Apparatus

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sensors Mode-S transponder

A81E38

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N622FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A81E38
Octal
52017070
Decimal
11,017,784
Country
US
Tail
N622FR
Type
A21N
Broadcasting now · callsign FFT3381 · 25,725 ft
Flights observed
547
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:35 UTC

Current position

A81E38 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A81E38 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
FFT1407 - 6 2026-07-09
FFT3288 Frontier Airlines 5 2026-05-17
FFT2885 - 5 2026-07-15
FFT4874 Frontier Airlines 4 2026-05-17
FFT4758 Frontier Airlines 4 2026-06-18
FFT45 Frontier Airlines 4 2026-07-17
FFT4411 Frontier Airlines 4 2026-06-01
FFT4036 Frontier Airlines 4 2026-05-31
FFT3663 - 4 2026-07-11
FFT3599 Frontier Airlines 4 2026-06-05
FFT3287 Frontier Airlines 4 2026-05-17
FFT3044 - 4 2026-07-17
FFT2529 - 4 2026-07-11
FFT2232 Frontier Airlines 4 2026-05-04
FFT1550 Frontier Airlines 4 2026-05-29
FFT1516 - 4 2026-07-11
FFT87 Frontier Airlines 3 2026-07-03
FFT777 - 3 2026-06-18
FFT70 Frontier Airlines 3 2026-06-16
FFT4712 Frontier Airlines 3 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT2412 ONT → IAH Jul 26, 17:40 UTCJul 26, 20:35 UTC2h 55m
2026-07-26 FFT4689 DFW → ONT Jul 26, 14:10 UTCJul 26, 16:30 UTC2h 20m
2026-07-26 FFT3423 LGA → DFW Jul 26, 03:10 UTCJul 26, 05:55 UTC2h 45m
2026-07-25 FFT3424 DFW → LGA Jul 25, 22:50 UTCJul 26, 01:50 UTC3h 0m
2026-07-25 FFT1269 ATL → DFW Jul 25, 19:05 UTCJul 25, 20:50 UTC1h 45m
2026-07-25 FFT3022 DFW → ATL Jul 25, 15:25 UTCJul 25, 17:10 UTC1h 45m
2026-07-24 FFT1973 FLL → DFW Jul 24, 23:45 UTCJul 25, 02:15 UTC2h 30m
2026-07-24 FFT1974 DFW → FLL Jul 24, 19:15 UTCJul 24, 21:50 UTC2h 35m
2026-07-24 FFT1333 TPA → DFW Jul 24, 14:50 UTCJul 24, 16:55 UTC2h 5m
2026-07-24 FFT1334 MCO → LGA Jul 24, 10:45 UTCJul 24, 12:55 UTC2h 10m
2026-07-24 FFT3423 LGA → DFW Jul 24, 03:05 UTCJul 24, 06:00 UTC2h 55m
2026-07-23 FFT3424 DFW → LGA Jul 23, 22:35 UTCJul 24, 01:40 UTC3h 5m
2026-07-23 FFT1269 ATL → DFW Jul 23, 19:00 UTCJul 23, 20:50 UTC1h 50m
2026-07-23 FFT3022 DFW → ATL Jul 23, 15:25 UTCJul 23, 17:10 UTC1h 45m
2026-07-23 FFT3423 LGA → DFW Jul 23, 03:30 UTCJul 23, 06:30 UTC3h 0m
2026-07-22 FFT3424 DFW → LGA Jul 22, 22:45 UTCJul 23, 02:05 UTC3h 20m
2026-07-22 FFT1269 ATL → DFW Jul 22, 19:15 UTCJul 22, 20:55 UTC1h 40m
2026-07-22 FFT3022 DFW → ATL Jul 22, 15:25 UTCJul 22, 17:10 UTC1h 45m
2026-07-22 FFT3097 ATL → DFW Jul 22, 01:30 UTCJul 22, 03:15 UTC1h 45m
2026-07-21 FFT152 CUN → ATL Jul 21, 20:40 UTCJul 21, 22:40 UTC2h 0m
