Apparatus

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sensors Mode-S transponder

A41090

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N361FR · AIRBUS A-320neo · operated by BANK OF UTAH TRUSTEE

Hex
A41090
Octal
51010220
Decimal
10,752,144
Country
US
Tail
N361FR
Type
A20N
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
507
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A41090.

Country allocation

The ICAO 24-bit address A41090 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
FFT1537 - 6 2026-07-18
FFT4092 - 5 2026-07-18
FFT3291 - 5 2026-07-16
FFT3054 - 5 2026-07-18
FFT2575 - 5 2026-07-16
FFT2547 Frontier Airlines 5 2026-05-01
FFT1477 Frontier Airlines 5 2026-04-27
FFT1267 Frontier Airlines 5 2026-05-19
FFT4707 Frontier Airlines 4 2026-07-21
FFT4112 Frontier Airlines 4 2026-04-30
FFT3942 - 4 2026-07-03
FFT3523 Frontier Airlines 4 2026-04-27
FFT3512 Frontier Airlines 4 2026-06-11
FFT3019 Frontier Airlines 4 2026-05-22
FFT2898 - 4 2026-07-21
FFT2273 Frontier Airlines 4 2026-04-15
FFT1823 - 4 2026-07-03
FFT1750 - 4 2026-06-24
FFT1611 Frontier Airlines 4 2026-07-05
FFT4837 - 3 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT1974 DFW → FLL Jul 26, 19:05 UTCJul 26, 21:45 UTC2h 40m
2026-07-26 FFT1426 SAN → DFW Jul 26, 13:50 UTCJul 26, 16:35 UTC2h 45m
2026-07-26 FFT4306 SFO → SAN Jul 26, 07:20 UTCJul 26, 08:30 UTC1h 10m
2026-07-26 FFT3383 SAN → SFO Jul 26, 05:00 UTCJul 26, 06:05 UTC1h 5m
2026-07-25 FFT3383 SAN → SFO Jul 25, 23:20 UTCJul 26, 01:45 UTC2h 25m
2026-07-25 FFT3787 BWI → DFW Jul 25, 18:35 UTCJul 25, 21:15 UTC2h 40m
2026-07-25 FFT3788 DFW → BWI Jul 25, 14:30 UTCJul 25, 17:10 UTC2h 40m
2026-07-25 FFT3788 DFW → BWI Jul 25, 14:40 UTCJul 25, 17:08 UTC2h 28m
2026-07-25 FFT4000 SFO → DFW Jul 25, 08:15 UTCJul 25, 11:10 UTC2h 55m
2026-07-25 FFT3999 DFW → SFO Jul 25, 03:30 UTCJul 25, 06:55 UTC3h 25m
2026-07-24 FFT3223 DEN → SLC Jul 24, 22:15 UTCJul 25, 00:10 UTC1h 55m
2026-07-24 FFT3224 - Jul 24, 18:50 UTCJul 24, 20:50 UTC2h 0m
2026-07-24 FFT3021 ATL → DFW Jul 24, 15:05 UTCJul 24, 16:55 UTC1h 50m
2026-07-24 FFT1270 DFW → ATL Jul 24, 11:30 UTCJul 24, 13:10 UTC1h 40m
2026-07-24 FFT1887 MDW → DFW Jul 24, 02:30 UTCJul 24, 04:15 UTC1h 45m
2026-07-23 FFT2882 DFW → MDW Jul 23, 23:30 UTCJul 24, 01:50 UTC2h 20m
2026-07-23 FFT3787 BWI → DFW Jul 23, 18:35 UTCJul 23, 21:10 UTC2h 35m
2026-07-23 FFT3788 DFW → BWI Jul 23, 14:35 UTCJul 23, 17:15 UTC2h 40m
2026-07-23 FFT1650 RDU → PHL Jul 23, 08:10 UTCJul 23, 10:20 UTC2h 10m
2026-07-23 FFT3885 DFW → LAS Jul 23, 04:10 UTCJul 23, 06:20 UTC2h 10m
2026-07-22 FFT2999 MDW → DFW Jul 22, 22:10 UTCJul 23, 00:00 UTC1h 50m
