul 9, 07:20 UTCJul 9, 10:39 UTC3h 19m
2026-07-09 FFT4402 - Jul 9, 05:05 UTCJul 9, 06:10 UTC1h 5m
2026-07-09 FFT3801 LAS → SFO Jul 9, 02:15 UTCJul 9, 03:30 UTC1h 15m
2026-07-08 FFT3626 - Jul 8, 21:50 UTCJul 8, 22:45 UTC55m
2026-07-08 FFT3625 - Jul 8, 19:45 UTCJul 8, 20:40 UTC55m
2026-07-08 FFT2145 PHL → LAS Jul 8, 15:10 UTCJul 8, 18:20 UTC3h 10m
2026-07-08 FFT2446 - Jul 8, 07:45 UTCJul 8, 11:20 UTC3h 35m
2026-07-08 FFT1183 LAS → LAX Jul 8, 02:30 UTCJul 8, 03:15 UTC45m
2026-07-07 FFT1466 SAN → LAS Jul 7, 22:20 UTCJul 7, 23:10 UTC50m
2026-07-07 FFT1325 LAS → SAN Jul 7, 20:10 UTCJul 7, 20:55 UTC45m
2026-07-07 FFT1993 DEN → LAS Jul 7, 16:25 UTCJul 7, 17:50 UTC1h 25m
2026-07-07 FFT1993 DEN → LAS Jul 7, 16:13 UTCJul 7, 17:45 UTC1h 32m
2026-07-07 FFT2350 LAS → DEN Jul 7, 13:15 UTCJul 7, 14:40 UTC1h 25m
2026-07-07 FFT3521 - Jul 7, 01:35 UTCJul 7, 05:00 UTC3h 25m
2026-07-06 FFT3412 LAS → CVG Jul 6, 20:30 UTCJul 6, 23:55 UTC3h 25m
2026-07-06 FFT1875 - Jul 6, 14:40 UTCJul 6, 18:45 UTC4h 5m
2026-07-06 FFT2309 BWI → MCO Jul 6, 10:55 UTCJul 6, 12:45 UTC1h 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 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?
Yes. Mode-S A83839 is currently airborne.
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 FFT2145, FFT9529, FFT3735, FFT3340, FFT2269.