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sensors Mode-S transponder

A8BFEB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N663FR · operated by BANK OF UTAH TRUSTEE

Hex
A8BFEB
Octal
52137753
Decimal
11,059,179
Country
US
Tail
N663FR
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
473
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A8BFEB.

Country allocation

The ICAO 24-bit address A8BFEB 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
FFT4732 Frontier Airlines 5 2026-06-05
FFT4731 Frontier Airlines 5 2026-06-05
FFT2885 - 5 2026-07-08
FFT1448 - 5 2026-06-14
FFT4891 - 4 2026-06-16
FFT4018 - 4 2026-07-08
FFT3913 - 4 2026-06-19
FFT2538 - 4 2026-07-01
FFT1957 Frontier Airlines 4 2026-06-17
FFT1853 - 4 2026-07-01
FFT1660 Frontier Airlines 4 2026-05-09
FFT1080 Frontier Airlines 4 2026-06-04
FFT1055 - 4 2026-07-10
FFT4712 Frontier Airlines 3 2026-04-28
FFT4315 Frontier Airlines 3 2026-06-06
FFT4144 Frontier Airlines 3 2026-05-24
FFT4131 - 3 2026-06-22
FFT3500 Frontier Airlines 3 2026-06-03
FFT3499 Frontier Airlines 3 2026-06-03
FFT3380 - 3 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT3707 - Jul 14, 00:35 UTCJul 14, 02:25 UTC1h 50m
2026-07-13 FFT2356 - Jul 13, 21:40 UTCJul 13, 23:30 UTC1h 50m
2026-07-13 FFT2225 - Jul 13, 16:35 UTCJul 13, 19:40 UTC3h 5m
2026-07-13 FFT2440 DEN → RDU Jul 13, 12:15 UTCJul 13, 15:20 UTC3h 5m
2026-07-13 FFT1149 - Jul 13, 03:30 UTCJul 13, 05:01 UTC1h 30m
2026-07-13 FFT1292 DEN → MSP Jul 13, 00:25 UTCJul 13, 02:01 UTC1h 35m
2026-07-12 FFT3934 - Jul 12, 19:50 UTCJul 12, 21:20 UTC1h 30m
2026-07-12 FFT3933 DEN → BOI Jul 12, 16:42 UTCJul 12, 18:07 UTC1h 25m
2026-07-12 FFT3933 - Jul 12, 16:35 UTCJul 12, 18:05 UTC1h 30m
2026-07-12 FFT2211 - Jul 12, 11:50 UTCJul 12, 14:15 UTC2h 25m
2026-07-12 FFT4186 - Jul 12, 01:35 UTCJul 12, 03:50 UTC2h 15m
2026-07-11 FFT3540 LAS → DEN Jul 11, 22:15 UTCJul 11, 23:40 UTC1h 25m
2026-07-11 FFT4967 DEN → LAS Jul 11, 19:00 UTCJul 11, 20:30 UTC1h 30m
2026-07-11 FFT1449 ATL → DEN Jul 11, 13:10 UTCJul 11, 15:45 UTC2h 35m
2026-07-11 FFT2608 PHX → ATL Jul 11, 07:50 UTCJul 11, 11:15 UTC3h 25m
2026-07-11 FFT2697 - Jul 11, 02:00 UTCJul 11, 06:01 UTC4h 0m
2026-07-10 FFT1055 MCO → CLE Jul 10, 22:25 UTCJul 11, 00:35 UTC2h 10m
2026-07-10 FFT1111 - Jul 10, 19:30 UTCJul 10, 20:45 UTC1h 15m
2026-07-10 FFT1111 RDU → MCO Jul 10, 19:16 UTCJul 10, 20:42 UTC1h 26m
2026-07-10 FFT1742 - Jul 10, 15:40 UTCJul 10, 18:10 UTC2h 30m
2026-07-10 FFT1417 - Jul 10, 11:40 UTCJul 10, 13:40 UTC2h 0m
