Apparatus

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sensors Mode-S transponder

A40312

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N358FR · AIRBUS A-320neo · operated by UMB BANK NA TRUSTEE

Hex
A40312
Octal
51001422
Decimal
10,748,690
Country
US
Tail
N358FR
Type
A20N
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
473
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A40312.

Country allocation

The ICAO 24-bit address A40312 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
FFT2250 Frontier Airlines 7 2026-06-16
FFT1203 Frontier Airlines 7 2026-07-22
FFT1165 Frontier Airlines 7 2026-06-16
FFT3439 - 6 2026-07-11
FFT2146 Frontier Airlines 6 2026-04-20
FFT1230 - 6 2026-07-11
FFT90 Frontier Airlines 5 2026-07-22
FFT687 - 5 2026-07-08
FFT3375 Frontier Airlines 5 2026-06-06
FFT2550 - 5 2026-06-26
FFT2297 Frontier Airlines 5 2026-07-26
FFT1204 Frontier Airlines 5 2026-07-23
FFT1157 - 5 2026-07-18
FFT686 - 4 2026-07-08
FFT3566 Frontier Airlines 4 2026-06-02
FFT3376 Frontier Airlines 4 2026-06-06
FFT2407 Frontier Airlines 4 2026-04-24
FFT2292 - 4 2026-07-17
FFT2147 - 4 2026-07-08
FFT2145 Frontier Airlines 4 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FFT2297 PHL → FLL Jul 26, 19:50 UTCJul 26, 21:15 UTC1h 25m
2026-07-23 FFT1204 MCO → BDL Jul 23, 02:30 UTCJul 23, 04:50 UTC2h 20m
2026-07-22 FFT1203 PHL → MIA Jul 22, 22:30 UTCJul 23, 01:00 UTC2h 30m
2026-07-22 FFT90 CUN → PHL Jul 22, 15:35 UTCJul 22, 18:40 UTC3h 5m
2026-07-22 FFT90 CUN → PHL Jul 22, 15:38 UTCJul 22, 18:39 UTC3h 1m
2026-07-22 FFT91 PHL → CUN Jul 22, 11:10 UTCJul 22, 13:55 UTC2h 45m
2026-07-21 FFT2506 MCO → PHL Jul 21, 05:55 UTCJul 21, 07:55 UTC2h 0m
2026-07-21 FFT2507 PHL → MCO Jul 21, 02:05 UTCJul 21, 03:55 UTC1h 50m
2026-07-20 FFT7080 ORD → PUJ Jul 20, 13:40 UTCJul 21, 00:05 UTC10h 24m
2026-07-20 FFT9577 ATL → PHL Jul 20, 10:15 UTCJul 20, 11:50 UTC1h 35m
2026-07-20 FFT4537 BWI → ATL Jul 20, 03:25 UTCJul 20, 04:50 UTC1h 25m
2026-07-19 FFT3068 - Jul 19, 22:30 UTCJul 20, 01:55 UTC3h 25m
2026-07-19 FFT3067 - Jul 19, 14:10 UTCJul 19, 16:45 UTC2h 35m
2026-07-19 FFT2634 FLL → SWF Jul 19, 08:05 UTCJul 19, 08:50 UTC45m
2026-07-18 FFT2634 FLL → SWF Jul 18, 19:10 UTCJul 18, 21:10 UTC2h 0m
2026-07-18 FFT2297 PHL → FLL Jul 18, 15:45 UTCJul 18, 17:15 UTC1h 30m
2026-07-18 FFT2297 PHL → FLL Jul 18, 15:41 UTCJul 18, 17:13 UTC1h 32m
2026-07-18 FFT2297 PHL → FLL Jul 18, 15:25 UTCJul 18, 15:40 UTC15m
2026-07-18 FFT1004 - Jul 18, 12:10 UTCJul 18, 13:50 UTC1h 40m
2026-07-18 FFT1157 EWR → ATL Jul 18, 04:30 UTCJul 18, 06:10 UTC1h 40m
