Apparatus

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sensors Mode-S transponder

39CA85

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HSUF · AIRBUS HELICOPTERS EC-145

Hex
39CA85
Octal
16345205
Decimal
3,787,397
Country
FR
Tail
F-HSUF
Type
EC45
No current signal · last broadcast 6h ago
Flights observed
318
Distinct callsigns
3
Country
FR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 39CA85.

Country allocation

The ICAO 24-bit address 39CA85 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 3 distinct

Callsign Airline Flights Last seen
SAMU28 - 275 2026-07-23
SAMU28S - 39 2026-05-04
FHSUF - 4 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 SAMU28 - Jul 23, 14:35 UTCJul 23, 14:50 UTC15m
2026-07-23 SAMU28 - Jul 23, 12:50 UTCJul 23, 13:05 UTC15m
2026-07-23 SAMU28 - Jul 23, 10:05 UTCJul 23, 10:30 UTC25m
2026-07-23 SAMU28 - Jul 23, 09:10 UTCJul 23, 09:30 UTC20m
2026-07-23 SAMU28 - Jul 23, 07:45 UTCJul 23, 08:00 UTC15m
2026-07-22 SAMU28 - Jul 22, 16:15 UTCJul 22, 16:35 UTC20m
2026-07-22 SAMU28 - Jul 22, 14:50 UTCJul 22, 15:10 UTC20m
2026-07-22 SAMU28 - Jul 22, 13:35 UTCJul 22, 13:55 UTC20m
2026-07-22 SAMU28 - Jul 22, 12:25 UTCJul 22, 12:45 UTC20m
2026-07-21 SAMU28 - Jul 21, 18:05 UTCJul 21, 18:25 UTC20m
2026-07-21 SAMU28 - Jul 21, 15:50 UTCJul 21, 16:25 UTC35m
2026-07-21 SAMU28 - Jul 21, 13:20 UTCJul 21, 15:10 UTC1h 50m
2026-07-21 SAMU28 - Jul 21, 08:00 UTCJul 21, 08:10 UTC10m
2026-07-20 SAMU28 - Jul 20, 20:40 UTCJul 20, 20:55 UTC15m
2026-07-20 SAMU28 - Jul 20, 19:40 UTCJul 20, 19:50 UTC10m
2026-07-20 SAMU28 - Jul 20, 18:55 UTCJul 20, 19:05 UTC10m
2026-07-20 SAMU28 - Jul 20, 18:00 UTCJul 20, 18:10 UTC10m
2026-07-20 SAMU28 - Jul 20, 16:20 UTCJul 20, 16:30 UTC10m
2026-07-20 SAMU28 - Jul 20, 10:20 UTCJul 20, 10:30 UTC10m
2026-07-19 SAMU28 - Jul 19, 18:10 UTCJul 19, 18:30 UTC20m
2026-07-19 SAMU28 - Jul 19, 16:15 UTCJul 19, 17:10 UTC55m
2026-07-18 SAMU28 - Jul 18, 21:50 UTCJul 18, 22:40 UTC50m
2026-07-18 SAMU28 - Jul 18, 14:40 UTCJul 18, 15:05 UTC25m
2026-07-18 SAMU28 - Jul 18, 13:20 UTCJul 18, 13:35 UTC15m
2026-07-18 SAMU28 - Jul 18, 06:35 UTCJul 18, 06:50 UTC15m
2026-07-16 SAMU28 - Jul 16, 10:45 UTCJul 16, 11:10 UTC25m
2026-07-16 SAMU28 - Jul 16, 09:25 UTCJul 16, 09:35 UTC10m
2026-07-16 SAMU28 - Jul 16, 06:05 UTCJul 16, 06:20 UTC15m
2026-07-16 SAMU28 - Jul 16, 03:25 UTCJul 16, 03:45 UTC20m
2026-07-15 SAMU28 - Jul 15, 18:30 UTCJul 15, 18:40 UTC10m
2026-07-15 SAMU28 - Jul 15, 16:15 UTCJul 15, 17:15 UTC1h 0m
2026-07-15 SAMU28 - Jul 15, 15:35 UTCJul 15, 15:55 UTC20m
2026-07-15 SAMU28 - Jul 15, 13:10 UTCJul 15, 14:50 UTC1h 40m
2026-07-15 SAMU28 - Jul 15, 11:30 UTCJul 15, 12:20 UTC50m
2026-07-13 SAMU28 - Jul 13, 18:20 UTCJul 13, 18:40 UTC20m
2026-07-13 SAMU28 - Jul 13, 16:45 UTCJul 13, 17:00 UTC15m
2026-07-13 SAMU28 - Jul 13, 15:00 UTCJul 13, 15:20 UTC20m
2026-07-13 SAMU28 - Jul 13, 12:30 UTCJul 13, 12:45 UTC15m
2026-07-13 SAMU28 - Jul 13, 10:00 UTCJul 13, 10:10 UTC10m
2026-07-13 SAMU28 - Jul 13, 09:20 UTCJul 13, 09:30 UTC10m
2026-07-13 SAMU28 - Jul 13, 08:10 UTCJul 13, 08:20 UTC10m
2026-07-13 SAMU28 - Jul 13, 06:50 UTCJul 13, 07:01 UTC10m
2026-07-12 SAMU28 - Jul 12, 14:40 UTCJul 12, 15:01 UTC20m
2026-07-12 SAMU28 - Jul 12, 13:15 UTCJul 12, 13:30 UTC15m
2026-07-11 SAMU28 - Jul 11, 19:45 UTCJul 11, 20:05 UTC20m
2026-07-11 SAMU28 - Jul 11, 18:20 UTCJul 11, 18:40 UTC20m
2026-07-11 SAMU28 - Jul 11, 15:30 UTCJul 11, 15:45 UTC15m
2026-07-11 SAMU28 - Jul 11, 14:20 UTCJul 11, 14:35 UTC15m
2026-07-11 SAMU28 - Jul 11, 11:15 UTCJul 11, 11:25 UTC10m
2026-07-11 SAMU28 - Jul 11, 09:25 UTCJul 11, 09:35 UTC10m

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

Mode-S 39CA85 frequently asked

What is Mode-S code 39CA85?
39CA85 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HSUF.
Where is Mode-S 39CA85 registered?
Mode-S code 39CA85 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CA85 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 39CA85, octal 16345205, decimal 3,787,397.
What flights does 39CA85 operate?
Mode-S 39CA85 has broadcast 3 distinct callsigns, including SAMU28, SAMU28S, FHSUF.