Apparatus

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sensors Mode-S transponder

A8D635

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N669FR · operated by UMB BANK NA TRUSTEE

Hex
A8D635
Octal
52153065
Decimal
11,064,885
Country
US
Tail
N669FR
Type
A21N
Broadcasting now · callsign FFT3232 · 35,000 ft
Flights observed
478
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A8D635 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8D635 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
FFT1342 - 7 2026-06-18
FFT3241 Frontier Airlines 5 2026-06-18
FFT2494 Frontier Airlines 5 2026-05-15
FFT2428 Frontier Airlines 5 2026-06-12
FFT2174 Frontier Airlines 5 2026-05-23
FFT2173 Frontier Airlines 5 2026-05-23
FFT1949 Frontier Airlines 5 2026-05-04
FFT4963 - 4 2026-07-05
FFT45 - 4 2026-06-19
FFT3923 Frontier Airlines 4 2026-04-18
FFT3512 Frontier Airlines 4 2026-06-14
FFT3136 Frontier Airlines 4 2026-06-20
FFT3067 - 4 2026-07-04
FFT3044 Frontier Airlines 4 2026-06-18
FFT2634 Frontier Airlines 4 2026-07-03
FFT2410 Frontier Airlines 4 2026-04-16
FFT2349 - 4 2026-07-13
FFT1756 - 4 2026-07-06
FFT1601 Frontier Airlines 4 2026-06-09
FFT1269 Frontier Airlines 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FFT3232 - Jul 14, 02:25 UTCJul 14, 03:15 UTC50m
2026-07-13 FFT2349 DEN → LAS Jul 13, 22:35 UTCJul 14, 00:05 UTC1h 30m
2026-07-13 FFT2349 DEN → LAS Jul 13, 22:38 UTCJul 14, 00:00 UTC1h 22m
2026-07-13 FFT3199 MSP → DEN Jul 13, 18:30 UTCJul 13, 19:49 UTC1h 19m
2026-07-13 FFT3199 MSP → DEN Jul 13, 18:25 UTCJul 13, 19:50 UTC1h 25m
2026-07-13 FFT1150 DEN → MSP Jul 13, 15:30 UTCJul 13, 17:10 UTC1h 40m
2026-07-13 FFT1279 - Jul 13, 10:10 UTCJul 13, 13:45 UTC3h 35m
2026-07-13 FFT1665 - Jul 13, 00:30 UTCJul 13, 02:45 UTC2h 15m
2026-07-12 FFT2940 MIA → BWI Jul 12, 20:10 UTCJul 12, 22:35 UTC2h 25m
2026-07-12 FFT67 - Jul 12, 12:10 UTCJul 12, 18:05 UTC5h 55m
2026-07-12 FFT3442 ATL → MIA Jul 12, 04:55 UTCJul 12, 06:25 UTC1h 30m
2026-07-12 FFT4405 - Jul 12, 00:50 UTCJul 12, 02:15 UTC1h 25m
2026-07-12 FFT4405 MIA → ATL Jul 12, 00:46 UTCJul 12, 02:11 UTC1h 25m
2026-07-11 FFT8103 PUJ → MIA Jul 11, 15:00 UTCJul 11, 21:15 UTC6h 15m
2026-07-11 FFT3377 - Jul 11, 11:40 UTCJul 11, 12:05 UTC25m
2026-07-11 FFT3377 - Jul 11, 09:50 UTCJul 11, 10:10 UTC20m
2026-07-11 FFT3378 - Jul 11, 03:50 UTCJul 11, 04:01 UTC10m
2026-07-11 FFT3378 - Jul 11, 01:50 UTCJul 11, 02:20 UTC30m
2026-07-10 FFT2335 - Jul 10, 22:35 UTCJul 11, 00:10 UTC1h 35m
2026-07-10 FFT3322 - Jul 10, 19:20 UTCJul 10, 21:00 UTC1h 40m
