Apparatus

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sensors Mode-S transponder

A7F6B9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N612FR · AIRBUS A-321neo · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A7F6B9
Octal
51773271
Decimal
11,007,673
Country
US
Tail
N612FR
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
434
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A7F6B9.

Country allocation

The ICAO 24-bit address A7F6B9 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
FFT4315 Frontier Airlines 9 2026-06-13
FFT4316 - 8 2026-06-13
FFT153 Frontier Airlines 8 2026-06-03
FFT152 Frontier Airlines 7 2026-06-03
FFT2350 - 6 2026-07-12
FFT2111 - 6 2026-07-10
FFT4427 - 5 2026-06-03
FFT25 Frontier Airlines 5 2026-05-25
FFT1166 Frontier Airlines 5 2026-07-06
FFT91 Frontier Airlines 4 2026-04-30
FFT4919 - 4 2026-07-11
FFT4712 Frontier Airlines 4 2026-05-25
FFT4440 - 4 2026-06-25
FFT3085 Frontier Airlines 4 2026-07-01
FFT2871 - 4 2026-07-07
FFT2510 Frontier Airlines 4 2026-06-03
FFT2349 - 4 2026-07-11
FFT2112 - 4 2026-07-10
FFT1993 - 4 2026-07-12
FFT1590 - 4 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT4186 DEN → DTW Jul 14, 01:35 UTCJul 14, 04:00 UTC2h 25m
2026-07-13 FFT3540 LAS → DEN Jul 13, 22:20 UTCJul 13, 23:50 UTC1h 30m
2026-07-13 FFT4967 DEN → LAS Jul 13, 19:05 UTCJul 13, 20:35 UTC1h 30m
2026-07-13 FFT3156 - Jul 13, 13:50 UTCJul 13, 15:40 UTC1h 50m
2026-07-13 FFT3316 - Jul 13, 02:50 UTCJul 13, 03:50 UTC1h 0m
2026-07-13 FFT2069 - Jul 13, 00:30 UTCJul 13, 01:35 UTC1h 5m
2026-07-12 FFT1590 SJC → LAS Jul 12, 21:35 UTCJul 12, 22:45 UTC1h 10m
2026-07-12 FFT4103 - Jul 12, 19:35 UTCJul 12, 20:30 UTC55m
2026-07-12 FFT1993 DEN → LAS Jul 12, 16:20 UTCJul 12, 17:40 UTC1h 20m
2026-07-12 FFT2350 LAS → DEN Jul 12, 13:13 UTCJul 12, 14:45 UTC1h 32m
2026-07-12 FFT2350 LAS → DEN Jul 12, 13:20 UTCJul 12, 14:45 UTC1h 25m
2026-07-11 FFT2349 DEN → LAS Jul 11, 22:40 UTCJul 12, 00:05 UTC1h 25m
2026-07-11 FFT4919 - Jul 11, 17:45 UTCJul 11, 21:00 UTC3h 15m
2026-07-11 FFT4919 MCO → DEN Jul 11, 17:43 UTCJul 11, 21:00 UTC3h 17m
2026-07-11 FFT2867 - Jul 11, 15:10 UTCJul 11, 16:10 UTC1h 0m
2026-07-11 FFT2867 - Jul 11, 13:35 UTCJul 11, 13:45 UTC10m
2026-07-11 FFT4462 PHL → SJU Jul 11, 02:50 UTCJul 11, 06:05 UTC3h 15m
2026-07-10 FFT2552 ATL → PHL Jul 10, 22:40 UTCJul 11, 00:25 UTC1h 45m
2026-07-10 FFT1101 - Jul 10, 18:10 UTCJul 10, 19:50 UTC1h 40m
2026-07-10 FFT1101 PHL → ATL Jul 10, 17:48 UTCJul 10, 19:49 UTC2h 1m
