Apparatus

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sensors Mode-S transponder

A53287

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N434FR · AIRBUS A-320neo · operated by FRONTIER AIRLINES INC.

Hex
A53287
Octal
51231207
Decimal
10,826,375
Country
US
Tail
N434FR
Type
A20N
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
582
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A53287.

Country allocation

The ICAO 24-bit address A53287 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 2026-06-26
FFT4726 Frontier Airlines 7 2026-05-29
FFT4420 Frontier Airlines 7 2026-05-13
FFT4419 Frontier Airlines 6 2026-05-13
FFT3004 - 6 2026-06-29
FFT2695 - 6 2026-06-29
FFT3971 - 5 2026-07-16
FFT2532 - 5 2026-07-16
FFT1820 - 5 2026-07-18
FFT1746 - 5 2026-06-28
FFT4828 Frontier Airlines 4 2026-07-25
FFT4567 Frontier Airlines 4 2026-07-25
FFT4462 Frontier Airlines 4 2026-05-05
FFT4406 - 4 2026-07-07
FFT4372 Frontier Airlines 4 2026-07-19
FFT3871 - 4 2026-07-17
FFT3393 - 4 2026-07-17
FFT3375 Frontier Airlines 4 2026-07-25
FFT3075 - 4 2026-07-14
FFT2982 Frontier Airlines 4 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT1248 DEN → GRR Jul 26, 21:30 UTCJul 26, 21:45 UTC15m
2026-07-26 FFT2908 ONT → DEN Jul 26, 18:05 UTCJul 26, 19:50 UTC1h 45m
2026-07-26 FFT2907 DEN → ONT Jul 26, 14:55 UTCJul 26, 16:40 UTC1h 45m
2026-07-26 FFT2907 DEN → ONT Jul 26, 14:58 UTCJul 26, 16:40 UTC1h 42m
2026-07-26 FFT1815 AUS → DEN Jul 26, 11:45 UTCJul 26, 13:25 UTC1h 40m
2026-07-26 FFT2890 LAS → TPA Jul 26, 03:00 UTCJul 26, 04:45 UTC1h 45m
2026-07-26 FFT1927 OKC → DEN Jul 26, 00:20 UTCJul 26, 01:35 UTC1h 15m
2026-07-25 FFT1928 DEN → OKC Jul 25, 22:10 UTCJul 25, 23:15 UTC1h 5m
2026-07-25 FFT3375 MCI → DEN Jul 25, 18:55 UTCJul 25, 20:15 UTC1h 20m
2026-07-25 FFT4828 DEN → MCI Jul 25, 16:30 UTCJul 25, 17:40 UTC1h 10m
2026-07-25 FFT1500 ONT → DEN Jul 25, 13:00 UTCJul 25, 14:50 UTC1h 50m
2026-07-25 FFT1261 DEN → ONT Jul 25, 04:45 UTCJul 25, 06:35 UTC1h 50m
2026-07-25 FFT4567 STL → DEN Jul 25, 01:25 UTCJul 25, 03:10 UTC1h 45m
2026-07-25 FFT4567 STL → DEN Jul 25, 01:20 UTCJul 25, 03:09 UTC1h 49m
2026-07-24 FFT3302 DEN → STL Jul 24, 22:40 UTCJul 25, 00:15 UTC1h 35m
2026-07-24 FFT3375 MCI → DEN Jul 24, 19:00 UTCJul 24, 20:20 UTC1h 20m
2026-07-24 FFT4828 DEN → MCI Jul 24, 16:40 UTCJul 24, 17:50 UTC1h 10m
2026-07-24 FFT1500 ONT → DEN Jul 24, 13:10 UTCJul 24, 14:55 UTC1h 45m
2026-07-24 FFT1261 DEN → ONT Jul 24, 05:00 UTCJul 24, 06:50 UTC1h 50m
2026-07-24 FFT4346 LAX → DEN Jul 24, 01:05 UTCJul 24, 03:00 UTC1h 55m
2026-07-23 FFT2341 RDU → ATL Jul 23, 21:50 UTCJul 23, 23:50 UTC2h 0m
