Apparatus

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sensors Mode-S transponder

A3A538

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N334FR · AIRBUS A-320neo · operated by BANK OF UTAH TRUSTEE

Hex
A3A538
Octal
50722470
Decimal
10,724,664
Country
US
Tail
N334FR
Type
A20N
No current signal · last broadcast Apr 22, 20:15 UTC
Flights observed
60
Distinct callsigns
20
Country
US
Last broadcast
Apr 22, 20:15 UTC

Last known position

Most recent position reported by Mode-S A3A538.

Country allocation

The ICAO 24-bit address A3A538 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
FFT3885 Frontier Airlines 4 2026-04-21
FFT1650 Frontier Airlines 4 2026-04-19
FFT4684 Frontier Airlines 3 2026-04-17
FFT4571 - 3 2026-04-13
FFT9048 Frontier Airlines 2 2026-04-22
FFT4201 Frontier Airlines 2 2026-04-18
FFT3990 Frontier Airlines 2 2026-04-19
FFT3971 - 2 2026-04-14
FFT3645 Frontier Airlines 2 2026-04-17
FFT2885 Frontier Airlines 2 2026-04-20
FFT2532 Frontier Airlines 2 2026-04-14
FFT2401 Frontier Airlines 2 2026-04-17
FFT2147 Frontier Airlines 2 2026-04-15
FFT1974 Frontier Airlines 2 2026-04-16
FFT1973 Frontier Airlines 2 2026-04-16
FFT1700 - 2 2026-04-13
FFT1334 Frontier Airlines 2 2026-04-16
FFT4993 Frontier Airlines 1 2026-04-19
FFT4683 Frontier Airlines 1 2026-04-14
FFT4623 Frontier Airlines 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-04-22 FFT9048 LAS → GYR Apr 22, 19:13 UTCApr 22, 20:19 UTC1h 6m
2026-04-22 FFT9048 LAS → GYR Apr 22, 19:30 UTCApr 22, 20:00 UTC30m
2026-04-21 FFT3885 DFW → LAS Apr 21, 04:05 UTCApr 21, 06:25 UTC2h 20m
2026-04-20 FFT3567 CLE → DFW Apr 20, 23:25 UTCApr 21, 01:45 UTC2h 20m
2026-04-20 FFT3568 DFW → CLE Apr 20, 19:30 UTCApr 20, 21:45 UTC2h 15m
2026-04-20 FFT2885 MCO → DFW Apr 20, 14:45 UTCApr 20, 17:20 UTC2h 35m
2026-04-20 FFT2885 MCO → DFW Apr 20, 14:50 UTCApr 20, 17:18 UTC2h 28m
2026-04-20 FFT1482 DFW → MCO Apr 20, 10:40 UTCApr 20, 12:40 UTC2h 0m
2026-04-20 FFT3423 LGA → DFW Apr 20, 04:05 UTCApr 20, 07:25 UTC3h 20m
2026-04-20 FFT3424 DFW → LGA Apr 20, 00:05 UTCApr 20, 02:55 UTC2h 50m
2026-04-19 FFT4993 MSY → DFW Apr 19, 19:30 UTCApr 19, 20:55 UTC1h 25m
2026-04-19 FFT4623 DTW → MSY Apr 19, 16:10 UTCApr 19, 18:25 UTC2h 15m
2026-04-19 FFT3990 SAN → DFW Apr 19, 12:35 UTCApr 19, 14:42 UTC2h 7m
2026-04-19 FFT3990 SAN → DFW Apr 19, 12:40 UTCApr 19, 14:45 UTC2h 5m
2026-04-19 FFT1650 RDU → PHL Apr 19, 08:35 UTCApr 19, 10:40 UTC2h 5m
2026-04-19 FFT3885 DFW → LAS Apr 19, 03:45 UTCApr 19, 06:15 UTC2h 30m
2026-04-18 FFT1341 ORD → DFW Apr 18, 20:45 UTCApr 18, 23:05 UTC2h 20m
2026-04-18 FFT1342 DFW → ORD Apr 18, 16:50 UTCApr 18, 18:30 UTC1h 40m
2026-04-18 FFT1650 RDU → PHL Apr 18, 09:25 UTCApr 18, 11:40 UTC2h 15m
2026-04-18 FFT4156 SFO → LAS Apr 18, 05:25 UTCApr 18, 06:25 UTC1h 0m