2026-07-10 FFT1555 - Jul 10, 03:35 UTCJul 10, 04:40 UTC1h 5m
2026-07-10 FFT1556 - Jul 10, 00:30 UTCJul 10, 01:50 UTC1h 20m
2026-07-09 FFT4662 - Jul 9, 21:30 UTCJul 9, 22:40 UTC1h 10m
2026-07-09 FFT4661 MCO → PNS Jul 9, 18:50 UTCJul 9, 20:05 UTC1h 15m
2026-07-09 FFT4661 MCO → PNS Jul 9, 18:54 UTCJul 9, 20:00 UTC1h 6m
2026-07-09 FFT2415 PHL → MCO Jul 9, 14:40 UTCJul 9, 16:40 UTC2h 0m
2026-07-09 FFT2508 MCO → PHL Jul 9, 10:40 UTCJul 9, 12:35 UTC1h 55m
2026-07-09 FFT4003 - Jul 9, 01:55 UTCJul 9, 04:05 UTC2h 10m
2026-07-08 FFT4004 MCO → BWI Jul 8, 22:20 UTCJul 9, 00:10 UTC1h 50m
2026-07-08 FFT4018 - Jul 8, 18:00 UTCJul 8, 20:15 UTC2h 15m
2026-07-08 FFT4018 DFW → MCO Jul 8, 18:00 UTCJul 8, 20:11 UTC2h 11m
2026-07-08 FFT2885 MCO → DFW Jul 8, 13:45 UTCJul 8, 16:05 UTC2h 20m
2026-07-08 FFT3273 BWI → MCO Jul 8, 10:25 UTCJul 8, 12:10 UTC1h 45m
2026-07-08 FFT3664 MCO → BWI Jul 8, 01:55 UTCJul 8, 03:55 UTC2h 0m
2026-07-07 FFT3663 - Jul 7, 19:30 UTCJul 7, 21:30 UTC2h 0m
2026-07-07 FFT1516 - Jul 7, 17:00 UTCJul 7, 18:10 UTC1h 10m
2026-07-07 FFT2529 MCO → DTW Jul 7, 13:40 UTCJul 7, 15:45 UTC2h 5m
2026-07-07 FFT1086 PHX → MCO Jul 7, 08:00 UTCJul 7, 11:50 UTC3h 50m
2026-07-07 FFT2531 DFW → PHX Jul 7, 03:35 UTCJul 7, 05:30 UTC1h 55m
2026-07-06 FFT3972 PHX → DFW Jul 6, 23:55 UTCJul 7, 01:50 UTC1h 55m
2026-07-06 FFT1062 MCO → CVG Jul 6, 21:20 UTCJul 6, 22:15 UTC55m
2026-07-06 FFT1062 MCO → CVG Jul 6, 21:08 UTCJul 6, 22:15 UTC1h 7m
2026-07-06 FFT3303 PHX → LAX Jul 6, 18:50 UTCJul 6, 19:45 UTC55m
2026-07-06 FFT1085 - Jul 6, 13:40 UTCJul 6, 17:25 UTC3h 45m
2026-07-05 FFT3044 - Jul 5, 22:40 UTCJul 6, 01:05 UTC2h 25m
2026-07-05 FFT1342 DFW → ORD Jul 5, 18:55 UTCJul 5, 20:45 UTC1h 50m
2026-07-05 FFT3241 PHL → PBI Jul 5, 15:00 UTCJul 5, 17:00 UTC2h 0m
2026-07-05 FFT1441 ATL → ORD Jul 5, 11:05 UTCJul 5, 12:40 UTC1h 35m
2026-07-04 FFT2198 - Jul 4, 18:45 UTCJul 4, 20:10 UTC1h 25m

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 N663FR page for operator, model, and routing details .

Mode-S A8BFEB frequently asked

What is Mode-S code A8BFEB?
A8BFEB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N663FR.
Where is Mode-S A8BFEB registered?
Mode-S code A8BFEB 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 A8BFEB broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8BFEB, octal 52137753, decimal 11,059,179.
What flights does A8BFEB operate?
Mode-S A8BFEB has broadcast 20 distinct callsigns, including FFT4732, FFT4731, FFT2885, FFT1448, FFT4891.