2026-07-10 FFT2112 - Jul 10, 08:30 UTCJul 10, 08:35 UTC5m
2026-07-10 FFT2112 - Jul 10, 06:05 UTCJul 10, 06:10 UTC5m
2026-07-10 FFT2112 ORD → PHL Jul 10, 04:25 UTCJul 10, 05:55 UTC1h 30m
2026-07-10 FFT2111 PHL → ORD Jul 10, 00:10 UTCJul 10, 02:00 UTC1h 50m
2026-07-09 FFT2111 - Jul 9, 23:45 UTCJul 9, 23:50 UTC5m
2026-07-09 FFT2111 - Jul 9, 23:10 UTCJul 9, 23:15 UTC5m
2026-07-09 FFT2111 PHL → ORD Jul 9, 23:01 UTCJul 10, 01:54 UTC2h 53m
2026-07-09 FFT357 STI → PHL Jul 9, 19:50 UTCJul 9, 19:55 UTC5m
2026-07-09 FFT357 STI → PHL Jul 9, 10:35 UTCJul 9, 18:45 UTC8h 10m
2026-07-09 FFT1328 - Jul 9, 02:50 UTCJul 9, 03:50 UTC1h 0m
2026-07-08 FFT1984 - Jul 8, 23:00 UTCJul 9, 00:35 UTC1h 35m
2026-07-08 FFT4455 - Jul 8, 19:10 UTCJul 8, 21:30 UTC2h 20m
2026-07-08 FFT4455 PHL → FLL Jul 8, 19:15 UTCJul 8, 21:20 UTC2h 5m
2026-07-08 FFT2298 - Jul 8, 16:20 UTCJul 8, 17:50 UTC1h 30m
2026-07-08 FFT1669 - Jul 8, 14:00 UTCJul 8, 14:50 UTC50m
2026-07-08 FFT1670 - Jul 8, 04:45 UTCJul 8, 06:15 UTC1h 30m
2026-07-08 FFT1079 - Jul 8, 02:05 UTCJul 8, 03:25 UTC1h 20m
2026-07-07 FFT2634 FLL → SWF Jul 7, 23:30 UTCJul 8, 00:55 UTC1h 25m
2026-07-07 FFT3511 BOS → ATL Jul 7, 16:30 UTCJul 7, 18:45 UTC2h 15m
2026-07-07 FFT3512 - Jul 7, 13:05 UTCJul 7, 15:05 UTC2h 0m
2026-07-07 FFT4797 - Jul 7, 10:30 UTCJul 7, 11:25 UTC55m
2026-07-07 FFT1670 ATL → RDU Jul 7, 04:25 UTCJul 7, 05:35 UTC1h 10m
2026-07-07 FFT2871 - Jul 7, 00:40 UTCJul 7, 02:00 UTC1h 20m
2026-07-06 FFT2871 - Jul 6, 22:55 UTCJul 6, 23:10 UTC15m
2026-07-06 FFT1166 MCO → PHL Jul 6, 20:55 UTCJul 6, 21:20 UTC25m
2026-07-06 FFT1166 MCO → PHL Jul 6, 17:35 UTCJul 6, 19:10 UTC1h 35m
2026-07-06 FFT1166 MCO → PHL Jul 6, 17:20 UTCJul 6, 17:30 UTC10m
2026-07-06 FFT1542 - Jul 6, 13:30 UTCJul 6, 15:30 UTC2h 0m
2026-07-05 FFT3855 PHL → MCO Jul 5, 21:20 UTCJul 5, 23:25 UTC2h 5m
2026-07-05 FFT356 PHL → STI Jul 5, 10:55 UTCJul 5, 18:30 UTC7h 35m

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 N612FR page for operator, model, and routing details .

Mode-S A7F6B9 frequently asked

What is Mode-S code A7F6B9?
A7F6B9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N612FR.
Where is Mode-S A7F6B9 registered?
Mode-S code A7F6B9 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 A7F6B9 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7F6B9, octal 51773271, decimal 11,007,673.
What flights does A7F6B9 operate?
Mode-S A7F6B9 has broadcast 20 distinct callsigns, including FFT4315, FFT4316, FFT153, FFT152, FFT2350.