Apparatus

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sensors Mode-S transponder

A3C900

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N343FR · AIRBUS A-320neo · operated by WELLS FARGO TRUST CO NA TRUSTEE

Hex
A3C900
Octal
50744400
Decimal
10,733,824
Country
US
Tail
N343FR
Type
A20N
Broadcasting now · callsign FFT3312 · 22,850 ft
Flights observed
510
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:50 UTC

Current position

A3C900 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A3C900 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
FFT2291 Frontier Airlines 8 2026-06-12
FFT685 - 7 2026-06-19
FFT4726 Frontier Airlines 7 2026-07-22
FFT3378 - 6 2026-07-12
FFT2981 Frontier Airlines 6 2026-04-16
FFT3862 - 5 2026-06-18
FFT2452 Frontier Airlines 5 2026-07-23
FFT2292 Frontier Airlines 5 2026-06-12
FFT1263 Frontier Airlines 5 2026-06-13
FFT4725 Frontier Airlines 4 2026-04-16
FFT4601 - 4 2026-07-13
FFT3512 Frontier Airlines 4 2026-06-15
FFT3383 - 4 2026-06-25
FFT3059 - 4 2026-07-12
FFT3014 Frontier Airlines 4 2026-06-11
FFT2780 Frontier Airlines 4 2026-05-19
FFT2615 Frontier Airlines 4 2026-07-24
FFT2400 Frontier Airlines 4 2026-06-03
FFT2272 - 4 2026-07-11
FFT2250 - 4 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT1318 CVG → RSW Jul 26, 18:50 UTCJul 26, 20:45 UTC1h 55m
2026-07-26 FFT1565 MCO → CVG Jul 26, 15:40 UTCJul 26, 17:35 UTC1h 55m
2026-07-26 FFT1432 MSY → MCO Jul 26, 12:45 UTCJul 26, 14:10 UTC1h 25m
2026-07-26 FFT1432 MSY → MCO Jul 26, 12:48 UTCJul 26, 14:09 UTC1h 21m
2026-07-26 FFT3553 MCO → MSY Jul 26, 10:05 UTCJul 26, 11:25 UTC1h 20m
2026-07-26 FFT1540 IND → MCO Jul 26, 01:25 UTCJul 26, 03:05 UTC1h 40m
2026-07-25 FFT4837 MCO → IND Jul 25, 22:20 UTCJul 26, 00:25 UTC2h 5m
2026-07-25 FFT47 SXM → MCO Jul 25, 12:20 UTCJul 25, 19:50 UTC7h 30m
2026-07-25 FFT2287 BOS → PHL Jul 25, 01:55 UTCJul 25, 03:30 UTC1h 35m
2026-07-25 FFT2287 BOS → PHL Jul 25, 02:06 UTCJul 25, 03:24 UTC1h 18m
2026-07-24 FFT2288 MCO → ORF Jul 24, 23:20 UTCJul 25, 00:55 UTC1h 35m
2026-07-24 FFT1445 CLT → MCO Jul 24, 20:45 UTCJul 24, 21:50 UTC1h 5m
2026-07-24 FFT1445 CLT → MCO Jul 24, 20:03 UTCJul 24, 21:49 UTC1h 46m
2026-07-24 FFT1446 MCO → CLT Jul 24, 17:15 UTCJul 24, 18:25 UTC1h 10m
2026-07-24 FFT1056 CLE → MCO Jul 24, 13:15 UTCJul 24, 15:10 UTC1h 55m
2026-07-24 FFT1915 MCO → CLE Jul 24, 09:25 UTCJul 24, 11:30 UTC2h 5m
2026-07-24 FFT2615 LGA → MCO Jul 24, 02:05 UTCJul 24, 04:05 UTC2h 0m
2026-07-24 FFT2615 LGA → MCO Jul 24, 01:57 UTCJul 24, 04:04 UTC2h 7m
2026-07-23 FFT3134 CLT → LGA Jul 23, 23:30 UTCJul 24, 00:50 UTC1h 20m
2026-07-23 FFT2452 DEN → MSY Jul 23, 20:40 UTCJul 23, 21:50 UTC1h 10m