2026-07-23 FFT2513 GRR → TPA Jul 23, 16:55 UTCJul 23, 20:35 UTC3h 40m
2026-07-23 FFT2514 DEN → PHL Jul 23, 12:15 UTCJul 23, 15:20 UTC3h 5m
2026-07-23 FFT2514 DEN → PHL Jul 23, 12:18 UTCJul 23, 15:19 UTC3h 1m
2026-07-23 FFT1149 MSP → DEN Jul 23, 06:38 UTCJul 23, 07:35 UTC57m
2026-07-23 FFT1149 MSP → DEN Jul 23, 06:05 UTCJul 23, 06:20 UTC15m
2026-07-23 FFT1292 DEN → MSP Jul 23, 03:50 UTCJul 23, 05:15 UTC1h 25m
2026-07-23 FFT3982 DEN → DCA Jul 23, 01:40 UTCJul 23, 02:40 UTC1h 0m
2026-07-22 FFT3981 DEN → SLC Jul 22, 19:20 UTCJul 22, 20:25 UTC1h 5m
2026-07-22 FFT1815 AUS → DEN Jul 22, 14:15 UTCJul 22, 15:55 UTC1h 40m
2026-07-22 FFT2890 LAS → TPA Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-22 FFT2890 LAS → TPA Jul 22, 03:28 UTCJul 22, 05:23 UTC1h 55m
2026-07-21 FFT4463 DFW → DEN Jul 21, 21:50 UTCJul 21, 23:25 UTC1h 35m
2026-07-21 FFT4463 DFW → DEN Jul 21, 21:45 UTCJul 21, 23:19 UTC1h 34m
2026-07-21 FFT4070 DEN → DFW Jul 21, 18:40 UTCJul 21, 20:10 UTC1h 30m
2026-07-21 FFT1230 MCO → GRB Jul 21, 14:45 UTCJul 21, 16:50 UTC2h 5m
2026-07-21 FFT3439 DEN → SFO Jul 21, 05:30 UTCJul 21, 07:30 UTC2h 0m
2026-07-21 FFT2347 PHL → PBI Jul 21, 01:10 UTCJul 21, 03:30 UTC2h 20m
2026-07-20 FFT2348 DEN → IND Jul 20, 21:55 UTCJul 21, 00:00 UTC2h 5m
2026-07-20 FFT3565 DTW → DEN Jul 20, 17:55 UTCJul 20, 20:25 UTC2h 30m
2026-07-20 FFT3566 DEN → DTW Jul 20, 14:00 UTCJul 20, 16:20 UTC2h 20m
2026-07-20 F9MX434 DEN → DEN Jul 20, 07:35 UTCJul 20, 07:45 UTC10m
2026-07-20 FFT4567 STL → DEN Jul 20, 01:25 UTCJul 20, 03:10 UTC1h 45m
2026-07-19 FFT3302 DEN → STL Jul 19, 22:30 UTCJul 20, 00:10 UTC1h 40m
2026-07-19 FFT4372 SNA → DEN Jul 19, 18:35 UTCJul 19, 20:35 UTC2h 0m
2026-07-19 FFT4371 - Jul 19, 15:05 UTCJul 19, 16:50 UTC1h 45m
2026-07-19 FFT3220 SLC → DEN Jul 19, 12:15 UTCJul 19, 13:10 UTC55m
2026-07-19 FFT4251 DEN → SLC Jul 19, 04:25 UTCJul 19, 05:25 UTC1h 0m
2026-07-19 FFT1127 - Jul 19, 01:05 UTCJul 19, 02:10 UTC1h 5m
2026-07-18 FFT1874 - Jul 18, 22:55 UTCJul 19, 00:15 UTC1h 20m

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 N434FR page for operator, model, and routing details .

Mode-S A53287 frequently asked

What is Mode-S code A53287?
A53287 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N434FR.
Where is Mode-S A53287 registered?
Mode-S code A53287 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 A53287 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A53287, octal 51231207, decimal 10,826,375.
What flights does A53287 operate?
Mode-S A53287 has broadcast 20 distinct callsigns, including FFT1823, FFT4726, FFT4420, FFT4419, FFT3004.