Apparatus

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sensors Mode-S transponder

A4B49C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N402FR · AIRBUS A-320neo · operated by FRONTIER AIRLINES INC.

Hex
A4B49C
Octal
51132234
Decimal
10,794,140
Country
US
Tail
N402FR
Type
A20N
Broadcasting now · callsign FFT1341 · 450 ft
Flights observed
545
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Current position

A4B49C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4B49C 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
FFT3306 Frontier Airlines 12 2026-05-30
FFT4725 Frontier Airlines 11 2026-05-30
FFT4420 Frontier Airlines 11 2026-05-20
FFT4419 Frontier Airlines 10 2026-05-20
FFT1746 Frontier Airlines 10 2026-05-31
FFT2695 Frontier Airlines 9 2026-06-10
FFT1016 Frontier Airlines 9 2026-05-31
FFT3980 Frontier Airlines 8 2026-06-01
FFT1015 Frontier Airlines 8 2026-05-31
FFT3305 Frontier Airlines 7 2026-05-30
FFT3004 Frontier Airlines 7 2026-06-10
FFT4462 Frontier Airlines 6 2026-05-24
FFT3985 Frontier Airlines 6 2026-06-08
FFT2250 Frontier Airlines 6 2026-05-23
FFT1928 - 6 2026-07-21
FFT4726 - 5 2026-07-13
FFT3003 Frontier Airlines 5 2026-06-10
FFT2541 Frontier Airlines 5 2026-05-31
FFT1726 Frontier Airlines 5 2026-06-11
FFT1482 - 5 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT3581 SNA → SFO Jul 26, 20:30 UTCJul 26, 21:00 UTC30m
2026-07-26 FFT1699 CVG → ATL Jul 26, 18:25 UTCJul 26, 19:10 UTC45m
2026-07-26 FFT4108 BUR → LAS Jul 26, 16:10 UTCJul 26, 16:55 UTC45m
2026-07-26 FFT4107 LAS → BUR Jul 26, 14:10 UTCJul 26, 14:50 UTC40m
2026-07-25 FFT1196 BUR → LAS Jul 25, 18:50 UTCJul 25, 19:35 UTC45m
2026-07-24 FFT1195 MCO → SAN Jul 24, 23:45 UTCJul 25, 00:35 UTC50m
2026-07-24 FFT2575 SLC → LAS Jul 24, 20:10 UTCJul 24, 21:10 UTC1h 0m
2026-07-24 FFT1268 LAX → SLC Jul 24, 17:50 UTCJul 24, 19:10 UTC1h 20m
2026-07-24 FFT3291 LAS → LAX Jul 24, 15:45 UTCJul 24, 16:30 UTC45m
2026-07-24 FFT3291 LAS → LAX Jul 24, 15:20 UTCJul 24, 16:24 UTC1h 4m
2026-07-24 FFT2015 CLE → LAS Jul 24, 12:25 UTCJul 24, 13:55 UTC1h 30m
2026-07-24 FFT1859 AUS → DEN Jul 24, 03:25 UTCJul 24, 05:05 UTC1h 40m
2026-07-24 FFT1816 DEN → AUS Jul 24, 00:25 UTCJul 24, 02:10 UTC1h 45m
2026-07-23 FFT3375 MCI → DEN Jul 23, 19:00 UTCJul 23, 20:20 UTC1h 20m
2026-07-23 FFT4828 DEN → MCI Jul 23, 16:35 UTCJul 23, 17:45 UTC1h 10m
2026-07-23 FFT1500 ONT → DEN Jul 23, 13:10 UTCJul 23, 15:00 UTC1h 50m
2026-07-23 FFT1261 DEN → ONT Jul 23, 06:30 UTCJul 23, 08:20 UTC1h 50m
2026-07-23 FFT4567 STL → DEN Jul 23, 02:40 UTCJul 23, 04:40 UTC2h 0m
2026-07-22 FFT3302 DEN → STL Jul 22, 23:40 UTCJul 23, 01:20 UTC1h 40m
2026-07-22 FFT3666 SMF → DEN Jul 22, 18:25 UTCJul 22, 20:50 UTC2h 25m