2026-07-21 FFT153 ATL → CUN Jul 21, 16:40 UTCJul 21, 18:35 UTC1h 55m
2026-07-21 FFT4427 - Jul 21, 13:05 UTCJul 21, 14:30 UTC1h 25m
2026-07-21 FFT2510 TPA → GRR Jul 21, 09:35 UTCJul 21, 11:25 UTC1h 50m
2026-07-21 FFT4347 LGA → ATL Jul 21, 04:35 UTCJul 21, 06:15 UTC1h 40m
2026-07-21 FFT3458 - Jul 21, 02:30 UTCJul 21, 03:10 UTC40m
2026-07-21 FFT3458 - Jul 21, 01:20 UTCJul 21, 02:25 UTC1h 5m
2026-07-20 FFT1147 SJU → BDL Jul 20, 21:25 UTCJul 20, 22:55 UTC1h 30m
2026-07-20 FFT2538 TPA → PHL Jul 20, 17:35 UTCJul 20, 19:50 UTC2h 15m
2026-07-20 FFT2538 TPA → PHL Jul 20, 17:02 UTCJul 20, 19:48 UTC2h 46m
2026-07-20 FFT2729 RDU → TPA Jul 20, 14:25 UTCJul 20, 15:45 UTC1h 20m
2026-07-20 FFT2729 RDU → TPA Jul 20, 13:57 UTCJul 20, 15:45 UTC1h 48m
2026-07-20 FFT2059 PHL → RDU Jul 20, 11:30 UTCJul 20, 12:25 UTC55m
2026-07-20 FFT2059 PHL → RDU Jul 20, 11:20 UTCJul 20, 11:25 UTC5m
2026-07-20 FFT4170 MCO → PHL Jul 20, 06:10 UTCJul 20, 08:10 UTC2h 0m
2026-07-20 FFT2287 - Jul 20, 03:10 UTCJul 20, 04:40 UTC1h 30m
2026-07-20 FFT2288 MCO → ORF Jul 20, 00:25 UTCJul 20, 01:55 UTC1h 30m
2026-07-19 FFT4725 - Jul 19, 19:30 UTCJul 19, 20:20 UTC50m
2026-07-19 FFT4725 - Jul 19, 17:45 UTCJul 19, 18:00 UTC15m
2026-07-19 FFT2250 ATL → BDL Jul 19, 12:25 UTCJul 19, 14:50 UTC2h 25m
2026-07-19 FFT3261 BUF → MCO Jul 19, 02:05 UTCJul 19, 04:10 UTC2h 5m
2026-07-18 FFT3262 MCO → BUF Jul 18, 22:30 UTCJul 19, 00:45 UTC2h 15m
2026-07-18 FFT3262 MCO → BUF Jul 18, 22:30 UTCJul 19, 00:44 UTC2h 14m
2026-07-18 FFT1418 - Jul 18, 18:35 UTCJul 18, 20:35 UTC2h 0m
2026-07-18 FFT1741 MCO → MKE Jul 18, 14:35 UTCJul 18, 16:50 UTC2h 15m
2026-07-18 FFT1040 MCO → RDU Jul 18, 11:40 UTCJul 18, 13:00 UTC1h 20m
2026-07-17 FFT3044 ORD → MCO Jul 17, 22:35 UTCJul 18, 01:20 UTC2h 45m
2026-07-17 FFT3044 ORD → MCO Jul 17, 22:28 UTCJul 18, 01:19 UTC2h 51m
2026-07-17 FFT45 CUN → ORD Jul 17, 16:10 UTCJul 17, 19:35 UTC3h 25m
2026-07-17 FFT86 DEN → SJO Jul 17, 11:39 UTCJul 17, 14:15 UTC2h 35m
2026-07-17 FFT2635 MCO → STL Jul 17, 04:25 UTCJul 17, 06:15 UTC1h 50m

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 N622FR page for operator, model, and routing details .

Mode-S A81E38 frequently asked

What is Mode-S code A81E38?
A81E38 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N622FR.
Where is Mode-S A81E38 registered?
Mode-S code A81E38 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 A81E38 broadcasting right now?
Yes. Mode-S A81E38 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A81E38, octal 52017070, decimal 11,017,784.
What flights does A81E38 operate?
Mode-S A81E38 has broadcast 20 distinct callsigns, including FFT1407, FFT3288, FFT2885, FFT4874, FFT4758.