Apparatus

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sensors Mode-S transponder

39B495

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HNEV · AIRBUS HELICOPTERS EC-135/635

Hex
39B495
Octal
16332225
Decimal
3,781,781
Country
FR
Tail
F-HNEV
Type
EC35
No current signal · last broadcast 10h ago
Flights observed
84
Distinct callsigns
4
Country
FR
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 39B495.

Country allocation

The ICAO 24-bit address 39B495 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 4 distinct

Callsign Airline Flights Last seen
SAMU58 - 34 2026-05-27
SAMU89 - 28 2026-07-20
SAMU21 - 19 2026-06-08
FHNEV - 3 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 SAMU89 - Jul 20, 11:40 UTCJul 20, 12:10 UTC30m
2026-07-19 SAMU89 - Jul 19, 17:45 UTCJul 19, 18:50 UTC1h 5m
2026-07-17 SAMU89 - Jul 17, 11:50 UTCJul 17, 12:19 UTC30m
2026-07-16 SAMU89 - Jul 16, 11:40 UTCJul 16, 12:05 UTC25m
2026-07-14 SAMU89 - Jul 14, 17:30 UTCJul 14, 18:00 UTC30m
2026-07-13 SAMU89 - Jul 13, 11:40 UTCJul 13, 11:45 UTC5m
2026-07-12 SAMU89 - Jul 12, 13:20 UTCJul 12, 13:50 UTC30m
2026-07-11 SAMU89 - Jul 11, 17:50 UTCJul 11, 18:20 UTC30m
2026-07-11 SAMU89 - Jul 11, 17:05 UTCJul 11, 17:15 UTC10m
2026-07-10 SAMU89 - Jul 10, 10:00 UTCJul 10, 10:25 UTC25m
2026-07-09 SAMU89 - Jul 9, 11:00 UTCJul 9, 11:40 UTC40m
2026-07-09 SAMU89 - Jul 9, 09:45 UTCJul 9, 10:15 UTC30m
2026-07-03 SAMU89 - Jul 3, 17:05 UTCJul 3, 17:35 UTC30m
2026-07-03 SAMU89 - Jul 3, 12:45 UTCJul 3, 13:20 UTC35m
2026-07-02 SAMU89 - Jul 2, 16:00 UTCJul 2, 16:15 UTC15m
2026-07-02 SAMU89 - Jul 2, 13:55 UTCJul 2, 14:10 UTC15m
2026-06-30 SAMU89 - Jun 30, 17:20 UTCJun 30, 17:35 UTC15m
2026-06-30 SAMU89 - Jun 30, 14:55 UTCJun 30, 15:25 UTC30m
2026-06-30 SAMU89 - Jun 30, 10:25 UTCJun 30, 11:00 UTC35m
2026-06-23 SAMU89 - Jun 23, 12:15 UTCJun 23, 12:49 UTC35m
2026-06-17 SAMU89 - Jun 17, 17:55 UTCJun 17, 18:05 UTC10m
2026-06-17 SAMU89 - Jun 17, 11:20 UTCJun 17, 11:35 UTC15m
2026-06-17 SAMU89 - Jun 17, 09:50 UTCJun 17, 10:50 UTC1h 0m
2026-06-16 SAMU89 - Jun 16, 17:10 UTCJun 16, 17:35 UTC25m
2026-06-15 SAMU89 - Jun 15, 18:04 UTCJun 15, 18:29 UTC25m
2026-06-15 SAMU89 - Jun 15, 16:40 UTCJun 15, 16:55 UTC15m
2026-06-12 SAMU89 - Jun 12, 18:45 UTCJun 12, 19:15 UTC30m
2026-06-11 SAMU89 - Jun 11, 16:35 UTCJun 11, 17:10 UTC35m
2026-06-08 SAMU21 - Jun 8, 16:20 UTCJun 8, 16:45 UTC25m
2026-06-08 SAMU21 - Jun 8, 15:20 UTCJun 8, 15:45 UTC25m
2026-06-08 SAMU21 - Jun 8, 03:10 UTCJun 8, 03:20 UTC10m
2026-06-07 SAMU21 - Jun 7, 23:40 UTCJun 8, 00:10 UTC30m
2026-06-06 SAMU21 - Jun 6, 00:45 UTCJun 6, 00:55 UTC10m
2026-06-05 SAMU21 - Jun 5, 23:00 UTCJun 5, 23:10 UTC10m
2026-06-03 SAMU21 - Jun 3, 19:45 UTCJun 3, 19:55 UTC10m
2026-06-03 SAMU21 - Jun 3, 17:45 UTCJun 3, 19:10 UTC1h 25m
2026-06-02 SAMU21 - Jun 2, 19:10 UTCJun 2, 19:50 UTC40m
2026-06-02 SAMU21 - Jun 2, 07:10 UTCJun 2, 07:25 UTC15m
2026-06-01 SAMU21 - Jun 1, 13:00 UTCJun 1, 13:10 UTC10m
2026-06-01 SAMU21 - Jun 1, 09:00 UTCJun 1, 10:50 UTC1h 50m
2026-05-30 SAMU21 - May 30, 23:50 UTCMay 31, 00:10 UTC20m
2026-05-30 SAMU21 - May 30, 22:20 UTCMay 30, 22:40 UTC20m
2026-05-30 SAMU21 - May 30, 21:45 UTCMay 30, 22:00 UTC15m
2026-05-30 SAMU21 - May 30, 11:10 UTCMay 30, 11:20 UTC10m
2026-05-29 SAMU21 - May 29, 16:00 UTCMay 29, 16:35 UTC35m
2026-05-29 SAMU21 - May 29, 06:45 UTCMay 29, 07:25 UTC40m
2026-05-28 SAMU21 - May 28, 19:25 UTCMay 28, 19:30 UTC5m
2026-05-28 FHNEV - May 28, 10:25 UTCMay 28, 10:40 UTC15m
2026-05-28 FHNEV - May 28, 07:50 UTCMay 28, 08:40 UTC50m
2026-05-28 FHNEV - May 28, 06:25 UTCMay 28, 06:40 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 F-HNEV page for operator, model, and routing details .

Mode-S 39B495 frequently asked

What is Mode-S code 39B495?
39B495 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HNEV.
Where is Mode-S 39B495 registered?
Mode-S code 39B495 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39B495 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39B495, octal 16332225, decimal 3,781,781.
What flights does 39B495 operate?
Mode-S 39B495 has broadcast 4 distinct callsigns, including SAMU58, SAMU89, SAMU21, FHNEV.