Apparatus

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sensors Mode-S transponder

A3E55A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N350FR · AIRBUS A-320neo · operated by UMB BANK NA TRUSTEE

Hex
A3E55A
Octal
50762532
Decimal
10,741,082
Country
US
Tail
N350FR
Type
A20N
Transponder active on ground
Flights observed
547
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A3E55A.

Country allocation

The ICAO 24-bit address A3E55A 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
FFT4401 - 6 2026-07-14
FFT3971 Frontier Airlines 6 2026-05-15
FFT3581 - 6 2026-07-13
FFT2532 Frontier Airlines 6 2026-05-15
FFT4964 - 5 2026-06-23
FFT4753 - 5 2026-06-24
FFT3862 Frontier Airlines 5 2026-06-07
FFT341 Frontier Airlines 5 2026-06-21
FFT1874 - 5 2026-06-25
FFT690 Frontier Airlines 4 2026-06-07
FFT685 Frontier Airlines 4 2026-06-08
FFT3999 - 4 2026-06-20
FFT340 Frontier Airlines 4 2026-06-21
FFT3366 Frontier Airlines 4 2026-06-08
FFT3021 - 4 2026-06-19
FFT2232 - 4 2026-07-14
FFT2216 Frontier Airlines 4 2026-05-06
FFT1127 - 4 2026-06-26
FFT4766 Frontier Airlines 3 2026-05-17
FFT4741 Frontier Airlines 3 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT2232 - Jul 14, 21:00 UTCJul 14, 21:40 UTC40m
2026-07-14 FFT2232 ONT → LAS Jul 14, 21:05 UTCJul 14, 21:37 UTC32m
2026-07-14 FFT2678 SFO → ONT Jul 14, 19:05 UTCJul 14, 20:10 UTC1h 5m
2026-07-14 FFT4401 LAS → SFO Jul 14, 16:45 UTCJul 14, 17:55 UTC1h 10m
2026-07-14 FFT4401 LAS → SFO Jul 14, 16:37 UTCJul 14, 17:55 UTC1h 18m
2026-07-14 FFT1196 BUR → LAS Jul 14, 03:50 UTCJul 14, 04:40 UTC50m
2026-07-14 FFT1195 LAS → BUR Jul 14, 01:40 UTCJul 14, 02:25 UTC45m
2026-07-13 FFT1850 SFO → LAS Jul 13, 22:55 UTCJul 14, 00:20 UTC1h 25m
2026-07-13 FFT3581 - Jul 13, 20:35 UTCJul 13, 21:30 UTC55m
2026-07-13 FFT3581 SNA → SFO Jul 13, 20:27 UTCJul 13, 21:27 UTC1h 0m
2026-07-13 FFT1699 - Jul 13, 18:30 UTCJul 13, 19:10 UTC40m
2026-07-13 FFT4108 BUR → LAS Jul 13, 16:05 UTCJul 13, 16:50 UTC45m
2026-07-13 FFT4107 LAS → BUR Jul 13, 14:15 UTCJul 13, 15:00 UTC45m
2026-07-13 FFT4551 - Jul 13, 03:15 UTCJul 13, 07:30 UTC4h 15m
2026-07-12 FFT3699 - Jul 12, 23:55 UTCJul 13, 01:45 UTC1h 50m
2026-07-12 FFT3075 - Jul 12, 21:25 UTCJul 12, 22:25 UTC1h 0m
2026-07-12 FFT3075 BWI → CLT Jul 12, 21:28 UTCJul 12, 22:24 UTC56m
2026-07-12 FFT3076 - Jul 12, 18:01 UTCJul 12, 19:20 UTC1h 20m
2026-07-12 FFT2396 - Jul 12, 14:10 UTCJul 12, 16:10 UTC2h 0m
2026-07-12 FFT1067 - Jul 12, 10:45 UTCJul 12, 12:55 UTC2h 10m
2026-07-12 FFT1067 MIA → IAH Jul 12, 10:43 UTCJul 12, 13:05 UTC2h 22m
