Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

39AC44

ICAO 24-bit transponder address · allocated to France

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

Hex
39AC44
Octal
16326104
Decimal
3,779,652
Country
FR
Tail
F-HLCE
Type
EC35
No current signal · last broadcast 16h ago
Flights observed
53
Distinct callsigns
4
Country
FR
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 39AC44.

Country allocation

The ICAO 24-bit address 39AC44 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
SAMU34 - 15 2026-06-14
SAMU12 - 11 2026-05-21
S0MU31 - 4 2026-05-26
FHLCE - 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-26 - - Jun 26, 11:45 UTCJun 26, 11:55 UTC10m
2026-06-26 - - Jun 26, 09:59 UTCJun 26, 10:50 UTC50m
2026-06-26 - - Jun 26, 08:45 UTCJun 26, 09:20 UTC35m
2026-06-26 - - Jun 26, 07:55 UTCJun 26, 08:10 UTC15m
2026-06-24 - - Jun 24, 11:50 UTCJun 24, 13:05 UTC1h 15m
2026-06-24 - - Jun 24, 01:55 UTCJun 24, 02:09 UTC15m
2026-06-24 - - Jun 24, 01:04 UTCJun 24, 01:24 UTC20m
2026-06-22 - - Jun 22, 22:54 UTCJun 22, 23:35 UTC40m
2026-06-22 - - Jun 22, 22:15 UTCJun 22, 22:24 UTC10m
2026-06-22 - - Jun 22, 20:44 UTCJun 22, 20:55 UTC10m
2026-06-21 - - Jun 21, 21:29 UTCJun 21, 22:00 UTC30m
2026-06-21 - - Jun 21, 20:09 UTCJun 21, 20:45 UTC35m
2026-06-20 - - Jun 20, 21:55 UTCJun 20, 22:10 UTC15m
2026-06-18 - - Jun 18, 11:55 UTCJun 18, 12:35 UTC40m
2026-06-18 - - Jun 18, 07:35 UTCJun 18, 08:30 UTC55m
2026-06-17 - - Jun 17, 18:35 UTCJun 17, 18:45 UTC10m
2026-06-17 - - Jun 17, 17:40 UTCJun 17, 17:55 UTC15m
2026-06-16 - - Jun 16, 01:19 UTCJun 16, 01:40 UTC20m
2026-06-16 - - Jun 16, 00:20 UTCJun 16, 00:45 UTC25m
2026-06-14 - - Jun 14, 22:45 UTCJun 14, 23:44 UTC59m
2026-06-14 SAMU34 - Jun 14, 16:15 UTCJun 14, 16:25 UTC10m
2026-06-11 SAMU34 - Jun 11, 13:00 UTCJun 11, 13:30 UTC30m
2026-06-11 SAMU34 - Jun 11, 12:00 UTCJun 11, 12:25 UTC25m
2026-06-09 SAMU34 - Jun 9, 20:35 UTCJun 9, 20:45 UTC10m
2026-06-09 SAMU34 - Jun 9, 19:20 UTCJun 9, 19:45 UTC25m
2026-06-08 SAMU34 - Jun 8, 21:35 UTCJun 8, 21:45 UTC10m
2026-06-08 SAMU34 - Jun 8, 17:05 UTCJun 8, 17:20 UTC15m
2026-06-08 SAMU34 - Jun 8, 15:50 UTCJun 8, 16:10 UTC20m
2026-06-08 SAMU34 - Jun 8, 11:35 UTCJun 8, 12:15 UTC40m
2026-06-07 SAMU34 - Jun 7, 22:50 UTCJun 7, 23:30 UTC40m
2026-06-06 SAMU34 - Jun 6, 11:19 UTCJun 6, 11:30 UTC10m
2026-06-03 SAMU34 - Jun 3, 23:35 UTCJun 3, 23:50 UTC15m
2026-06-03 SAMU34 - Jun 3, 22:50 UTCJun 3, 23:05 UTC15m
2026-06-02 SAMU34 - Jun 2, 11:45 UTCJun 2, 12:15 UTC30m
2026-06-02 SAMU34 - Jun 2, 10:15 UTCJun 2, 10:35 UTC20m
2026-05-29 FHLCE - May 29, 14:20 UTCMay 29, 14:30 UTC10m
2026-05-28 FHLCE - May 28, 13:20 UTCMay 28, 14:20 UTC1h 0m
2026-05-26 FHLCE - May 26, 16:45 UTCMay 26, 17:15 UTC30m
2026-05-26 S0MU31 - May 26, 15:49 UTCMay 26, 16:00 UTC10m
2026-05-25 S0MU31 - May 25, 16:55 UTCMay 25, 17:30 UTC35m
2026-05-22 S0MU31 - May 22, 08:05 UTCMay 22, 08:15 UTC10m
2026-05-22 S0MU31 - May 22, 07:05 UTCMay 22, 07:20 UTC15m
2026-05-21 SAMU12 - May 21, 15:20 UTCMay 21, 15:30 UTC10m
2026-05-21 SAMU12 - May 21, 13:01 UTCMay 21, 13:15 UTC15m
2026-05-20 SAMU12 - May 20, 15:10 UTCMay 20, 15:40 UTC30m
2026-05-18 SAMU12 - May 18, 18:05 UTCMay 18, 18:35 UTC29m
2026-05-13 SAMU12 - May 13, 08:10 UTCMay 13, 09:15 UTC1h 5m
2026-05-13 SAMU12 - May 13, 06:50 UTCMay 13, 07:10 UTC20m
2026-05-12 SAMU12 - May 12, 17:05 UTCMay 12, 17:20 UTC15m
2026-05-12 SAMU12 - May 12, 16:15 UTCMay 12, 16:30 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-HLCE page for operator, model, and routing details .

Mode-S 39AC44 frequently asked

What is Mode-S code 39AC44?
39AC44 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HLCE.
Where is Mode-S 39AC44 registered?
Mode-S code 39AC44 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39AC44 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39AC44, octal 16326104, decimal 3,779,652.
What flights does 39AC44 operate?
Mode-S 39AC44 has broadcast 4 distinct callsigns, including SAMU34, SAMU12, S0MU31, FHLCE.