2026-07-23 FFT362 DEN → SDF Jul 23, 15:43 UTCJul 23, 18:19 UTC2h 36m
2026-07-23 FFT362 DEN → SDF Jul 23, 12:35 UTCJul 23, 18:20 UTC5h 45m
2026-07-22 FFT1785 - Jul 22, 22:40 UTCJul 22, 23:55 UTC1h 15m
2026-07-22 FFT1785 RDU → MCO Jul 22, 22:24 UTCJul 22, 23:50 UTC1h 26m
2026-07-22 FFT1234 MCO → RDU Jul 22, 20:00 UTCJul 22, 21:20 UTC1h 20m
2026-07-22 FFT4524 AUS → MCO Jul 22, 16:00 UTCJul 22, 18:15 UTC2h 15m
2026-07-22 FFT4523 MCO → AUS Jul 22, 11:55 UTCJul 22, 14:05 UTC2h 10m
2026-07-22 FFT4726 MCO → SJU Jul 22, 03:25 UTCJul 22, 04:00 UTC35m
2026-07-22 FFT4726 MCO → SJU Jul 22, 03:30 UTCJul 22, 05:49 UTC2h 19m
2026-07-21 FFT9843 MIA → CVG Jul 21, 22:15 UTCJul 21, 23:45 UTC1h 30m
2026-07-21 FFT9843 MIA → CVG Jul 21, 21:46 UTCJul 21, 23:44 UTC1h 58m
2026-07-21 FFT2452 DEN → MSY Jul 21, 18:45 UTCJul 21, 20:05 UTC1h 20m
2026-07-21 FFT4190 CMH → MCO Jul 21, 15:30 UTCJul 21, 17:15 UTC1h 45m
2026-07-21 FFT1611 BDL → RDU Jul 21, 11:50 UTCJul 21, 13:40 UTC1h 50m
2026-07-20 FFT186 GUA → MCO Jul 20, 23:25 UTCJul 21, 02:00 UTC2h 34m
2026-07-20 FFT187 MCO → GUA Jul 20, 19:45 UTCJul 20, 22:10 UTC2h 25m
2026-07-20 FFT4454 IND → MCO Jul 20, 15:30 UTCJul 20, 17:20 UTC1h 50m
2026-07-20 FFT3761 MDW → ATL Jul 20, 12:25 UTCJul 20, 14:30 UTC2h 5m
2026-07-20 FFT1823 SJU → MCO Jul 20, 09:15 UTCJul 20, 10:00 UTC45m
2026-07-20 FFT1823 SJU → MCO Jul 20, 07:30 UTCJul 20, 07:40 UTC10m
2026-07-20 FFT4726 MCO → SJU Jul 20, 03:35 UTCJul 20, 06:10 UTC2h 35m
2026-07-20 FFT4726 MCO → SJU Jul 20, 03:45 UTCJul 20, 06:05 UTC2h 20m
2026-07-20 FFT1233 RDU → MCO Jul 20, 00:15 UTCJul 20, 01:30 UTC1h 15m
2026-07-19 FFT2979 PHX → PDX Jul 19, 21:45 UTCJul 19, 23:00 UTC1h 15m
2026-07-19 FFT3262 MCO → BUF Jul 19, 18:30 UTCJul 19, 20:40 UTC2h 10m
2026-07-19 FFT2834 - Jul 19, 14:10 UTCJul 19, 16:20 UTC2h 10m
2026-07-19 FFT2833 MCO → MKE Jul 19, 10:30 UTCJul 19, 12:55 UTC2h 25m
2026-07-18 FFT4524 AUS → MCO Jul 18, 22:35 UTCJul 19, 00:45 UTC2h 10m
2026-07-18 FFT4523 MCO → AUS Jul 18, 18:50 UTCJul 18, 20:55 UTC2h 5m
2026-07-18 FFT3941 ISP → MCO Jul 18, 15:00 UTCJul 18, 17:15 UTC2h 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 N343FR page for operator, model, and routing details .

Mode-S A3C900 frequently asked

What is Mode-S code A3C900?
A3C900 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N343FR.
Where is Mode-S A3C900 registered?
Mode-S code A3C900 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 A3C900 broadcasting right now?
Yes. Mode-S A3C900 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3C900, octal 50744400, decimal 10,733,824.
What flights does A3C900 operate?
Mode-S A3C900 has broadcast 20 distinct callsigns, including FFT2291, FFT685, FFT4726, FFT3378, FFT2981.