2026-04-18 FFT4201 SNA → SFO Apr 18, 03:25 UTCApr 18, 04:10 UTC45m
2026-04-18 FFT4201 SNA → SFO Apr 18, 02:32 UTCApr 18, 04:06 UTC1h 34m
2026-04-18 FFT3737 LAS → SNA Apr 18, 00:45 UTCApr 18, 01:20 UTC35m
2026-04-17 FFT3645 AUS → LAS Apr 17, 21:25 UTCApr 17, 23:05 UTC1h 40m
2026-04-17 FFT3645 AUS → LAS Apr 17, 20:10 UTCApr 17, 21:20 UTC1h 10m
2026-04-17 FFT4684 LAS → AUS Apr 17, 17:25 UTCApr 17, 17:35 UTC10m
2026-04-17 FFT4684 LAS → AUS Apr 17, 15:20 UTCApr 17, 17:15 UTC1h 55m
2026-04-17 FFT4684 LAS → AUS Apr 17, 15:10 UTCApr 17, 15:15 UTC5m
2026-04-17 FFT3885 DFW → LAS Apr 17, 05:20 UTCApr 17, 07:15 UTC1h 55m
2026-04-17 FFT3885 DFW → LAS Apr 17, 04:40 UTCApr 17, 05:15 UTC35m
2026-04-17 FFT2401 TPA → DFW Apr 17, 01:20 UTCApr 17, 01:50 UTC30m
2026-04-16 FFT2401 TPA → DFW Apr 16, 23:25 UTCApr 17, 01:15 UTC1h 50m
2026-04-16 FFT1334 MCO → LGA Apr 16, 21:14 UTCApr 16, 21:34 UTC20m
2026-04-16 FFT1334 MCO → LGA Apr 16, 19:40 UTCApr 16, 21:10 UTC1h 30m
2026-04-16 FFT1973 FLL → DFW Apr 16, 17:15 UTCApr 16, 18:15 UTC1h 0m
2026-04-16 FFT1973 FLL → DFW Apr 16, 15:30 UTCApr 16, 17:10 UTC1h 40m
2026-04-16 FFT1974 DFW → FLL Apr 16, 13:15 UTCApr 16, 13:44 UTC30m
2026-04-16 FFT1974 DFW → FLL Apr 16, 11:29 UTCApr 16, 13:05 UTC1h 35m
2026-04-15 FFT3396 DEN → DFW Apr 15, 17:05 UTCApr 15, 17:35 UTC30m
2026-04-15 FFT2147 DFW → DEN Apr 15, 13:01 UTCApr 15, 14:15 UTC1h 15m
2026-04-15 FFT2147 DFW → DEN Apr 15, 12:40 UTCApr 15, 12:55 UTC15m
2026-04-14 FFT2532 PHX → DFW Apr 14, 18:55 UTCApr 14, 20:20 UTC1h 25m
2026-04-14 FFT2532 PHX → DFW Apr 14, 18:25 UTCApr 14, 18:45 UTC20m
2026-04-14 FFT3971 - Apr 14, 14:50 UTCApr 14, 16:45 UTC1h 55m
2026-04-14 FFT3971 - Apr 14, 14:25 UTCApr 14, 14:45 UTC20m
2026-04-14 FFT1650 RDU → PHL Apr 14, 09:10 UTCApr 14, 10:25 UTC1h 15m
2026-04-14 FFT1650 RDU → PHL Apr 14, 08:20 UTCApr 14, 09:05 UTC45m
2026-04-14 FFT4683 AUS → LAS Apr 14, 05:15 UTCApr 14, 06:55 UTC1h 40m
2026-04-13 FFT1469 LAS → SAN Apr 13, 22:35 UTCApr 13, 23:25 UTC50m
2026-04-13 FFT4108 BUR → LAS Apr 13, 20:20 UTCApr 13, 21:05 UTC45m

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 N334FR page for operator, model, and routing details .

Mode-S A3A538 frequently asked

What is Mode-S code A3A538?
A3A538 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N334FR.
Where is Mode-S A3A538 registered?
Mode-S code A3A538 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 A3A538 broadcasting right now?
No active broadcast right now. Last signal was Apr 22, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A538, octal 50722470, decimal 10,724,664.
What flights does A3A538 operate?
Mode-S A3A538 has broadcast 20 distinct callsigns, including FFT3885, FFT1650, FFT4684, FFT4571, FFT9048.