Apparatus

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sensors Mode-S transponder

39844C

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HBCM · ATR-72-600

Hex
39844C
Octal
16302114
Decimal
3,769,420
Country
FR
Tail
F-HBCM
Type
AT76
No current signal · last broadcast 6h ago
Flights observed
142
Distinct callsigns
10
Country
FR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 39844C.

Country allocation

The ICAO 24-bit address 39844C 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 10 distinct

Callsign Airline Flights Last seen
CLG1936 Chalair Aviation 38 2026-05-29
CLG1935 Chalair Aviation 37 2026-05-29
CLG1931 Chalair Aviation 29 2026-05-29
CLG1932 Chalair Aviation 28 2026-05-29
CLG907N Chalair Aviation 2 2026-05-17
CLG907M - 2 2026-05-15
CLG5052 Chalair Aviation 2 2026-05-16
CLG5051 - 2 2026-05-15
CLG907P Chalair Aviation 1 2026-05-08
CLG907O - 1 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CLG1936 ORY → BVE May 29, 18:00 UTCMay 29, 18:50 UTC50m
2026-05-29 CLG1935 BVE → ORY May 29, 16:05 UTCMay 29, 17:10 UTC1h 5m
2026-05-29 CLG1932 ORY → BVE May 29, 07:15 UTCMay 29, 08:05 UTC50m
2026-05-29 CLG1931 BVE → ORY May 29, 05:10 UTCMay 29, 06:05 UTC55m
2026-05-28 CLG1936 ORY → BVE May 28, 18:05 UTCMay 28, 18:55 UTC50m
2026-05-28 CLG1935 BVE → ORY May 28, 16:05 UTCMay 28, 17:00 UTC55m
2026-05-27 CLG1936 ORY → BVE May 27, 18:00 UTCMay 27, 18:55 UTC55m
2026-05-27 CLG1935 BVE → ORY May 27, 16:05 UTCMay 27, 17:00 UTC55m
2026-05-27 CLG1932 ORY → BVE May 27, 07:15 UTCMay 27, 08:05 UTC50m
2026-05-27 CLG1931 BVE → ORY May 27, 05:09 UTCMay 27, 05:59 UTC50m
2026-05-26 CLG1936 ORY → BVE May 26, 17:44 UTCMay 26, 18:40 UTC55m
2026-05-26 CLG1935 BVE → ORY May 26, 15:49 UTCMay 26, 16:55 UTC1h 5m
2026-05-26 CLG1932 ORY → BVE May 26, 06:59 UTCMay 26, 07:59 UTC1h 0m
2026-05-26 CLG1931 BVE → ORY May 26, 05:10 UTCMay 26, 06:04 UTC55m
2026-05-25 CLG1936 ORY → BVE May 25, 17:55 UTCMay 25, 18:50 UTC55m
2026-05-25 CLG1935 BVE → ORY May 25, 15:55 UTCMay 25, 16:50 UTC55m
2026-05-22 CLG1936 ORY → BVE May 22, 18:00 UTCMay 22, 18:55 UTC55m
2026-05-22 CLG1935 BVE → ORY May 22, 16:00 UTCMay 22, 16:55 UTC55m
2026-05-22 CLG1932 ORY → BVE May 22, 07:00 UTCMay 22, 07:55 UTC55m
2026-05-22 CLG1931 BVE → ORY May 22, 05:05 UTCMay 22, 06:00 UTC55m
2026-05-21 CLG1936 ORY → BVE May 21, 17:55 UTCMay 21, 18:50 UTC55m
2026-05-21 CLG1935 BVE → ORY May 21, 15:55 UTCMay 21, 16:50 UTC55m
2026-05-20 CLG1936 ORY → BVE May 20, 18:05 UTCMay 20, 18:55 UTC50m
2026-05-20 CLG1935 BVE → ORY May 20, 16:05 UTCMay 20, 17:10 UTC1h 5m
2026-05-20 CLG1932 ORY → BVE May 20, 07:15 UTCMay 20, 08:05 UTC50m
2026-05-20 CLG1931 BVE → ORY May 20, 05:15 UTCMay 20, 06:25 UTC1h 10m
2026-05-19 CLG1936 ORY → BVE May 19, 18:00 UTCMay 19, 18:50 UTC50m
2026-05-19 CLG1935 BVE → ORY May 19, 16:00 UTCMay 19, 17:10 UTC1h 10m
2026-05-19 CLG1932 ORY → BVE May 19, 07:00 UTCMay 19, 07:50 UTC50m
2026-05-19 CLG1931 BVE → ORY May 19, 05:10 UTCMay 19, 06:10 UTC1h 0m
2026-05-18 CLG1936 ORY → BVE May 18, 17:50 UTCMay 18, 18:40 UTC49m
2026-05-18 CLG1935 BVE → ORY May 18, 16:00 UTCMay 18, 17:05 UTC1h 5m
2026-05-18 CLG1932 ORY → BVE May 18, 07:05 UTCMay 18, 08:01 UTC55m
2026-05-18 CLG1931 BVE → ORY May 18, 05:05 UTCMay 18, 06:20 UTC1h 15m
2026-05-17 CLG1936 ORY → BVE May 17, 18:05 UTCMay 17, 18:55 UTC50m
2026-05-17 CLG1935 BVE → ORY May 17, 16:05 UTCMay 17, 17:10 UTC1h 5m
2026-05-17 CLG907N EBU → LIG May 17, 11:25 UTCMay 17, 12:05 UTC40m
2026-05-16 CLG5052 CWL → VNE May 16, 18:25 UTCMay 16, 19:45 UTC1h 20m
2026-05-15 CLG5051 - May 15, 13:00 UTCMay 15, 14:25 UTC1h 25m
2026-05-15 CLG907M - May 15, 11:30 UTCMay 15, 12:05 UTC35m
2026-05-14 CLG1932 ORY → BVE May 14, 07:15 UTCMay 14, 08:05 UTC50m
2026-05-14 CLG1931 BVE → ORY May 14, 05:05 UTCMay 14, 06:10 UTC1h 5m
2026-05-13 CLG1936 ORY → BVE May 13, 18:30 UTCMay 13, 19:25 UTC55m
2026-05-13 CLG1935 BVE → ORY May 13, 16:10 UTCMay 13, 17:20 UTC1h 10m
2026-05-13 CLG1932 ORY → BVE May 13, 07:05 UTCMay 13, 08:00 UTC55m
2026-05-13 CLG1931 BVE → ORY May 13, 05:05 UTCMay 13, 06:15 UTC1h 10m
2026-05-12 CLG1936 ORY → BVE May 12, 17:50 UTCMay 12, 18:45 UTC55m
2026-05-12 CLG1935 BVE → ORY May 12, 16:00 UTCMay 12, 17:10 UTC1h 10m
2026-05-12 CLG1932 ORY → BVE May 12, 07:15 UTCMay 12, 08:05 UTC50m
2026-05-12 CLG1931 BVE → ORY May 12, 05:05 UTCMay 12, 06:20 UTC1h 15m

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-HBCM page for operator, model, and routing details .

Mode-S 39844C frequently asked

What is Mode-S code 39844C?
39844C is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HBCM.
Where is Mode-S 39844C registered?
Mode-S code 39844C is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39844C broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39844C, octal 16302114, decimal 3,769,420.
What flights does 39844C operate?
Mode-S 39844C has broadcast 10 distinct callsigns, including CLG1936, CLG1935, CLG1931, CLG1932, CLG907N.