Apparatus

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sensors Mode-S transponder

A43458

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N370FR · AIRBUS A-320neo · operated by UMB BANK NA TRUSTEE

Hex
A43458
Octal
51032130
Decimal
10,761,304
Country
US
Tail
N370FR
Type
A20N
Broadcasting now · callsign FFT689 · 31,975 ft
Flights observed
481
Distinct callsigns
20
Country
US
Last broadcast
23m ago

Current position

A43458 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A43458 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
FFT1832 Frontier Airlines 13 2026-05-20
FFT1831 Frontier Airlines 10 2026-05-19
FFT4602 Frontier Airlines 6 2026-06-12
FFT3923 - 6 2026-06-30
FFT3417 - 6 2026-07-03
FFT2409 Frontier Airlines 6 2026-05-18
FFT3074 Frontier Airlines 5 2026-05-18
FFT2867 Frontier Airlines 5 2026-06-04
FFT2575 - 5 2026-07-02
FFT2349 Frontier Airlines 5 2026-04-17
FFT1116 Frontier Airlines 5 2026-06-28
FFT687 - 4 2026-07-05
FFT4601 Frontier Airlines 4 2026-06-12
FFT3581 - 4 2026-06-20
FFT3540 Frontier Airlines 4 2026-04-18
FFT3418 - 4 2026-07-02
FFT3107 - 4 2026-06-26
FFT3073 Frontier Airlines 4 2026-05-18
FFT2982 Frontier Airlines 4 2026-06-04
FFT2677 - 4 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT689 - Jul 14, 22:25 UTCJul 15, 00:00 UTC1h 34m
2026-07-14 FFT688 DEN → DCA Jul 14, 17:50 UTCJul 14, 21:00 UTC3h 10m
2026-07-14 FFT2549 DFW → DEN Jul 14, 15:05 UTCJul 14, 16:35 UTC1h 30m
2026-07-14 FFT2148 DEN → DFW Jul 14, 00:10 UTCJul 14, 01:35 UTC1h 25m
2026-07-13 FFT1863 OKC → DEN Jul 13, 21:15 UTCJul 13, 22:25 UTC1h 10m
2026-07-13 FFT1928 DEN → OKC Jul 13, 18:30 UTCJul 13, 19:45 UTC1h 15m
2026-07-13 FFT4768 - Jul 13, 15:45 UTCJul 13, 17:05 UTC1h 20m
2026-07-13 FFT1747 DEN → PHX Jul 13, 13:00 UTCJul 13, 14:25 UTC1h 25m
2026-07-13 FFT1747 DEN → PHX Jul 13, 12:58 UTCJul 13, 14:23 UTC1h 25m
2026-07-13 FFT4069 - Jul 13, 06:01 UTCJul 13, 07:35 UTC1h 35m
2026-07-13 FFT2148 DEN → DFW Jul 13, 02:20 UTCJul 13, 03:45 UTC1h 25m
2026-07-12 FFT1863 OKC → DEN Jul 12, 20:50 UTCJul 12, 22:05 UTC1h 15m
2026-07-12 FFT1928 DEN → OKC Jul 12, 18:35 UTCJul 12, 19:45 UTC1h 10m
2026-07-12 FFT1928 DEN → OKC Jul 12, 18:36 UTCJul 12, 19:40 UTC1h 4m
2026-07-12 FFT4768 PHX → DEN Jul 12, 15:50 UTCJul 12, 17:20 UTC1h 30m
2026-07-12 FFT4753 DEN → PHX Jul 12, 05:10 UTCJul 12, 06:30 UTC1h 20m
2026-07-12 FFT4543 - Jul 12, 01:40 UTCJul 12, 03:15 UTC1h 35m
2026-07-11 FFT4386 - Jul 11, 23:15 UTCJul 12, 00:40 UTC1h 25m
2026-07-11 FFT4386 DEN → CID Jul 11, 23:05 UTCJul 12, 00:38 UTC1h 33m
2026-07-11 FFT4793 FAR → DEN Jul 11, 20:47 UTCJul 11, 22:01 UTC1h 14m
