Apparatus

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sensors Mode-S transponder

A54163

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N438FR · AIRBUS A-320neo · operated by FRONTIER AIRLINES INC.

Hex
A54163
Octal
51240543
Decimal
10,830,179
Country
US
Tail
N438FR
Type
A20N
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
550
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A54163.

Country allocation

The ICAO 24-bit address A54163 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
FFT3092 Frontier Airlines 14 2026-05-05
FFT3091 Frontier Airlines 14 2026-05-05
FFT2338 Frontier Airlines 12 2026-05-04
FFT4117 Frontier Airlines 11 2026-07-23
FFT2715 Frontier Airlines 11 2026-05-04
FFT4118 Frontier Airlines 10 2026-07-23
FFT3985 Frontier Airlines 9 2026-05-31
FFT1261 - 9 2026-07-09
FFT3175 Frontier Airlines 8 2026-05-31
FFT2970 Frontier Airlines 8 2026-05-31
FFT1500 - 8 2026-07-09
FFT4828 Frontier Airlines 7 2026-07-09
FFT3990 Frontier Airlines 7 2026-05-31
FFT3302 - 7 2026-07-07
FFT4567 - 6 2026-07-08
FFT2513 Frontier Airlines 6 2026-07-07
FFT3375 - 5 2026-07-09
FFT2514 Frontier Airlines 5 2026-07-07
FFT2284 Frontier Airlines 5 2026-05-11
FFT1863 - 5 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT2261 DEN → ELP Jul 26, 21:25 UTCJul 26, 22:30 UTC1h 5m
2026-07-26 FFT1401 BNA → DEN Jul 26, 17:25 UTCJul 26, 19:35 UTC2h 10m
2026-07-26 FFT1402 DEN → BNA Jul 26, 14:10 UTCJul 26, 16:20 UTC2h 10m
2026-07-26 FFT3599 ATL → DEN Jul 26, 04:20 UTCJul 26, 06:50 UTC2h 31m
2026-07-26 FFT3453 PHL → MIA Jul 26, 01:05 UTCJul 26, 02:50 UTC1h 45m
2026-07-25 FFT3454 MIA → PHL Jul 25, 19:35 UTCJul 25, 21:20 UTC1h 45m
2026-07-25 FFT3454 MIA → PHL Jul 25, 19:27 UTCJul 25, 21:15 UTC1h 48m
2026-07-25 FFT3071 ORF → ATL Jul 25, 16:35 UTCJul 25, 18:00 UTC1h 25m
2026-07-25 FFT3072 ATL → ORF Jul 25, 13:40 UTCJul 25, 14:55 UTC1h 15m
2026-07-25 FFT1263 DTW → ATL Jul 25, 10:20 UTCJul 25, 11:40 UTC1h 20m
2026-07-25 FFT1264 ATL → DTW Jul 25, 03:40 UTCJul 25, 05:00 UTC1h 20m
2026-07-24 FFT1079 BWI → ATL Jul 24, 23:55 UTCJul 25, 01:15 UTC1h 20m
2026-07-24 FFT1080 ATL → BWI Jul 24, 21:10 UTCJul 24, 22:45 UTC1h 35m
2026-07-24 FFT2144 LAS → PHL Jul 24, 17:25 UTCJul 24, 19:45 UTC2h 20m
2026-07-24 FFT2779 PHX → SNA Jul 24, 14:40 UTCJul 24, 16:10 UTC1h 30m
2026-07-24 FFT2467 CLE → ATL Jul 24, 10:50 UTCJul 24, 12:05 UTC1h 15m
2026-07-24 FFT2467 CLE → ATL Jul 24, 10:50 UTCJul 24, 12:04 UTC1h 14m
2026-07-24 FFT2184 TPA → CLE Jul 24, 02:40 UTCJul 24, 04:45 UTC2h 5m
2026-07-23 FFT1491 CLE → TPA Jul 23, 23:25 UTCJul 24, 01:20 UTC1h 55m
2026-07-23 FFT4118 MYR → CLE Jul 23, 20:40 UTCJul 23, 21:55 UTC1h 15m
