Apparatus

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sensors Mode-S transponder

A85493

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N636FR · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A85493
Octal
52052223
Decimal
11,031,699
Country
US
Tail
N636FR
Type
A21N
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
492
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A85493.

Country allocation

The ICAO 24-bit address A85493 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
FFT3735 Frontier Airlines 6 2026-05-08
FFT1101 - 6 2026-07-13
FFT2695 - 5 2026-07-11
FFT2356 Frontier Airlines 5 2026-07-21
FFT1774 - 5 2026-07-10
FFT1726 - 5 2026-07-10
FFT1441 - 5 2026-07-04
FFT1361 Frontier Airlines 5 2026-07-26
FFT1040 Frontier Airlines 5 2026-05-02
FFT4794 Frontier Airlines 4 2026-05-10
FFT4455 - 4 2026-07-12
FFT3736 Frontier Airlines 4 2026-05-08
FFT3287 Frontier Airlines 4 2026-06-09
FFT2940 Frontier Airlines 4 2026-07-24
FFT1993 - 4 2026-07-01
FFT1816 - 4 2026-07-17
FFT1665 Frontier Airlines 4 2026-07-25
FFT1449 - 4 2026-07-17
FFT1150 Frontier Airlines 4 2026-07-25
FFT4968 - 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT3286 DEN → CVG Jul 26, 21:05 UTCJul 26, 22:45 UTC1h 40m
2026-07-26 FFT4990 SAN → DEN Jul 26, 17:10 UTCJul 26, 19:05 UTC1h 55m
2026-07-26 FFT2421 DEN → SAN Jul 26, 13:50 UTCJul 26, 15:45 UTC1h 55m
2026-07-26 FFT1361 CLT → DEN Jul 26, 02:25 UTCJul 26, 05:20 UTC2h 55m
2026-07-26 FFT1361 CLT → DEN Jul 26, 02:27 UTCJul 26, 05:17 UTC2h 50m
2026-07-25 FFT1362 DEN → CLT Jul 25, 22:05 UTCJul 26, 00:45 UTC2h 40m
2026-07-25 FFT3199 PHL → MCO Jul 25, 18:30 UTCJul 25, 19:53 UTC1h 23m
2026-07-25 FFT3199 PHL → MCO Jul 25, 18:20 UTCJul 25, 19:55 UTC1h 35m
2026-07-25 FFT1150 DEN → MSP Jul 25, 15:25 UTCJul 25, 16:55 UTC1h 30m
2026-07-25 FFT1150 DEN → MSP Jul 25, 15:31 UTCJul 25, 16:54 UTC1h 23m
2026-07-25 FFT1279 MIA → DEN Jul 25, 10:10 UTCJul 25, 13:35 UTC3h 25m
2026-07-25 FFT1665 LGA → MCO Jul 25, 00:55 UTCJul 25, 03:00 UTC2h 5m
2026-07-25 FFT1665 LGA → MCO Jul 25, 00:37 UTCJul 25, 02:53 UTC2h 16m
2026-07-24 FFT2940 MIA → BWI Jul 24, 21:10 UTCJul 24, 23:25 UTC2h 15m
2026-07-24 FFT67 PUJ → MIA Jul 24, 12:55 UTCJul 24, 18:40 UTC5h 45m
2026-07-24 FFT1280 DEN → MIA Jul 24, 06:00 UTCJul 24, 09:25 UTC3h 25m
2026-07-24 FFT2347 PHL → PBI Jul 24, 01:15 UTCJul 24, 03:35 UTC2h 20m
2026-07-23 FFT2348 PBI → PHL Jul 23, 22:10 UTCJul 24, 00:05 UTC1h 55m
2026-07-23 FFT3199 PHL → MCO Jul 23, 19:00 UTCJul 23, 20:40 UTC1h 40m
2026-07-23 FFT1150 DEN → MSP Jul 23, 16:20 UTCJul 23, 17:45 UTC1h 25m
2026-07-23 FFT1150 DEN → MSP Jul 23, 16:13 UTCJul 23, 17:44 UTC1h 31m