2026-07-10 FFT2676 - Jul 10, 15:35 UTCJul 10, 18:00 UTC2h 25m
2026-07-10 FFT2676 DFW → MIA Jul 10, 15:12 UTCJul 10, 17:57 UTC2h 45m
2026-07-10 FFT2135 - Jul 10, 11:10 UTCJul 10, 13:45 UTC2h 35m
2026-07-09 FFT67 - Jul 9, 12:25 UTCJul 9, 18:00 UTC5h 35m
2026-07-09 FFT1280 DEN → MIA Jul 9, 05:50 UTCJul 9, 09:10 UTC3h 20m
2026-07-09 FFT1280 DEN → MIA Jul 9, 05:53 UTCJul 9, 09:07 UTC3h 14m
2026-07-08 FFT3540 - Jul 8, 23:45 UTCJul 9, 01:05 UTC1h 20m
2026-07-08 FFT3540 DEN → LAS Jul 8, 19:05 UTCJul 8, 20:35 UTC1h 30m
2026-07-08 FFT3156 - Jul 8, 13:50 UTCJul 8, 15:40 UTC1h 50m
2026-07-08 FFT4345 - Jul 8, 05:15 UTCJul 8, 07:10 UTC1h 55m
2026-07-08 FFT2142 PHX → DEN Jul 8, 00:50 UTCJul 8, 02:15 UTC1h 25m
2026-07-07 FFT1747 DEN → PHX Jul 7, 21:30 UTCJul 7, 23:00 UTC1h 30m
2026-07-07 FFT1747 DEN → PHX Jul 7, 21:07 UTCJul 7, 22:56 UTC1h 49m
2026-07-07 FFT4990 - Jul 7, 18:05 UTCJul 7, 20:00 UTC1h 55m
2026-07-07 FFT2421 - Jul 7, 13:55 UTCJul 7, 16:15 UTC2h 20m
2026-07-07 FFT3205 - Jul 7, 03:35 UTCJul 7, 05:40 UTC2h 5m
2026-07-07 FFT3228 - Jul 7, 00:05 UTCJul 7, 01:55 UTC1h 50m
2026-07-06 FFT3406 SEA → DEN Jul 6, 20:05 UTCJul 6, 22:20 UTC2h 15m
2026-07-06 FFT1175 DEN → SEA Jul 6, 15:25 UTCJul 6, 17:45 UTC2h 20m
2026-07-06 FFT3229 - Jul 6, 11:40 UTCJul 6, 13:35 UTC1h 55m
2026-07-06 FFT1756 - Jul 6, 01:40 UTCJul 6, 04:35 UTC2h 55m
2026-07-05 FFT4963 DFW → LAX Jul 5, 21:20 UTCJul 6, 00:25 UTC3h 5m
2026-07-05 FFT4963 DFW → LAX Jul 5, 21:23 UTCJul 6, 00:00 UTC2h 37m
2026-07-05 FFT2274 LAX → DFW Jul 5, 16:55 UTCJul 5, 19:30 UTC2h 35m
2026-07-05 FFT2273 - Jul 5, 12:40 UTCJul 5, 15:25 UTC2h 45m
2026-07-05 FFT1406 ONT → DFW Jul 5, 02:35 UTCJul 5, 05:00 UTC2h 25m
2026-07-04 FFT3131 - Jul 4, 22:50 UTCJul 5, 01:30 UTC2h 40m
2026-07-04 FFT1495 - Jul 4, 17:25 UTCJul 4, 19:35 UTC2h 10m
2026-07-04 FFT1496 - Jul 4, 13:30 UTCJul 4, 15:45 UTC2h 15m
2026-07-04 FFT1403 - Jul 4, 10:20 UTCJul 4, 11:50 UTC1h 30m

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 N669FR page for operator, model, and routing details .

Mode-S A8D635 frequently asked

What is Mode-S code A8D635?
A8D635 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N669FR.
Where is Mode-S A8D635 registered?
Mode-S code A8D635 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 A8D635 broadcasting right now?
Yes. Mode-S A8D635 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8D635, octal 52153065, decimal 11,064,885.
What flights does A8D635 operate?
Mode-S A8D635 has broadcast 20 distinct callsigns, including FFT1342, FFT3241, FFT2494, FFT2428, FFT2174.