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
Broadcasting now · callsign FFT2742 · 22,725 ft
Flights observed
158
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Current position

A4DFD2 is currently broadcasting. Map zoomed to live position.

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
FFT1746 Frontier Airlines 7 2026-06-08
FFT3306 Frontier Airlines 5 2026-06-07
FFT1165 Frontier Airlines 5 2026-06-05
FFT4462 Frontier Airlines 4 2026-06-06
FFT3305 Frontier Airlines 4 2026-06-07
FFT4725 Frontier Airlines 3 2026-06-07
FFT3004 Frontier Airlines 3 2026-06-08
FFT9413 Frontier Airlines 2 2026-05-24
FFT9313 Frontier Airlines 2 2026-05-28
FFT686 Frontier Airlines 2 2026-05-13
FFT4916 Frontier Airlines 2 2026-04-30
FFT4726 Frontier Airlines 2 2026-04-28
FFT4559 Frontier Airlines 2 2026-05-11
FFT4496 Frontier Airlines 2 2026-05-07
FFT4495 Frontier Airlines 2 2026-05-08
FFT4420 Frontier Airlines 2 2026-05-01
FFT4419 Frontier Airlines 2 2026-05-03
FFT4107 Frontier Airlines 2 2026-05-10
FFT4017 Frontier Airlines 2 2026-06-12
FFT3980 Frontier Airlines 2 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 FFT1654 - Jun 12, 23:20 UTCJun 13, 01:40 UTC2h 20m
2026-06-12 FFT1653 - Jun 12, 18:01 UTCJun 12, 20:15 UTC2h 15m
2026-06-12 FFT1482 DFW → MCO Jun 12, 13:55 UTCJun 12, 16:00 UTC2h 5m
2026-06-12 FFT4017 BOS → PHL Jun 12, 10:00 UTCJun 12, 12:15 UTC2h 15m
2026-06-11 FFT2636 STL → MCO Jun 11, 23:35 UTCJun 12, 01:25 UTC1h 51m
2026-06-11 FFT87 SJO → DEN Jun 11, 13:40 UTCJun 11, 21:45 UTC8h 5m
2026-06-11 FFT3397 ATL → ORD Jun 11, 10:25 UTCJun 11, 11:50 UTC1h 25m
2026-06-10 FFT2198 ORD → ATL Jun 10, 18:45 UTCJun 10, 20:10 UTC1h 25m
2026-06-10 FFT2198 ORD → ATL Jun 10, 18:44 UTCJun 10, 20:09 UTC1h 25m
2026-06-10 FFT2206 FLL → ORD Jun 10, 14:05 UTCJun 10, 16:45 UTC2h 40m
2026-06-10 FFT3017 SJU → FLL Jun 10, 12:15 UTCJun 10, 12:45 UTC30m
2026-06-10 FFT3017 SJU → FLL Jun 10, 10:10 UTCJun 10, 10:30 UTC20m
2026-06-10 FFT1726 PHL → SJU Jun 10, 04:10 UTCJun 10, 07:25 UTC3h 15m
2026-06-09 FFT2072 RDU → PHL Jun 9, 23:05 UTCJun 10, 00:00 UTC55m
2026-06-09 FFT2071 PHL → RDU Jun 9, 21:05 UTCJun 9, 22:00 UTC55m
2026-06-09 FFT2071 PHL → RDU Jun 9, 20:52 UTCJun 9, 21:56 UTC1h 4m
2026-06-09 FFT2538 TPA → PHL Jun 9, 17:50 UTCJun 9, 19:55 UTC2h 5m
2026-06-09 FFT3782 DTW → ATL Jun 9, 15:25 UTCJun 9, 15:50 UTC25m
