Apparatus

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sensors Mode-S transponder

A4DFD2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N413FR · AIRBUS A-320neo · operated by FRONTIER AIRLINES INC.

Hex
A4DFD2
Octal
51157722
Decimal
10,805,202
Country
US
Tail
N413FR
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
413
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A4DFD2.

Country allocation

The ICAO 24-bit address A4DFD2 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 - 12 2026-07-02
FFT1746 - 12 2026-07-01
FFT1165 Frontier Airlines 10 2026-06-29
FFT4726 - 8 2026-07-06
FFT4462 - 7 2026-06-30
FFT3305 - 7 2026-07-02
FFT3004 - 7 2026-07-01
FFT4725 - 6 2026-07-02
FFT4685 Frontier Airlines 6 2026-07-09
FFT2695 - 6 2026-07-02
FFT2250 - 6 2026-06-29
FFT4686 - 5 2026-07-09
FFT4524 - 5 2026-07-11
FFT2249 - 5 2026-07-06
FFT1823 - 5 2026-07-06
FFT1726 - 5 2026-07-02
FFT2532 - 4 2026-07-20
FFT4556 Frontier Airlines 3 2026-07-08
FFT4523 - 3 2026-07-11
FFT3985 Frontier Airlines 3 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT25 ATL → PUJ Jul 26, 15:40 UTCJul 26, 22:30 UTC6h 50m
2026-07-26 FFT1270 DFW → ATL Jul 26, 11:30 UTCJul 26, 13:15 UTC1h 45m
2026-07-26 FFT3985 PHL → DFW Jul 26, 00:40 UTCJul 26, 03:40 UTC3h 0m
2026-07-26 FFT3985 PHL → DFW Jul 26, 00:40 UTCJul 26, 03:31 UTC2h 51m
2026-07-25 FFT2970 MDW → MCO Jul 25, 20:20 UTCJul 25, 23:10 UTC2h 50m
2026-07-25 FFT2970 MDW → MCO Jul 25, 20:15 UTCJul 25, 23:05 UTC2h 50m
2026-07-25 FFT3165 CLT → DFW Jul 25, 16:25 UTCJul 25, 18:35 UTC2h 10m
2026-07-25 FFT3110 DFW → CLT Jul 25, 12:50 UTCJul 25, 14:50 UTC2h 0m
2026-07-25 FFT3985 PHL → DFW Jul 25, 00:40 UTCJul 25, 03:35 UTC2h 55m
2026-07-24 FFT2970 MDW → MCO Jul 24, 20:20 UTCJul 24, 23:05 UTC2h 45m
2026-07-24 FFT3165 CLT → DFW Jul 24, 16:35 UTCJul 24, 18:40 UTC2h 5m
2026-07-24 FFT3110 DFW → CLT Jul 24, 12:45 UTCJul 24, 14:50 UTC2h 5m
2026-07-24 FFT1650 RDU → PHL Jul 24, 08:40 UTCJul 24, 10:50 UTC2h 10m
2026-07-24 FFT3885 DFW → LAS Jul 24, 05:00 UTCJul 24, 07:10 UTC2h 10m
2026-07-23 FFT3175 DTW → DFW Jul 23, 23:40 UTCJul 24, 01:50 UTC2h 10m
2026-07-23 FFT3990 SAN → DFW Jul 23, 19:55 UTCJul 23, 22:10 UTC2h 15m
2026-07-23 FFT3366 DEN → DFW Jul 23, 16:55 UTCJul 23, 18:25 UTC1h 30m
2026-07-23 FFT685 DCA → DEN Jul 23, 11:15 UTCJul 23, 14:40 UTC3h 25m
2026-07-23 FFT690 DEN → DCA Jul 23, 00:10 UTCJul 23, 03:00 UTC2h 50m
2026-07-22 FFT4793 FAR → DEN Jul 22, 19:35 UTCJul 22, 21:00 UTC1h 25m
2026-07-22 FFT4793 FAR → DEN Jul 22, 19:44 UTCJul 22, 20:59 UTC1h 15m
