Apparatus

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sensors Mode-S transponder

39A071

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HIDR · ROBIN DR-400

Hex
39A071
Octal
16320161
Decimal
3,776,625
Country
FR
Tail
F-HIDR
Type
DR40
No current signal · last broadcast 2d ago
Flights observed
43
Distinct callsigns
1
Country
FR
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 39A071.

Country allocation

The ICAO 24-bit address 39A071 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
FHIDR - 42 2026-07-25

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-07-25 FHIDR - Jul 25, 08:40 UTCJul 25, 09:30 UTC50m
2026-07-24 FHIDR - Jul 24, 12:40 UTCJul 24, 12:50 UTC10m
2026-07-24 FHIDR - Jul 24, 10:05 UTCJul 24, 11:00 UTC55m
2026-07-22 FHIDR - Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-20 FHIDR - Jul 20, 09:45 UTCJul 20, 11:20 UTC1h 35m
2026-07-19 FHIDR - Jul 19, 09:30 UTCJul 19, 09:55 UTC25m
2026-07-17 FHIDR - Jul 17, 17:50 UTCJul 17, 18:19 UTC30m
2026-07-17 FHIDR - Jul 17, 14:15 UTCJul 17, 16:10 UTC1h 55m
2026-07-14 - - Jul 14, 08:40 UTCJul 14, 09:00 UTC20m
2026-07-11 FHIDR - Jul 11, 06:50 UTCJul 11, 07:00 UTC10m
2026-07-06 FHIDR LRH → LRH Jul 6, 07:05 UTCJul 6, 07:50 UTC45m
2026-07-05 FHIDR - Jul 5, 19:50 UTCJul 5, 20:15 UTC25m
2026-07-05 FHIDR LRH → LRH Jul 5, 17:00 UTCJul 5, 17:55 UTC55m
2026-07-05 FHIDR LRH → LRH Jul 5, 15:45 UTCJul 5, 16:15 UTC30m
2026-07-05 FHIDR - Jul 5, 15:05 UTCJul 5, 15:15 UTC10m
2026-07-05 FHIDR - Jul 5, 08:40 UTCJul 5, 09:15 UTC35m
2026-07-04 FHIDR - Jul 4, 07:00 UTCJul 4, 07:50 UTC50m
2026-06-26 FHIDR - Jun 26, 15:25 UTCJun 26, 15:39 UTC15m
2026-06-26 FHIDR LRH → LRH Jun 26, 12:19 UTCJun 26, 13:59 UTC1h 40m
2026-06-13 FHIDR LRH → LRH Jun 13, 19:25 UTCJun 13, 20:05 UTC40m
2026-06-13 FHIDR LRH → LRH Jun 13, 15:30 UTCJun 13, 16:45 UTC1h 15m
2026-06-13 FHIDR - Jun 13, 14:20 UTCJun 13, 14:50 UTC30m
2026-06-13 FHIDR LRH → LRH Jun 13, 12:50 UTCJun 13, 13:45 UTC55m
2026-06-13 FHIDR LRH → LRH Jun 13, 11:20 UTCJun 13, 12:00 UTC40m
2026-06-13 FHIDR LRH → LRH Jun 13, 09:05 UTCJun 13, 09:45 UTC40m
2026-06-13 FHIDR - Jun 13, 07:20 UTCJun 13, 08:10 UTC50m
2026-06-12 FHIDR - Jun 12, 14:20 UTCJun 12, 15:40 UTC1h 20m
2026-06-12 FHIDR - Jun 12, 10:05 UTCJun 12, 10:20 UTC15m
2026-06-12 FHIDR - Jun 12, 07:40 UTCJun 12, 09:30 UTC1h 50m
2026-05-27 FHIDR - May 27, 17:10 UTCMay 27, 17:45 UTC35m
2026-05-27 FHIDR LRH → LRH May 27, 09:50 UTCMay 27, 10:45 UTC55m
2026-05-27 FHIDR - May 27, 07:15 UTCMay 27, 08:50 UTC1h 35m
2026-05-26 FHIDR - May 26, 08:59 UTCMay 26, 09:15 UTC15m
2026-05-22 FHIDR - May 22, 13:55 UTCMay 22, 14:05 UTC10m
2026-05-22 FHIDR - May 22, 07:55 UTCMay 22, 08:10 UTC15m
2026-05-20 FHIDR - May 20, 19:05 UTCMay 20, 19:30 UTC25m
2026-05-16 FHIDR - May 16, 12:01 UTCMay 16, 12:21 UTC20m
2026-05-16 FHIDR - May 16, 10:20 UTCMay 16, 10:46 UTC25m
2026-04-28 FHIDR - Apr 28, 12:05 UTCApr 28, 12:40 UTC35m
2026-04-28 FHIDR - Apr 28, 09:25 UTCApr 28, 10:05 UTC40m
2026-04-26 FHIDR - Apr 26, 15:35 UTCApr 26, 16:10 UTC35m
2026-04-26 FHIDR - Apr 26, 10:10 UTCApr 26, 10:30 UTC20m
2026-04-21 FHIDR - Apr 21, 12:35 UTCApr 21, 13:01 UTC25m

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

Mode-S 39A071 frequently asked

What is Mode-S code 39A071?
39A071 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HIDR.
Where is Mode-S 39A071 registered?
Mode-S code 39A071 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39A071 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39A071, octal 16320161, decimal 3,776,625.
What flights does 39A071 operate?
Mode-S 39A071 has broadcast 1 distinct callsign, including FHIDR.