Apparatus

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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
Broadcasting now · callsign FFT2633 · 33,000 ft
Flights observed
534
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:20 UTC

Current position

A8BFEB is currently broadcasting. Map zoomed to live position.

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
FFT3346 - 4 2026-07-18
FFT3345 Frontier Airlines 4 2026-07-20
FFT2636 - 4 2026-07-17
FFT2538 - 4 2026-07-01
FFT1993 Frontier Airlines 4 2026-07-25
FFT1957 Frontier Airlines 4 2026-06-17
FFT1853 - 4 2026-07-01
FFT1660 Frontier Airlines 4 2026-05-09
FFT1403 - 4 2026-07-14
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT1590 SJC → LAS Jul 26, 21:15 UTCJul 26, 22:15 UTC1h 0m
2026-07-26 FFT4103 LAS → SJC Jul 26, 18:40 UTCJul 26, 19:40 UTC1h 0m
2026-07-26 FFT3231 CLE → LAS Jul 26, 13:15 UTCJul 26, 16:55 UTC3h 40m
2026-07-26 FFT3231 CLE → LAS Jul 26, 13:10 UTCJul 26, 16:54 UTC3h 44m
2026-07-26 FFT4966 LAS → CLE Jul 26, 07:40 UTCJul 26, 11:10 UTC3h 30m
2026-07-25 FFT1590 SJC → LAS Jul 25, 22:35 UTCJul 25, 23:40 UTC1h 5m
2026-07-25 FFT4103 LAS → SJC Jul 25, 20:30 UTCJul 25, 21:30 UTC1h 0m
2026-07-25 FFT4103 LAS → SJC Jul 25, 20:19 UTCJul 25, 21:27 UTC1h 8m
2026-07-25 FFT1993 DEN → LAS Jul 25, 16:25 UTCJul 25, 17:50 UTC1h 25m
2026-07-25 FFT1449 ATL → DEN Jul 25, 11:55 UTCJul 25, 14:30 UTC2h 35m
2026-07-25 FFT2608 PHX → ATL Jul 25, 06:40 UTCJul 25, 10:15 UTC3h 35m
2026-07-25 FFT2697 CLE → PHX Jul 25, 01:25 UTCJul 25, 05:05 UTC3h 40m
2026-07-24 FFT2698 PHX → CLE Jul 24, 19:40 UTCJul 24, 23:10 UTC3h 30m
2026-07-24 FFT4048 LAS → PHX Jul 24, 17:20 UTCJul 24, 18:05 UTC45m
2026-07-24 FFT1019 PHX → LAS Jul 24, 15:00 UTCJul 24, 15:50 UTC50m
2026-07-24 FFT1896 LAS → PHX Jul 24, 05:45 UTCJul 24, 06:30 UTC45m
2026-07-24 FFT2017 CLE → LAS Jul 24, 00:20 UTCJul 24, 03:20 UTC3h 0m
2026-07-23 FFT3108 LAS → STL Jul 23, 20:10 UTCJul 23, 22:50 UTC2h 40m
2026-07-23 FFT4277 IAD → LAS Jul 23, 14:05 UTCJul 23, 18:15 UTC4h 10m
2026-07-23 FFT4278 SAN → DFW Jul 23, 07:50 UTCJul 23, 12:00 UTC4h 10m
2026-07-23 FFT4402 SFO → LAS Jul 23, 04:10 UTCJul 23, 05:15 UTC1h 5m
2026-07-23 FFT3801 MDW → DFW Jul 23, 01:30 UTCJul 23, 02:40 UTC1h 10m
2026-07-22 FFT4758 ONT → LAS Jul 22, 23:05 UTCJul 22, 23:45 UTC40m
2026-07-22 FFT2276 - Jul 22, 19:45 UTCJul 22, 22:00 UTC2h 15m
2026-07-22 FFT2407 LAS → SEA Jul 22, 14:50 UTCJul 22, 16:50 UTC2h 0m
2026-07-22 FFT1821 CLE → LAS Jul 22, 02:00 UTCJul 22, 05:25 UTC3h 25m
2026-07-21 FFT3232 LAS → CLE Jul 21, 20:55 UTCJul 22, 00:35 UTC3h 40m
2026-07-20 FFT3777 BNA → LAS Jul 20, 22:05 UTCJul 21, 01:20 UTC3h 15m
2026-07-20 FFT3778 MCO → TTN Jul 20, 17:30 UTCJul 20, 20:45 UTC3h 15m
2026-07-20 FFT3778 MCO → TTN Jul 20, 17:08 UTCJul 20, 20:42 UTC3h 34m
2026-07-20 FFT2145 - Jul 20, 12:50 UTCJul 20, 15:55 UTC3h 5m
2026-07-20 FFT3345 SJU → ORD Jul 20, 01:25 UTCJul 20, 04:10 UTC2h 45m
2026-07-19 FFT3345 SJU → ORD Jul 19, 23:35 UTCJul 19, 23:50 UTC15m
2026-07-19 FFT4420 - Jul 19, 18:05 UTCJul 19, 21:35 UTC3h 30m
2026-07-19 FFT3937 SJU → BDL Jul 19, 13:00 UTCJul 19, 16:35 UTC3h 35m
2026-07-19 FFT3937 SJU → BDL Jul 19, 12:58 UTCJul 19, 16:33 UTC3h 35m
2026-07-19 FFT240 - Jul 19, 02:20 UTCJul 19, 02:30 UTC10m
2026-07-18 FFT241 - Jul 18, 23:30 UTCJul 18, 23:40 UTC10m
2026-07-18 FFT3346 - Jul 18, 18:05 UTCJul 18, 18:25 UTC20m
2026-07-18 FFT3346 - Jul 18, 14:15 UTCJul 18, 16:00 UTC1h 45m
2026-07-18 FFT2791 MCO → ORD Jul 18, 02:14 UTCJul 18, 04:35 UTC2h 21m
2026-07-17 FFT2636 STL → MCO Jul 17, 21:55 UTCJul 18, 00:04 UTC2h 10m
2026-07-17 FFT7 - Jul 17, 16:19 UTCJul 17, 19:45 UTC3h 25m
2026-07-17 FFT239 - Jul 17, 13:40 UTCJul 17, 13:55 UTC15m
2026-07-17 FFT3346 - Jul 17, 09:50 UTCJul 17, 10:10 UTC20m
2026-07-17 FFT3346 - Jul 17, 06:00 UTCJul 17, 07:50 UTC1h 50m
2026-07-17 FFT2791 MCO → ORD Jul 17, 01:05 UTCJul 17, 03:34 UTC2h 30m
2026-07-16 FFT2636 STL → MCO Jul 16, 21:25 UTCJul 16, 23:29 UTC2h 5m
2026-07-16 FFT87 CUN → STL Jul 16, 16:09 UTCJul 16, 18:50 UTC2h 40m
2026-07-16 FFT44 ORD → CUN Jul 16, 11:25 UTCJul 16, 14:40 UTC3h 15m

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?
Yes. Mode-S A8BFEB is currently airborne.
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.