2026-06-09 FFT2551 ATL → TPA Jun 9, 10:45 UTCJun 9, 12:20 UTC1h 35m
2026-06-09 FFT2695 BWI → DFW Jun 9, 02:00 UTCJun 9, 02:40 UTC40m
2026-06-08 FFT2695 BWI → DFW Jun 8, 23:10 UTCJun 8, 23:20 UTC10m
2026-06-08 FFT3004 CLT → SJU Jun 8, 20:20 UTCJun 8, 20:40 UTC20m
2026-06-08 FFT3004 CLT → SJU Jun 8, 17:40 UTCJun 8, 18:50 UTC1h 10m
2026-06-08 FFT3004 CLT → SJU Jun 8, 17:41 UTCJun 8, 20:39 UTC2h 58m
2026-06-08 FFT3003 SJU → CLT Jun 8, 12:50 UTCJun 8, 16:05 UTC3h 15m
2026-06-08 FFT1746 LAS → CLE Jun 8, 02:40 UTCJun 8, 03:00 UTC20m
2026-06-08 FFT1746 LAS → CLE Jun 8, 00:35 UTCJun 8, 01:10 UTC35m
2026-06-07 FFT4725 SJU → MCO Jun 7, 20:10 UTCJun 7, 22:50 UTC2h 40m
2026-06-07 FFT3306 JAX → SJU Jun 7, 15:40 UTCJun 7, 18:15 UTC2h 35m
2026-06-07 FFT3305 SJU → JAX Jun 7, 11:10 UTCJun 7, 14:10 UTC3h 0m
2026-06-07 FFT3980 TPA → SJU Jun 7, 03:40 UTCJun 7, 03:50 UTC10m
2026-06-07 FFT3980 TPA → SJU Jun 7, 01:15 UTCJun 7, 02:04 UTC50m
2026-06-06 FFT2541 SJU → TPA Jun 6, 21:00 UTCJun 6, 23:44 UTC2h 45m
2026-06-06 FFT1016 PHL → SJU Jun 6, 18:55 UTCJun 6, 19:10 UTC15m
2026-06-06 FFT1016 PHL → SJU Jun 6, 15:50 UTCJun 6, 16:20 UTC30m
2026-06-06 FFT1015 SJU → PHL Jun 6, 10:34 UTCJun 6, 14:04 UTC3h 30m
2026-06-06 FFT4462 PHL → SJU Jun 6, 03:25 UTCJun 6, 03:45 UTC20m
2026-06-06 FFT4462 PHL → SJU Jun 6, 00:30 UTCJun 6, 01:05 UTC35m
2026-06-05 FFT1165 PHL → MCO Jun 5, 22:10 UTCJun 5, 23:00 UTC50m
2026-06-05 FFT1165 PHL → MCO Jun 5, 19:25 UTCJun 5, 19:35 UTC10m
2026-06-05 FFT1165 PHL → MCO Jun 5, 19:25 UTCJun 5, 22:58 UTC3h 33m
2026-06-05 FFT3306 JAX → SJU Jun 5, 17:45 UTCJun 5, 18:10 UTC25m
2026-06-05 FFT3306 JAX → SJU Jun 5, 15:30 UTCJun 5, 16:15 UTC45m
2026-06-05 FFT3306 JAX → SJU Jun 5, 15:41 UTCJun 5, 18:11 UTC2h 30m
2026-06-05 FFT3305 SJU → JAX Jun 5, 11:10 UTCJun 5, 14:10 UTC3h 0m
2026-06-05 FFT3305 SJU → JAX Jun 5, 11:13 UTCJun 5, 14:08 UTC2h 55m
2026-06-05 FFT4462 PHL → SJU Jun 5, 03:10 UTCJun 5, 03:30 UTC20m
2026-06-05 FFT4462 PHL → SJU Jun 5, 00:20 UTCJun 5, 01:05 UTC45m
2026-06-04 FFT1165 PHL → MCO Jun 4, 22:00 UTCJun 4, 22:55 UTC55m
2026-06-04 FFT1165 PHL → MCO Jun 4, 19:25 UTCJun 4, 19:40 UTC15m

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?
Yes. Mode-S A4DFD2 is currently airborne.
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 FFT1746, FFT3306, FFT1165, FFT4462, FFT3305.