Apparatus

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sensors Mode-S transponder

A21432

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N233FR · AIRBUS A-320 · operated by UMB BANK NA TRUSTEE

Hex
A21432
Octal
50412062
Decimal
10,622,002
Country
US
Tail
N233FR
Type
A320
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
508
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A21432.

Country allocation

The ICAO 24-bit address A21432 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
FFT1823 - 8 2026-07-17
FFT4726 - 6 2026-07-17
FFT3624 Frontier Airlines 6 2026-07-19
FFT685 - 5 2026-06-20
FFT4794 - 5 2026-07-10
FFT4435 Frontier Airlines 5 2026-06-29
FFT4092 Frontier Airlines 5 2026-05-10
FFT3559 - 5 2026-07-18
FFT1713 - 5 2026-07-13
FFT1432 Frontier Airlines 5 2026-07-23
FFT689 - 4 2026-07-10
FFT4685 - 4 2026-07-18
FFT4091 Frontier Airlines 4 2026-05-10
FFT3560 Frontier Airlines 4 2026-07-18
FFT3312 - 4 2026-07-11
FFT3054 - 4 2026-06-28
FFT2912 - 4 2026-06-29
FFT2818 - 4 2026-06-23
FFT1565 Frontier Airlines 4 2026-07-23
FFT1500 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT3767 RIC → MCO Jul 26, 21:25 UTCJul 26, 22:30 UTC1h 5m
2026-07-26 FFT3768 MCO → RIC Jul 26, 18:00 UTCJul 26, 19:35 UTC1h 35m
2026-07-26 FFT4190 CMH → MCO Jul 26, 14:25 UTCJul 26, 16:05 UTC1h 40m
2026-07-26 FFT1611 BDL → RDU Jul 26, 11:25 UTCJul 26, 13:25 UTC2h 0m
2026-07-25 FFT186 GUA → MCO Jul 25, 22:45 UTCJul 26, 01:05 UTC2h 20m
2026-07-25 FFT187 MCO → GUA Jul 25, 21:00 UTCJul 25, 21:15 UTC15m
2026-07-25 FFT187 MCO → GUA Jul 25, 18:40 UTCJul 25, 20:25 UTC1h 45m
2026-07-25 FFT1056 CLE → MCO Jul 25, 14:30 UTCJul 25, 16:35 UTC2h 5m
2026-07-25 FFT1915 MCO → CLE Jul 25, 10:25 UTCJul 25, 12:35 UTC2h 10m
2026-07-25 FFT1555 CLT → MCO Jul 25, 05:00 UTCJul 25, 06:05 UTC1h 5m
2026-07-25 FFT1556 MCO → CLT Jul 25, 02:40 UTCJul 25, 03:55 UTC1h 15m
2026-07-24 FFT4662 PNS → MCO Jul 24, 21:15 UTCJul 24, 22:15 UTC1h 0m
2026-07-24 FFT4661 MCO → PNS Jul 24, 18:50 UTCJul 24, 19:50 UTC1h 0m
2026-07-24 FFT4454 IND → MCO Jul 24, 15:05 UTCJul 24, 16:55 UTC1h 50m
2026-07-24 FFT3761 MDW → ATL Jul 24, 11:35 UTCJul 24, 13:30 UTC1h 55m
2026-07-24 FFT3761 MDW → ATL Jul 24, 11:38 UTCJul 24, 13:30 UTC1h 52m
2026-07-24 FFT1750 CVG → MCO Jul 24, 03:35 UTCJul 24, 05:10 UTC1h 35m
2026-07-24 FFT3221 ATL → DFW Jul 24, 00:10 UTCJul 24, 02:15 UTC2h 5m
2026-07-23 FFT1318 CVG → RSW Jul 23, 20:30 UTCJul 23, 22:35 UTC2h 5m
2026-07-23 FFT1565 MCO → CVG Jul 23, 17:15 UTCJul 23, 19:05 UTC1h 50m
2026-07-23 FFT1432 MSY → MCO Jul 23, 14:45 UTCJul 23, 16:10 UTC1h 25m