2026-07-23 FFT4117 CLE → MYR Jul 23, 17:50 UTCJul 23, 19:05 UTC1h 15m
2026-07-23 FFT2410 ATL → CLE Jul 23, 15:10 UTCJul 23, 16:35 UTC1h 25m
2026-07-23 FFT4707 IAD → ATL Jul 23, 12:05 UTCJul 23, 13:25 UTC1h 20m
2026-07-23 FFT3692 ATL → IAD Jul 23, 01:50 UTCJul 23, 03:05 UTC1h 15m
2026-07-22 FFT2972 MSY → ATL Jul 22, 22:15 UTCJul 22, 23:20 UTC1h 5m
2026-07-22 FFT1371 MDW → DFW Jul 22, 20:00 UTCJul 22, 21:10 UTC1h 10m
2026-07-22 FFT1846 PHX → DTW Jul 22, 17:05 UTCJul 22, 18:10 UTC1h 5m
2026-07-22 FFT1846 PHX → DTW Jul 22, 17:08 UTCJul 22, 18:06 UTC58m
2026-07-22 FFT4771 ATL → CVG Jul 22, 14:35 UTCJul 22, 15:30 UTC55m
2026-07-22 FFT1270 DFW → ATL Jul 22, 11:40 UTCJul 22, 13:20 UTC1h 40m
2026-07-22 FFT4559 IAD → DFW Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-21 FFT3208 DFW → IAD Jul 21, 22:50 UTCJul 22, 01:40 UTC2h 50m
2026-07-21 FFT2343 RDU → ATL Jul 21, 18:05 UTCJul 21, 20:35 UTC2h 30m
2026-07-21 FFT3330 DFW → RDU Jul 21, 14:00 UTCJul 21, 16:30 UTC2h 30m
2026-07-20 FFT3223 MSP → DFW Jul 20, 22:40 UTCJul 21, 00:35 UTC1h 55m
2026-07-20 FFT3224 DFW → MSP Jul 20, 18:56 UTCJul 20, 21:20 UTC2h 24m
2026-07-20 FFT3224 DFW → MSP Jul 20, 19:00 UTCJul 20, 21:20 UTC2h 20m
2026-07-20 FFT3021 ATL → DFW Jul 20, 15:15 UTCJul 20, 16:55 UTC1h 40m
2026-07-20 FFT1270 DFW → ATL Jul 20, 11:34 UTCJul 20, 13:05 UTC1h 31m
2026-07-20 FFT1270 DFW → ATL Jul 20, 11:25 UTCJul 20, 13:05 UTC1h 40m
2026-07-20 FFT1757 CVG → TPA Jul 20, 01:00 UTCJul 20, 02:50 UTC1h 50m
2026-07-19 FFT4280 - Jul 19, 21:45 UTCJul 19, 23:35 UTC1h 50m
2026-07-19 FFT2219 - Jul 19, 17:35 UTCJul 19, 20:10 UTC2h 35m
2026-07-19 FFT2219 - Jul 19, 15:40 UTCJul 19, 15:55 UTC15m
2026-07-19 FFT3378 - Jul 19, 04:20 UTCJul 19, 04:30 UTC10m
2026-07-19 FFT3378 - Jul 19, 02:20 UTCJul 19, 02:45 UTC25m
2026-07-18 FFT2272 ATL → MIA Jul 18, 23:35 UTCJul 19, 01:05 UTC1h 30m
2026-07-18 FFT3059 - Jul 18, 20:15 UTCJul 18, 21:40 UTC1h 25m
2026-07-18 FFT2676 DFW → MIA Jul 18, 15:45 UTCJul 18, 18:40 UTC2h 55m
2026-07-18 FFT2135 - Jul 18, 11:00 UTCJul 18, 13:30 UTC2h 30m

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 N438FR page for operator, model, and routing details .

Mode-S A54163 frequently asked

What is Mode-S code A54163?
A54163 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N438FR.
Where is Mode-S A54163 registered?
Mode-S code A54163 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 A54163 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A54163, octal 51240543, decimal 10,830,179.
What flights does A54163 operate?
Mode-S A54163 has broadcast 20 distinct callsigns, including FFT3092, FFT3091, FFT2338, FFT4117, FFT2715.