2026-07-22 FFT3665 DEN → SMF Jul 22, 15:10 UTCJul 22, 17:05 UTC1h 55m
2026-07-22 FFT3229 IAH → DEN Jul 22, 11:50 UTCJul 22, 13:45 UTC1h 55m
2026-07-22 FFT2996 DEN → IAH Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-22 FFT1927 OKC → DEN Jul 22, 00:20 UTCJul 22, 01:30 UTC1h 10m
2026-07-22 FFT1927 OKC → DEN Jul 22, 00:25 UTCJul 22, 01:29 UTC1h 4m
2026-07-21 FFT1928 DEN → OKC Jul 21, 22:00 UTCJul 21, 23:10 UTC1h 10m
2026-07-21 FFT3565 DTW → DEN Jul 21, 17:30 UTCJul 21, 20:10 UTC2h 40m
2026-07-21 FFT3566 DEN → DTW Jul 21, 14:00 UTCJul 21, 16:15 UTC2h 15m
2026-07-21 FFT2016 LAS → DEN Jul 21, 08:30 UTCJul 21, 10:05 UTC1h 35m
2026-07-21 FFT777 DEN → LAS Jul 21, 04:45 UTCJul 21, 06:05 UTC1h 20m
2026-07-21 FFT1247 GRR → DEN Jul 21, 00:40 UTCJul 21, 03:10 UTC2h 30m
2026-07-20 FFT1248 DEN → GRR Jul 20, 21:20 UTCJul 20, 23:30 UTC2h 10m
2026-07-20 FFT1401 - Jul 20, 17:40 UTCJul 20, 19:55 UTC2h 15m
2026-07-20 FFT1402 DEN → BNA Jul 20, 14:10 UTCJul 20, 16:15 UTC2h 5m
2026-07-20 FFT3205 IAH → DEN Jul 20, 03:50 UTCJul 20, 05:40 UTC1h 50m
2026-07-20 FFT3228 - Jul 20, 00:00 UTCJul 20, 02:00 UTC2h 0m
2026-07-19 FFT1790 PDX → DEN Jul 19, 20:15 UTCJul 19, 22:40 UTC2h 25m
2026-07-19 FFT4499 - Jul 19, 17:45 UTCJul 19, 19:25 UTC1h 40m
2026-07-19 FFT3155 DEN → LAX Jul 19, 13:15 UTCJul 19, 15:00 UTC1h 45m
2026-07-18 FFT2908 ONT → DEN Jul 18, 19:30 UTCJul 18, 21:20 UTC1h 50m
2026-07-18 FFT2907 DEN → ONT Jul 18, 15:35 UTCJul 18, 17:20 UTC1h 45m
2026-07-18 FFT1733 CVG → PHX Jul 18, 11:00 UTCJul 18, 14:05 UTC3h 5m
2026-07-18 FFT1954 MCO → MCO Jul 18, 03:40 UTCJul 18, 09:45 UTC6h 5m
2026-07-18 FFT2451 - Jul 18, 00:10 UTCJul 18, 01:25 UTC1h 15m
2026-07-17 FFT3133 PHL → RDU Jul 17, 20:44 UTCJul 17, 22:10 UTC1h 25m
2026-07-17 FFT2432 TPA → CLE Jul 17, 17:20 UTCJul 17, 19:25 UTC2h 5m
2026-07-17 FFT2432 TPA → CLE Jul 17, 17:23 UTCJul 17, 19:21 UTC1h 58m
2026-07-17 FFT2867 SJU → MCO Jul 17, 13:00 UTCJul 17, 15:35 UTC2h 35m
2026-07-17 FFT2867 SJU → MCO Jul 17, 13:05 UTCJul 17, 15:36 UTC2h 31m
2026-07-17 FFT3506 MCO → SJU Jul 17, 11:25 UTCJul 17, 11:45 UTC20m

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 N402FR page for operator, model, and routing details .

Mode-S A4B49C frequently asked

What is Mode-S code A4B49C?
A4B49C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N402FR.
Where is Mode-S A4B49C registered?
Mode-S code A4B49C 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 A4B49C broadcasting right now?
Yes. Mode-S A4B49C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4B49C, octal 51132234, decimal 10,794,140.
What flights does A4B49C operate?
Mode-S A4B49C has broadcast 20 distinct callsigns, including FFT3306, FFT4725, FFT4420, FFT4419, FFT1746.