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sensors Mode-S transponder

3995C9

ICAO 24-bit transponder address · allocated to France

Hex
3995C9
Octal
16312711
Decimal
3,773,897
Country
FR
No current signal · last broadcast Jul 26, 15:10 UTC
Flights observed
64
Distinct callsigns
1
Country
FR
Last broadcast
Jul 26, 15:10 UTC

Last known position

Most recent position reported by Mode-S 3995C9.

Country allocation

The ICAO 24-bit address 3995C9 falls within the block assigned to France (FR) by ICAO Annex 10, Volume III. Every aircraft registered in France 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
FHFOJ - 64 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FHFOJ - Jul 26, 14:25 UTCJul 26, 15:10 UTC45m
2026-07-25 FHFOJ - Jul 25, 09:05 UTCJul 25, 09:45 UTC40m
2026-07-24 FHFOJ - Jul 24, 16:55 UTCJul 24, 17:40 UTC45m
2026-07-24 FHFOJ - Jul 24, 10:30 UTCJul 24, 10:50 UTC20m
2026-07-24 FHFOJ - Jul 24, 09:05 UTCJul 24, 09:25 UTC20m
2026-07-24 FHFOJ - Jul 24, 07:15 UTCJul 24, 07:50 UTC35m
2026-07-21 FHFOJ - Jul 21, 10:45 UTCJul 21, 11:20 UTC35m
2026-07-19 FHFOJ - Jul 19, 15:45 UTCJul 19, 16:35 UTC50m
2026-07-18 FHFOJ - Jul 18, 07:15 UTCJul 18, 08:25 UTC1h 10m
2026-06-21 FHFOJ - Jun 21, 08:44 UTCJun 21, 09:24 UTC40m
2026-06-19 FHFOJ - Jun 19, 08:59 UTCJun 19, 09:34 UTC35m
2026-06-16 FHFOJ - Jun 16, 14:05 UTCJun 16, 14:35 UTC30m
2026-06-16 FHFOJ - Jun 16, 11:49 UTCJun 16, 12:30 UTC40m
2026-06-16 FHFOJ - Jun 16, 08:55 UTCJun 16, 09:40 UTC45m
2026-06-14 FHFOJ - Jun 14, 15:05 UTCJun 14, 16:00 UTC55m
2026-06-13 FHFOJ - Jun 13, 15:00 UTCJun 13, 15:30 UTC30m
2026-06-13 FHFOJ - Jun 13, 08:40 UTCJun 13, 09:35 UTC55m
2026-06-12 FHFOJ - Jun 12, 12:40 UTCJun 12, 14:25 UTC1h 45m
2026-06-11 FHFOJ - Jun 11, 12:40 UTCJun 11, 13:05 UTC25m
2026-06-11 FHFOJ - Jun 11, 11:45 UTCJun 11, 12:00 UTC15m
2026-06-10 FHFOJ - Jun 10, 17:30 UTCJun 10, 18:10 UTC40m
2026-06-10 FHFOJ - Jun 10, 15:45 UTCJun 10, 16:25 UTC40m
2026-06-10 FHFOJ - Jun 10, 13:50 UTCJun 10, 14:20 UTC30m
2026-06-07 FHFOJ - Jun 7, 14:25 UTCJun 7, 14:40 UTC15m
2026-06-05 FHFOJ - Jun 5, 14:20 UTCJun 5, 14:55 UTC35m
2026-06-03 FHFOJ - Jun 3, 13:45 UTCJun 3, 14:10 UTC25m
2026-06-03 FHFOJ - Jun 3, 11:55 UTCJun 3, 12:30 UTC35m
2026-05-30 FHFOJ - May 30, 16:55 UTCMay 30, 17:15 UTC20m
2026-05-29 FHFOJ - May 29, 14:05 UTCMay 29, 14:55 UTC50m
2026-05-29 FHFOJ - May 29, 13:00 UTCMay 29, 13:20 UTC20m
2026-05-29 FHFOJ - May 29, 11:50 UTCMay 29, 12:25 UTC35m
2026-05-29 FHFOJ - May 29, 07:35 UTCMay 29, 08:05 UTC30m
2026-05-25 FHFOJ - May 25, 18:15 UTCMay 25, 18:50 UTC35m
2026-05-23 FHFOJ - May 23, 08:10 UTCMay 23, 11:55 UTC3h 45m
2026-05-22 FHFOJ - May 22, 14:25 UTCMay 22, 15:00 UTC35m
2026-05-22 FHFOJ - May 22, 08:35 UTCMay 22, 08:45 UTC10m
2026-05-15 FHFOJ - May 15, 12:20 UTCMay 15, 13:10 UTC50m
2026-05-15 FHFOJ - May 15, 10:05 UTCMay 15, 10:40 UTC35m
2026-05-13 FHFOJ - May 13, 13:40 UTCMay 13, 13:50 UTC10m
2026-05-13 FHFOJ - May 13, 11:05 UTCMay 13, 11:25 UTC20m
2026-05-11 FHFOJ - May 11, 18:00 UTCMay 11, 18:20 UTC20m
2026-05-11 FHFOJ - May 11, 15:20 UTCMay 11, 16:05 UTC45m
2026-05-11 FHFOJ - May 11, 13:05 UTCMay 11, 13:50 UTC45m
2026-05-09 FHFOJ - May 9, 14:15 UTCMay 9, 15:15 UTC1h 0m
2026-05-08 FHFOJ - May 8, 16:20 UTCMay 8, 17:35 UTC1h 15m
2026-05-08 FHFOJ - May 8, 09:54 UTCMay 8, 10:39 UTC45m
2026-05-04 FHFOJ - May 4, 15:00 UTCMay 4, 15:15 UTC15m
2026-05-04 FHFOJ - May 4, 13:40 UTCMay 4, 14:15 UTC35m
2026-05-04 FHFOJ - May 4, 12:10 UTCMay 4, 12:50 UTC40m
2026-05-02 FHFOJ - May 2, 13:40 UTCMay 2, 14:20 UTC40m

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.

Mode-S 3995C9 frequently asked

What is Mode-S code 3995C9?
3995C9 is an ICAO 24-bit transponder address. Allocated to France.
Where is Mode-S 3995C9 registered?
Mode-S code 3995C9 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3995C9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3995C9, octal 16312711, decimal 3,773,897.
What flights does 3995C9 operate?
Mode-S 3995C9 has broadcast 1 distinct callsign, including FHFOJ.