2026-07-22 FFT2882 DFW → MDW Jul 22, 19:10 UTCJul 22, 20:55 UTC1h 45m
2026-07-22 FFT2882 DFW → MDW Jul 22, 18:45 UTCJul 22, 20:50 UTC2h 5m
2026-07-22 FFT3021 ATL → DFW Jul 22, 15:20 UTCJul 22, 16:55 UTC1h 35m
2026-07-21 FFT2899 DTW → ATL Jul 21, 19:15 UTCJul 21, 20:40 UTC1h 25m
2026-07-21 FFT2899 DTW → ATL Jul 21, 19:07 UTCJul 21, 20:39 UTC1h 32m
2026-07-21 FFT2898 ATL → DTW Jul 21, 15:45 UTCJul 21, 17:14 UTC1h 29m
2026-07-21 FFT2898 ATL → DTW Jul 21, 15:40 UTCJul 21, 17:15 UTC1h 35m
2026-07-21 FFT4707 IAD → ATL Jul 21, 12:02 UTCJul 21, 13:14 UTC1h 12m
2026-07-21 FFT4707 IAD → ATL Jul 21, 12:00 UTCJul 21, 13:15 UTC1h 15m
2026-07-21 FFT3692 ATL → IAD Jul 21, 02:10 UTCJul 21, 03:30 UTC1h 20m
2026-07-20 FFT2972 MSY → ATL Jul 20, 23:00 UTCJul 21, 00:10 UTC1h 10m
2026-07-20 FFT1371 ATL → MSY Jul 20, 20:20 UTCJul 20, 21:20 UTC1h 0m
2026-07-20 FFT1846 PHX → DTW Jul 20, 17:05 UTCJul 20, 18:10 UTC1h 5m
2026-07-20 FFT4771 ATL → CVG Jul 20, 14:35 UTCJul 20, 15:35 UTC1h 0m
2026-07-20 FFT1263 DTW → ATL Jul 20, 10:20 UTCJul 20, 11:35 UTC1h 15m
2026-07-20 FFT1263 DTW → ATL Jul 20, 10:21 UTCJul 20, 11:35 UTC1h 14m
2026-07-20 FFT1264 ATL → DTW Jul 20, 03:25 UTCJul 20, 04:50 UTC1h 25m
2026-07-20 FFT4474 STL → ATL Jul 20, 00:05 UTCJul 20, 01:20 UTC1h 15m
2026-07-19 FFT4473 ATL → STL Jul 19, 21:25 UTCJul 19, 23:00 UTC1h 35m
2026-07-19 FFT4707 IAD → ATL Jul 19, 12:05 UTCJul 19, 13:20 UTC1h 15m
2026-07-19 FFT4707 IAD → ATL Jul 19, 12:02 UTCJul 19, 13:22 UTC1h 20m
2026-07-19 FFT3692 - Jul 19, 03:00 UTCJul 19, 04:30 UTC1h 30m
2026-07-19 FFT2052 MSY → ATL Jul 19, 00:15 UTCJul 19, 01:25 UTC1h 10m
2026-07-18 FFT2051 ATL → MSY Jul 18, 20:35 UTCJul 18, 21:40 UTC1h 5m
2026-07-18 FFT4435 TPA → ATL Jul 18, 18:10 UTCJul 18, 19:10 UTC1h 0m
2026-07-18 FFT1537 - Jul 18, 14:10 UTCJul 18, 16:05 UTC1h 55m
2026-07-18 FFT4092 TPA → BWI Jul 18, 10:50 UTCJul 18, 12:50 UTC2h 0m
2026-07-18 FFT3054 - Jul 18, 03:35 UTCJul 18, 04:45 UTC1h 10m
2026-07-18 FFT3054 ATL → TPA Jul 18, 03:15 UTCJul 18, 04:41 UTC1h 26m

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 N361FR page for operator, model, and routing details .

Mode-S A41090 frequently asked

What is Mode-S code A41090?
A41090 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N361FR.
Where is Mode-S A41090 registered?
Mode-S code A41090 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 A41090 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 A41090, octal 51010220, decimal 10,752,144.
What flights does A41090 operate?
Mode-S A41090 has broadcast 20 distinct callsigns, including FFT1537, FFT4092, FFT3291, FFT3054, FFT2575.