2026-07-23 FFT3553 MCO → MSY Jul 23, 10:10 UTCJul 23, 11:25 UTC1h 15m
2026-07-23 FFT2451 CLT → MCO Jul 23, 02:05 UTCJul 23, 03:05 UTC1h 0m
2026-07-22 FFT3133 PHL → RDU Jul 22, 21:20 UTCJul 22, 23:05 UTC1h 45m
2026-07-22 FFT2432 TPA → CLE Jul 22, 17:50 UTCJul 22, 20:00 UTC2h 10m
2026-07-22 FFT2507 PHL → MCO Jul 22, 14:25 UTCJul 22, 16:30 UTC2h 5m
2026-07-22 FFT1542 MCO → PHL Jul 22, 11:10 UTCJul 22, 12:25 UTC1h 15m
2026-07-22 FFT2280 - Jul 22, 01:50 UTCJul 22, 03:40 UTC1h 50m
2026-07-21 FFT1055 MCO → CLE Jul 21, 21:55 UTCJul 22, 00:20 UTC2h 25m
2026-07-21 FFT1055 MCO → CLE Jul 21, 22:05 UTCJul 22, 00:19 UTC2h 14m
2026-07-21 FFT1432 MSY → MCO Jul 21, 17:50 UTCJul 21, 18:30 UTC40m
2026-07-21 FFT1432 MSY → MCO Jul 21, 17:45 UTCJul 21, 19:17 UTC1h 32m
2026-07-21 FFT3553 - Jul 21, 15:05 UTCJul 21, 16:25 UTC1h 20m
2026-07-21 FFT4556 ATL → MCO Jul 21, 12:10 UTCJul 21, 13:05 UTC55m
2026-07-21 FFT1563 MCO → ATL Jul 21, 09:40 UTCJul 21, 10:40 UTC1h 0m
2026-07-21 FFT2287 - Jul 21, 04:00 UTCJul 21, 05:25 UTC1h 25m
2026-07-21 FFT2287 ORF → MCO Jul 21, 04:00 UTCJul 21, 05:24 UTC1h 24m
2026-07-21 FFT2288 MCO → ORF Jul 21, 01:20 UTCJul 21, 03:00 UTC1h 40m
2026-07-20 FFT2130 - Jul 20, 02:20 UTCJul 20, 03:50 UTC1h 30m
2026-07-19 FFT2129 MCO → MEM Jul 19, 23:05 UTCJul 20, 00:45 UTC1h 40m
2026-07-19 FFT4355 IAD → MCO Jul 19, 17:50 UTCJul 19, 20:05 UTC2h 15m
2026-07-19 FFT4355 IAD → MCO Jul 19, 17:45 UTCJul 19, 20:05 UTC2h 20m
2026-07-19 FFT4230 MCO → IAD Jul 19, 14:40 UTCJul 19, 16:15 UTC1h 35m
2026-07-19 FFT3624 CVG → MCO Jul 19, 11:25 UTCJul 19, 13:00 UTC1h 35m
2026-07-19 FFT1749 MCO → CVG Jul 19, 01:55 UTCJul 19, 03:40 UTC1h 45m
2026-07-19 FFT1749 MCO → CVG Jul 19, 01:37 UTCJul 19, 03:40 UTC2h 3m
2026-07-18 FFT3560 BNA → MCO Jul 18, 22:20 UTCJul 18, 23:55 UTC1h 35m
2026-07-18 FFT3559 - Jul 18, 19:00 UTCJul 18, 20:30 UTC1h 30m
2026-07-18 FFT3559 MCO → BNA Jul 18, 19:02 UTCJul 18, 20:23 UTC1h 21m
2026-07-18 FFT4685 - Jul 18, 16:30 UTCJul 18, 17:20 UTC50m

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 N233FR page for operator, model, and routing details .

Mode-S A21432 frequently asked

What is Mode-S code A21432?
A21432 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N233FR.
Where is Mode-S A21432 registered?
Mode-S code A21432 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 A21432 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A21432, octal 50412062, decimal 10,622,002.
What flights does A21432 operate?
Mode-S A21432 has broadcast 20 distinct callsigns, including FFT1823, FFT4726, FFT3624, FFT685, FFT4794.