Apparatus

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sensors Mode-S transponder

A7D2F1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N603FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A7D2F1
Octal
51751361
Decimal
10,998,513
Country
US
Tail
N603FR
Type
A21N
Broadcasting now · callsign FFT2206 · 34,025 ft
Flights observed
455
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A7D2F1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A7D2F1 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
FFT4462 - 8 2026-07-14
FFT86 Frontier Airlines 7 2026-06-04
FFT45 Frontier Airlines 6 2026-06-04
FFT91 Frontier Airlines 5 2026-04-19
FFT4732 - 5 2026-06-28
FFT3306 - 5 2026-07-13
FFT2551 - 5 2026-07-10
FFT1726 - 5 2026-07-11
FFT1165 - 5 2026-07-13
FFT4797 - 4 2026-06-28
FFT4731 - 4 2026-06-28
FFT4427 - 4 2026-06-17
FFT2695 - 4 2026-07-08
FFT2510 - 4 2026-06-17
FFT2298 - 4 2026-07-10
FFT1166 Frontier Airlines 4 2026-07-07
FFT1082 Frontier Airlines 4 2026-05-25
FFT1015 - 4 2026-07-07
FFT90 Frontier Airlines 3 2026-04-19
FFT6 - 3 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT3017 - Jul 14, 12:35 UTCJul 14, 13:05 UTC30m
2026-07-14 FFT4462 - Jul 14, 03:55 UTCJul 14, 04:05 UTC10m
2026-07-14 FFT4462 - Jul 14, 01:00 UTCJul 14, 01:35 UTC35m
2026-07-13 FFT1165 - Jul 13, 22:05 UTCJul 13, 23:10 UTC1h 5m
2026-07-13 FFT3306 - Jul 13, 15:05 UTCJul 13, 15:55 UTC50m
2026-07-13 FFT3305 - Jul 13, 10:30 UTCJul 13, 13:20 UTC2h 50m
2026-07-13 FFT4462 - Jul 13, 04:00 UTCJul 13, 04:20 UTC20m
2026-07-13 FFT4462 - Jul 13, 01:05 UTCJul 13, 01:45 UTC40m
2026-07-12 FFT1165 - Jul 12, 22:20 UTCJul 12, 23:15 UTC55m
2026-07-12 FFT1165 - Jul 12, 19:50 UTCJul 12, 20:01 UTC10m
2026-07-12 FFT3306 - Jul 12, 15:05 UTCJul 12, 17:50 UTC2h 45m
2026-07-12 FFT3305 - Jul 12, 10:55 UTCJul 12, 13:40 UTC2h 45m
2026-07-12 FFT4462 - Jul 12, 03:50 UTCJul 12, 04:10 UTC20m
2026-07-12 FFT4462 - Jul 12, 00:55 UTCJul 12, 01:40 UTC45m
2026-07-11 FFT1165 - Jul 11, 21:45 UTCJul 11, 22:30 UTC45m
2026-07-11 FFT1165 - Jul 11, 19:15 UTCJul 11, 19:30 UTC15m
2026-07-11 FFT3306 - Jul 11, 17:05 UTCJul 11, 17:25 UTC20m
2026-07-11 FFT3306 - Jul 11, 14:45 UTCJul 11, 15:40 UTC55m
2026-07-11 FFT3306 JAX → SJU Jul 11, 14:57 UTCJul 11, 17:25 UTC2h 28m
2026-07-11 FFT3305 - Jul 11, 10:35 UTCJul 11, 13:25 UTC2h 50m
2026-07-11 FFT1726 - Jul 11, 03:35 UTCJul 11, 06:50 UTC3h 15m
2026-07-11 FFT1726 - Jul 11, 03:05 UTCJul 11, 03:10 UTC5m
2026-07-11 FFT1726 - Jul 11, 02:25 UTCJul 11, 02:45 UTC20m
2026-07-11 FFT2072 - Jul 11, 00:15 UTCJul 11, 01:15 UTC1h 0m
2026-07-10 FFT1517 PHL → RDU Jul 10, 21:30 UTCJul 10, 22:35 UTC1h 5m
2026-07-10 FFT2298 ATL → PHL Jul 10, 17:06 UTCJul 10, 18:48 UTC1h 42m
2026-07-10 FFT2298 - Jul 10, 17:20 UTCJul 10, 19:05 UTC1h 45m
2026-07-10 FFT2551 - Jul 10, 13:45 UTCJul 10, 15:20 UTC1h 35m
2026-07-10 FFT2551 - Jul 10, 13:15 UTCJul 10, 13:20 UTC5m
2026-07-10 FFT2551 PHL → PHL Jul 10, 12:55 UTCJul 10, 13:05 UTC10m
2026-07-10 FFT9803 - Jul 10, 03:05 UTCJul 10, 05:10 UTC2h 5m
2026-07-09 FFT4455 PHL → FLL Jul 9, 21:40 UTCJul 10, 00:00 UTC2h 20m
2026-07-09 FFT4455 PHL → PHL Jul 9, 21:25 UTCJul 9, 21:30 UTC5m
2026-07-09 FFT4455 PHL → PHL Jul 9, 20:20 UTCJul 9, 20:30 UTC10m
2026-07-09 FFT7023 - Jul 9, 15:05 UTCJul 9, 18:15 UTC3h 10m
2026-07-09 FFT7023 PUJ → PHL Jul 9, 14:14 UTCJul 9, 18:10 UTC3h 56m
2026-07-08 FFT22 - Jul 8, 13:50 UTCJul 8, 14:35 UTC45m
2026-07-08 FFT2695 - Jul 8, 01:15 UTCJul 8, 02:05 UTC50m
2026-07-07 FFT2695 - Jul 7, 22:40 UTCJul 7, 22:55 UTC15m
2026-07-07 FFT1166 MCO → PHL Jul 7, 20:25 UTCJul 7, 20:35 UTC10m
2026-07-07 FFT1166 MCO → PHL Jul 7, 20:05 UTCJul 7, 20:35 UTC30m
2026-07-07 FFT1166 MCO → PHL Jul 7, 16:45 UTCJul 7, 18:25 UTC1h 40m
2026-07-07 FFT1166 MCO → PHL Jul 7, 16:26 UTCJul 7, 20:10 UTC3h 44m
2026-07-07 FFT1015 - Jul 7, 13:40 UTCJul 7, 14:55 UTC1h 15m
2026-07-07 FFT1015 - Jul 7, 11:10 UTCJul 7, 11:25 UTC15m
2026-07-07 FFT1726 - Jul 7, 05:25 UTCJul 7, 08:40 UTC3h 15m
2026-07-07 FFT1726 PHL → PHL Jul 7, 05:10 UTCJul 7, 05:15 UTC5m
2026-07-07 FFT2695 - Jul 7, 02:40 UTCJul 7, 03:25 UTC45m
2026-07-07 FFT2695 - Jul 7, 00:00 UTCJul 7, 00:20 UTC20m
2026-07-06 FFT3018 - Jul 6, 22:00 UTCJul 6, 22:15 UTC15m

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 N603FR page for operator, model, and routing details .

Mode-S A7D2F1 frequently asked

What is Mode-S code A7D2F1?
A7D2F1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N603FR.
Where is Mode-S A7D2F1 registered?
Mode-S code A7D2F1 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 A7D2F1 broadcasting right now?
Yes. Mode-S A7D2F1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7D2F1, octal 51751361, decimal 10,998,513.
What flights does A7D2F1 operate?
Mode-S A7D2F1 has broadcast 20 distinct callsigns, including FFT4462, FFT86, FFT45, FFT91, FFT4732.