2026-07-22 FFT4794 DEN → FAR Jul 22, 16:55 UTCJul 22, 18:20 UTC1h 25m
2026-07-22 FFT3862 SLC → DEN Jul 22, 14:30 UTCJul 22, 15:35 UTC1h 5m
2026-07-22 FFT3862 SLC → DEN Jul 22, 14:28 UTCJul 22, 15:29 UTC1h 1m
2026-07-22 FFT3219 PHL → FLL Jul 22, 12:05 UTCJul 22, 13:10 UTC1h 5m
2026-07-21 FFT1449 ATL → DEN Jul 21, 12:00 UTCJul 21, 14:40 UTC2h 40m
2026-07-21 FFT2608 PHX → ATL Jul 21, 07:00 UTCJul 21, 10:25 UTC3h 25m
2026-07-21 FFT2608 PHX → ATL Jul 21, 06:53 UTCJul 21, 10:28 UTC3h 35m
2026-07-21 FFT4765 DEN → PHX Jul 21, 03:25 UTCJul 21, 05:20 UTC1h 55m
2026-07-21 FFT2142 LAS → PHL Jul 21, 00:30 UTCJul 21, 02:00 UTC1h 30m
2026-07-20 FFT1720 SNA → PHX Jul 20, 22:05 UTCJul 20, 23:05 UTC1h 0m
2026-07-20 FFT4957 - Jul 20, 20:20 UTCJul 20, 21:10 UTC50m
2026-07-20 FFT3971 DFW → PHX Jul 20, 17:15 UTCJul 20, 19:10 UTC1h 55m
2026-07-20 FFT2532 PHX → DFW Jul 20, 13:30 UTCJul 20, 15:35 UTC2h 5m
2026-07-20 FFT4753 DEN → PHX Jul 20, 04:45 UTCJul 20, 06:05 UTC1h 20m
2026-07-20 FFT1820 PHX → DEN Jul 20, 01:55 UTCJul 20, 03:20 UTC1h 25m
2026-07-19 FFT4578 SAN → PHX Jul 19, 23:15 UTCJul 20, 00:15 UTC1h 0m
2026-07-19 FFT1571 PHX → SAN Jul 19, 21:25 UTCJul 19, 22:10 UTC45m
2026-07-19 FFT3871 SLC → PHX Jul 19, 18:50 UTCJul 19, 20:05 UTC1h 15m
2026-07-19 FFT3872 PHX → SLC Jul 19, 16:31 UTCJul 19, 17:29 UTC58m
2026-07-19 FFT3872 PHX → SLC Jul 19, 16:20 UTCJul 19, 17:30 UTC1h 10m
2026-07-19 FFT2638 - Jul 19, 02:10 UTCJul 19, 03:45 UTC1h 35m
2026-07-18 FFT3393 SLC → SFO Jul 18, 23:10 UTCJul 19, 01:00 UTC1h 50m
2026-07-18 FFT2526 - Jul 18, 20:45 UTCJul 18, 22:10 UTC1h 25m
2026-07-18 FFT2526 PHX → SLC Jul 18, 20:49 UTCJul 18, 22:05 UTC1h 16m
2026-07-18 FFT3971 DFW → PHX Jul 18, 17:15 UTCJul 18, 19:15 UTC2h 0m
2026-07-18 FFT2532 - Jul 18, 13:40 UTCJul 18, 15:35 UTC1h 55m
2026-07-18 FFT2638 SFO → PHX Jul 18, 03:50 UTCJul 18, 05:30 UTC1h 40m
2026-07-18 FFT2638 SFO → PHX Jul 18, 03:36 UTCJul 18, 05:27 UTC1h 51m
2026-07-18 FFT3393 SLC → SFO Jul 18, 00:45 UTCJul 18, 02:35 UTC1h 50m

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 N413FR page for operator, model, and routing details .

Mode-S A4DFD2 frequently asked

What is Mode-S code A4DFD2?
A4DFD2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N413FR.
Where is Mode-S A4DFD2 registered?
Mode-S code A4DFD2 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 A4DFD2 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4DFD2, octal 51157722, decimal 10,805,202.
What flights does A4DFD2 operate?
Mode-S A4DFD2 has broadcast 20 distinct callsigns, including FFT3306, FFT1746, FFT1165, FFT4726, FFT4462.