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sensors Mode-S transponder

A2431F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N245FR · CESSNA 172 Skyhawk · operated by CHUPITO SABROCITO LLC

Hex
A2431F
Octal
50441437
Decimal
10,634,015
Country
US
Tail
N245FR
Type
C172
No current signal · last broadcast 11h ago
Flights observed
140
Distinct callsigns
1
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A2431F.

Country allocation

The ICAO 24-bit address A2431F 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 1 distinct

Callsign Airline Flights Last seen
N245FR - 140 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N245FR - Jul 17, 18:50 UTCJul 17, 19:45 UTC55m
2026-07-17 N245FR - Jul 17, 16:44 UTCJul 17, 17:09 UTC25m
2026-07-17 N245FR - Jul 17, 04:10 UTCJul 17, 06:00 UTC1h 50m
2026-07-16 N245FR - Jul 16, 17:14 UTCJul 16, 17:40 UTC25m
2026-07-15 N245FR - Jul 15, 16:50 UTCJul 15, 18:45 UTC1h 55m
2026-07-13 N245FR - Jul 13, 22:05 UTCJul 13, 22:15 UTC10m
2026-07-13 N245FR - Jul 13, 20:20 UTCJul 13, 20:40 UTC20m
2026-07-13 N245FR - Jul 13, 17:35 UTCJul 13, 18:50 UTC1h 15m
2026-07-13 N245FR - Jul 13, 15:05 UTCJul 13, 15:40 UTC35m
2026-07-12 N245FR - Jul 12, 17:01 UTCJul 12, 17:25 UTC25m
2026-07-11 N245FR - Jul 11, 04:35 UTCJul 11, 05:25 UTC50m
2026-07-11 N245FR - Jul 11, 03:40 UTCJul 11, 04:30 UTC50m
2026-07-10 N245FR - Jul 10, 22:00 UTCJul 10, 22:20 UTC20m
2026-07-10 N245FR - Jul 10, 16:15 UTCJul 10, 16:30 UTC15m
2026-07-09 N245FR - Jul 9, 18:50 UTCJul 9, 19:20 UTC30m
2026-07-09 N245FR - Jul 9, 01:40 UTCJul 9, 03:00 UTC1h 20m
2026-07-08 N245FR - Jul 8, 17:55 UTCJul 8, 18:35 UTC40m
2026-07-07 N245FR - Jul 7, 21:10 UTCJul 7, 22:10 UTC1h 0m
2026-07-06 N245FR - Jul 6, 16:40 UTCJul 6, 18:55 UTC2h 15m
2026-07-05 N245FR - Jul 5, 22:50 UTCJul 5, 23:15 UTC25m
2026-07-04 N245FR - Jul 4, 18:20 UTCJul 4, 19:05 UTC45m
2026-07-04 N245FR - Jul 4, 01:45 UTCJul 4, 03:00 UTC1h 15m
2026-07-03 N245FR - Jul 3, 18:55 UTCJul 3, 20:55 UTC2h 0m
2026-07-02 N245FR - Jul 2, 21:20 UTCJul 2, 22:25 UTC1h 5m
2026-07-02 N245FR - Jul 2, 17:30 UTCJul 2, 18:10 UTC40m
2026-07-01 N245FR - Jul 1, 01:25 UTCJul 1, 02:10 UTC45m
2026-06-30 N245FR - Jun 30, 17:45 UTCJun 30, 18:45 UTC1h 0m
2026-06-30 N245FR - Jun 30, 16:45 UTCJun 30, 17:35 UTC50m
2026-06-29 N245FR - Jun 29, 05:34 UTCJun 29, 06:24 UTC50m
2026-06-29 N245FR - Jun 29, 05:20 UTCJun 29, 05:30 UTC10m
2026-06-29 N245FR BFL → BFL Jun 29, 04:55 UTCJun 29, 05:15 UTC20m
2026-06-29 N245FR BFL → BFL Jun 29, 04:34 UTCJun 29, 04:50 UTC15m
2026-06-29 N245FR - Jun 29, 03:44 UTCJun 29, 04:30 UTC45m
2026-06-28 N245FR - Jun 28, 20:59 UTCJun 28, 22:04 UTC1h 5m
2026-06-27 N245FR - Jun 27, 20:09 UTCJun 27, 20:59 UTC50m
2026-06-27 N245FR - Jun 27, 19:15 UTCJun 27, 19:59 UTC45m
2026-06-27 N245FR - Jun 27, 02:04 UTCJun 27, 02:45 UTC40m
2026-06-23 N245FR - Jun 23, 20:34 UTCJun 23, 21:39 UTC1h 5m
2026-06-23 N245FR - Jun 23, 17:59 UTCJun 23, 18:25 UTC25m
2026-06-22 N245FR - Jun 22, 23:20 UTCJun 23, 00:00 UTC40m
2026-06-20 N245FR - Jun 20, 18:04 UTCJun 20, 18:19 UTC15m
2026-06-19 N245FR - Jun 19, 20:49 UTCJun 19, 21:34 UTC45m
2026-06-19 N245FR - Jun 19, 18:34 UTCJun 19, 19:09 UTC35m
2026-06-18 N245FR PRB → PRB Jun 18, 16:25 UTCJun 18, 16:50 UTC25m
2026-06-17 N245FR - Jun 17, 18:50 UTCJun 17, 19:00 UTC10m
2026-06-15 N245FR - Jun 15, 16:35 UTCJun 15, 17:34 UTC1h 0m
2026-06-13 N245FR - Jun 13, 21:20 UTCJun 13, 23:45 UTC2h 25m
2026-06-12 N245FR - Jun 12, 15:20 UTCJun 12, 15:30 UTC10m
2026-06-12 N245FR - Jun 12, 14:05 UTCJun 12, 14:25 UTC20m
2026-06-11 N245FR - Jun 11, 23:50 UTCJun 12, 00:40 UTC51m

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 N245FR page for operator, model, and routing details .

Mode-S A2431F frequently asked

What is Mode-S code A2431F?
A2431F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N245FR.
Where is Mode-S A2431F registered?
Mode-S code A2431F 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 A2431F broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2431F, octal 50441437, decimal 10,634,015.
What flights does A2431F operate?
Mode-S A2431F has broadcast 1 distinct callsign, including N245FR.