2026-07-23 FFT1279 MIA → DEN Jul 23, 10:15 UTCJul 23, 13:50 UTC3h 35m
2026-07-22 FFT1665 LGA → MCO Jul 22, 23:45 UTCJul 23, 02:00 UTC2h 15m
2026-07-22 FFT2940 MIA → BWI Jul 22, 20:00 UTCJul 22, 22:15 UTC2h 15m
2026-07-22 FFT67 PUJ → MIA Jul 22, 12:05 UTCJul 22, 18:10 UTC6h 5m
2026-07-22 FFT3707 SAT → DEN Jul 22, 00:45 UTCJul 22, 02:30 UTC1h 45m
2026-07-21 FFT2356 RSW → PHL Jul 21, 21:45 UTCJul 21, 23:25 UTC1h 40m
2026-07-21 FFT2356 RSW → PHL Jul 21, 21:43 UTCJul 21, 23:22 UTC1h 39m
2026-07-21 FFT2225 - Jul 21, 16:55 UTCJul 21, 20:00 UTC3h 5m
2026-07-21 FFT2440 DEN → RDU Jul 21, 12:20 UTCJul 21, 15:35 UTC3h 15m
2026-07-20 FFT3227 - Jul 20, 23:20 UTCJul 21, 01:15 UTC1h 54m
2026-07-20 FFT317 CUN → IAH Jul 20, 19:15 UTCJul 20, 21:00 UTC1h 45m
2026-07-20 FFT70 DEN → CUN Jul 20, 14:00 UTCJul 20, 17:40 UTC3h 40m
2026-07-20 F9MX636 DEN → DEN Jul 20, 09:45 UTCJul 20, 09:50 UTC5m
2026-07-20 FFT3707 SAT → DEN Jul 20, 00:55 UTCJul 20, 02:45 UTC1h 50m
2026-07-19 FFT2356 RSW → PHL Jul 19, 21:43 UTCJul 19, 23:22 UTC1h 39m
2026-07-19 FFT2356 RSW → PHL Jul 19, 21:35 UTCJul 19, 23:25 UTC1h 50m
2026-07-19 FFT2225 - Jul 19, 16:35 UTCJul 19, 19:35 UTC3h 0m
2026-07-19 FFT2440 DEN → RDU Jul 19, 12:15 UTCJul 19, 15:05 UTC2h 50m
2026-07-19 FFT3707 SAT → DEN Jul 19, 00:40 UTCJul 19, 02:30 UTC1h 50m
2026-07-18 FFT2356 RSW → PHL Jul 18, 21:40 UTCJul 18, 23:25 UTC1h 45m
2026-07-18 FFT2225 - Jul 18, 16:35 UTCJul 18, 19:30 UTC2h 55m
2026-07-18 FFT2440 DEN → RDU Jul 18, 12:20 UTCJul 18, 15:10 UTC2h 50m
2026-07-18 FFT1483 DPA → DEN Jul 18, 04:40 UTCJul 18, 06:30 UTC1h 50m
2026-07-18 FFT1483 ORD → DEN Jul 18, 04:41 UTCJul 18, 06:30 UTC1h 49m
2026-07-18 FFT3174 CLE → PHL Jul 18, 00:50 UTCJul 18, 02:55 UTC2h 6m
2026-07-17 FFT2047 AUS → DEN Jul 17, 20:04 UTCJul 17, 21:50 UTC1h 45m
2026-07-17 FFT2047 AUS → DEN Jul 17, 19:35 UTCJul 17, 21:44 UTC2h 9m
2026-07-17 FFT1816 DEN → AUS Jul 17, 16:40 UTCJul 17, 18:25 UTC1h 45m
2026-07-17 FFT1816 DEN → AUS Jul 17, 16:28 UTCJul 17, 18:24 UTC1h 56m

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 N636FR page for operator, model, and routing details .

Mode-S A85493 frequently asked

What is Mode-S code A85493?
A85493 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N636FR.
Where is Mode-S A85493 registered?
Mode-S code A85493 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 A85493 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A85493, octal 52052223, decimal 11,031,699.
What flights does A85493 operate?
Mode-S A85493 has broadcast 20 distinct callsigns, including FFT3735, FFT1101, FFT2695, FFT2356, FFT1774.