2026-07-11 FFT4794 DEN → FAR Jul 11, 18:20 UTCJul 11, 19:40 UTC1h 20m
2026-07-11 FFT4794 DEN → FAR Jul 11, 17:48 UTCJul 11, 19:39 UTC1h 51m
2026-07-11 FFT3862 - Jul 11, 15:00 UTCJul 11, 16:00 UTC1h 0m
2026-07-11 FFT3219 DEN → SLC Jul 11, 12:10 UTCJul 11, 13:15 UTC1h 5m
2026-07-11 FFT1361 - Jul 11, 02:25 UTCJul 11, 05:25 UTC3h 0m
2026-07-10 FFT1362 - Jul 10, 22:20 UTCJul 11, 01:00 UTC2h 40m
2026-07-10 FFT3666 SMF → DEN Jul 10, 18:40 UTCJul 10, 20:30 UTC1h 50m
2026-07-10 FFT3665 - Jul 10, 15:15 UTCJul 10, 17:20 UTC2h 5m
2026-07-10 FFT3665 DEN → SMF Jul 10, 15:14 UTCJul 10, 17:17 UTC2h 3m
2026-07-10 FFT3229 - Jul 10, 11:40 UTCJul 10, 13:35 UTC1h 55m
2026-07-10 FFT2996 - Jul 10, 03:40 UTCJul 10, 05:30 UTC1h 50m
2026-07-09 FFT4418 DEN → DEN Jul 9, 21:40 UTCJul 10, 01:55 UTC4h 15m
2026-07-09 FFT2908 - Jul 9, 17:55 UTCJul 9, 19:50 UTC1h 55m
2026-07-09 FFT2907 DEN → ONT Jul 9, 14:50 UTCJul 9, 16:45 UTC1h 55m
2026-07-09 FFT1815 AUS → DEN Jul 9, 11:35 UTCJul 9, 13:25 UTC1h 50m
2026-07-09 FFT2890 DEN → AUS Jul 9, 03:38 UTCJul 9, 05:39 UTC2h 1m
2026-07-09 FFT2890 DEN → AUS Jul 9, 04:05 UTCJul 9, 05:40 UTC1h 35m
2026-07-09 FFT2631 DFW → DEN Jul 9, 00:30 UTCJul 9, 02:15 UTC1h 45m
2026-07-08 FFT4070 - Jul 8, 21:10 UTCJul 8, 22:00 UTC50m
2026-07-08 FFT4070 DEN → DFW Jul 8, 21:08 UTCJul 8, 22:34 UTC1h 26m
2026-07-08 FFT1401 - Jul 8, 17:30 UTCJul 8, 19:45 UTC2h 15m
2026-07-08 FFT1402 DEN → BNA Jul 8, 14:10 UTCJul 8, 16:20 UTC2h 10m
2026-07-08 FFT2347 - Jul 8, 01:20 UTCJul 8, 03:35 UTC2h 15m
2026-07-08 FFT2347 IND → DEN Jul 8, 01:21 UTCJul 8, 03:34 UTC2h 13m
2026-07-07 FFT2348 DEN → IND Jul 7, 22:00 UTCJul 8, 00:20 UTC2h 20m
2026-07-07 FFT3982 DEN → DCA Jul 7, 19:20 UTCJul 7, 20:25 UTC1h 5m
2026-07-07 FFT3219 PHL → FLL Jul 7, 16:55 UTCJul 7, 17:55 UTC1h 0m
2026-07-07 FFT1230 MCO → GRB Jul 7, 13:10 UTCJul 7, 15:05 UTC1h 55m
2026-07-07 FFT3439 DEN → SFO Jul 7, 04:40 UTCJul 7, 07:00 UTC2h 20m
2026-07-06 FFT1581 - Jul 6, 23:00 UTCJul 7, 02:10 UTC3h 10m

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 N370FR page for operator, model, and routing details .

Mode-S A43458 frequently asked

What is Mode-S code A43458?
A43458 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N370FR.
Where is Mode-S A43458 registered?
Mode-S code A43458 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 A43458 broadcasting right now?
Yes. Mode-S A43458 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A43458, octal 51032130, decimal 10,761,304.
What flights does A43458 operate?
Mode-S A43458 has broadcast 20 distinct callsigns, including FFT1832, FFT1831, FFT4602, FFT3923, FFT3417.