2026-07-18 FFT1157 EWR → ATL Jul 18, 04:07 UTCJul 18, 06:07 UTC2h 0m
2026-07-18 FFT1158 ATL → EWR Jul 18, 01:15 UTCJul 18, 03:10 UTC1h 56m
2026-07-17 FFT125 ATL → ATL Jul 17, 15:05 UTCJul 17, 21:50 UTC6h 45m
2026-07-17 FFT2292 MDW → ATL Jul 17, 11:17 UTCJul 17, 12:44 UTC1h 27m
2026-07-17 FFT2292 - Jul 17, 11:15 UTCJul 17, 12:50 UTC1h 35m
2026-07-17 FFT2291 ATL → MDW Jul 17, 01:29 UTCJul 17, 02:54 UTC1h 25m
2026-07-16 FFT1157 - Jul 16, 18:50 UTCJul 16, 20:39 UTC1h 50m
2026-07-16 FFT1158 ATL → EWR Jul 16, 15:45 UTCJul 16, 17:35 UTC1h 50m
2026-07-15 FFT3059 - Jul 15, 16:15 UTCJul 15, 17:30 UTC1h 15m
2026-07-15 FFT3377 - Jul 15, 12:35 UTCJul 15, 14:55 UTC2h 20m
2026-07-15 FFT2220 - Jul 15, 10:10 UTCJul 15, 10:25 UTC15m
2026-07-15 FFT2220 - Jul 15, 06:05 UTCJul 15, 08:40 UTC2h 35m
2026-07-15 FFT2532 PHX → DFW Jul 15, 01:05 UTCJul 15, 03:05 UTC2h 0m
2026-07-14 FFT3871 SLC → PHX Jul 14, 18:45 UTCJul 14, 20:00 UTC1h 15m
2026-07-14 FFT3872 - Jul 14, 16:25 UTCJul 14, 17:45 UTC1h 20m
2026-07-14 FFT4753 DEN → PHX Jul 14, 07:55 UTCJul 14, 09:15 UTC1h 20m
2026-07-14 FFT1820 - Jul 14, 04:25 UTCJul 14, 05:50 UTC1h 25m
2026-07-14 FFT1820 PHX → DEN Jul 14, 04:39 UTCJul 14, 05:48 UTC1h 9m
2026-07-14 FFT1820 - Jul 14, 00:15 UTCJul 14, 01:10 UTC55m
2026-07-13 FFT1571 PHX → SAN Jul 13, 22:15 UTCJul 13, 23:05 UTC50m
2026-07-13 FFT3871 SLC → PHX Jul 13, 18:50 UTCJul 13, 20:05 UTC1h 15m
2026-07-13 FFT3871 SLC → PHX Jul 13, 18:53 UTCJul 13, 20:04 UTC1h 11m
2026-07-13 FFT3872 - Jul 13, 16:30 UTCJul 13, 17:40 UTC1h 10m
2026-07-12 FFT1819 DEN → PHX Jul 12, 00:01 UTCJul 12, 01:20 UTC1h 20m
2026-07-11 FFT1091 IND → MCO Jul 11, 19:25 UTCJul 11, 21:00 UTC1h 35m
2026-07-11 FFT4344 DEN → XNA Jul 11, 17:00 UTCJul 11, 18:20 UTC1h 20m
2026-07-11 FFT1230 - Jul 11, 13:10 UTCJul 11, 15:15 UTC2h 5m
2026-07-11 FFT3439 DEN → SFO Jul 11, 05:25 UTCJul 11, 07:35 UTC2h 10m
2026-07-11 FFT4625 - Jul 11, 01:00 UTCJul 11, 03:50 UTC2h 50m
2026-07-11 FFT4625 MEM → DEN Jul 11, 01:01 UTCJul 11, 03:50 UTC2h 49m

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 N358FR page for operator, model, and routing details .

Mode-S A40312 frequently asked

What is Mode-S code A40312?
A40312 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N358FR.
Where is Mode-S A40312 registered?
Mode-S code A40312 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 A40312 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 A40312, octal 51001422, decimal 10,748,690.
What flights does A40312 operate?
Mode-S A40312 has broadcast 20 distinct callsigns, including FFT2250, FFT1203, FFT1165, FFT3439, FFT2146.