2026-07-12 FFT1068 - Jul 12, 01:45 UTCJul 12, 04:01 UTC2h 15m
2026-07-11 FFT2395 - Jul 11, 22:25 UTCJul 12, 00:30 UTC2h 5m
2026-07-11 FFT3037 - Jul 11, 19:05 UTCJul 11, 21:05 UTC2h 0m
2026-07-11 FFT4406 - Jul 11, 16:05 UTCJul 11, 17:25 UTC1h 20m
2026-07-11 FFT2483 - Jul 11, 12:40 UTCJul 11, 14:05 UTC1h 25m
2026-07-11 FFT4552 - Jul 11, 05:45 UTCJul 11, 10:05 UTC4h 20m
2026-07-11 FFT1196 BUR → LAS Jul 11, 01:15 UTCJul 11, 02:00 UTC45m
2026-07-10 FFT1195 LAS → BUR Jul 10, 23:13 UTCJul 10, 23:50 UTC37m
2026-07-10 FFT1195 LAS → BUR Jul 10, 23:05 UTCJul 10, 23:50 UTC45m
2026-07-10 FFT2575 SLC → LAS Jul 10, 19:55 UTCJul 10, 20:55 UTC1h 0m
2026-07-10 FFT1268 LAX → SLC Jul 10, 17:35 UTCJul 10, 19:00 UTC1h 25m
2026-07-10 FFT3291 - Jul 10, 15:45 UTCJul 10, 16:25 UTC40m
2026-07-10 FFT1257 LAS → LAS Jul 10, 11:50 UTCJul 10, 11:55 UTC5m
2026-07-10 FFT1257 TPA → LAS Jul 10, 03:30 UTCJul 10, 07:35 UTC4h 5m
2026-07-10 FFT3054 - Jul 10, 00:45 UTCJul 10, 01:50 UTC1h 5m
2026-07-09 FFT3053 TPA → ATL Jul 9, 21:30 UTCJul 9, 22:40 UTC1h 10m
2026-07-09 FFT123 - Jul 9, 12:10 UTCJul 9, 18:25 UTC6h 15m
2026-07-09 FFT2746 DEN → TPA Jul 9, 06:12 UTCJul 9, 09:41 UTC3h 29m
2026-07-09 FFT2746 DEN → TPA Jul 9, 06:25 UTCJul 9, 09:30 UTC3h 5m
2026-07-09 FFT2745 - Jul 9, 00:20 UTCJul 9, 04:10 UTC3h 50m
2026-07-08 FFT1689 - Jul 8, 20:50 UTCJul 8, 23:05 UTC2h 15m
2026-07-08 FFT1690 TPA → TTN Jul 8, 17:05 UTCJul 8, 19:10 UTC2h 5m
2026-07-08 FFT3782 - Jul 8, 14:20 UTCJul 8, 15:25 UTC1h 5m
2026-07-08 FFT4601 EWR → ATL Jul 8, 10:05 UTCJul 8, 11:50 UTC1h 45m
2026-07-08 FFT4602 ATL → EWR Jul 8, 03:50 UTCJul 8, 05:25 UTC1h 35m
2026-07-07 FFT3453 LGA → ATL Jul 7, 23:35 UTCJul 8, 01:20 UTC1h 45m
2026-07-07 FFT3453 LGA → ATL Jul 7, 23:12 UTCJul 8, 01:20 UTC2h 8m
2026-07-07 FFT3454 ATL → LGA Jul 7, 20:00 UTCJul 7, 21:40 UTC1h 40m
2026-07-07 FFT1123 - Jul 7, 16:25 UTCJul 7, 17:45 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 N350FR page for operator, model, and routing details .

Mode-S A3E55A frequently asked

What is Mode-S code A3E55A?
A3E55A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N350FR.
Where is Mode-S A3E55A registered?
Mode-S code A3E55A 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 A3E55A broadcasting right now?
Mode-S A3E55A is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3E55A, octal 50762532, decimal 10,741,082.
What flights does A3E55A operate?
Mode-S A3E55A has broadcast 20 distinct callsigns, including FFT4401, FFT3971, FFT3581, FFT2532, FFT4964.