Apparatus

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sensors Mode-S transponder

39D402

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HVAC · DIAMOND DA-20

Hex
39D402
Octal
16352002
Decimal
3,789,826
Country
FR
Tail
F-HVAC
Type
DV20
No current signal · last broadcast 55m ago
Flights observed
81
Distinct callsigns
1
Country
FR
Last broadcast
55m ago

Last known position

Most recent position reported by Mode-S 39D402.

Country allocation

The ICAO 24-bit address 39D402 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
FHVAC - 81 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 FHVAC - Jul 18, 13:40 UTCJul 18, 14:15 UTC35m
2026-07-18 FHVAC - Jul 18, 11:30 UTCJul 18, 12:15 UTC45m
2026-07-18 FHVAC - Jul 18, 09:45 UTCJul 18, 10:15 UTC30m
2026-07-11 FHVAC - Jul 11, 12:00 UTCJul 11, 12:45 UTC45m
2026-07-05 FHVAC - Jul 5, 11:40 UTCJul 5, 12:05 UTC25m
2026-07-05 FHVAC - Jul 5, 09:10 UTCJul 5, 09:25 UTC15m
2026-07-04 FHVAC - Jul 4, 13:05 UTCJul 4, 13:45 UTC40m
2026-07-04 FHVAC - Jul 4, 09:50 UTCJul 4, 11:05 UTC1h 15m
2026-07-03 FHVAC - Jul 3, 14:25 UTCJul 3, 15:10 UTC45m
2026-07-02 FHVAC - Jul 2, 12:50 UTCJul 2, 13:15 UTC25m
2026-07-01 FHVAC - Jul 1, 12:05 UTCJul 1, 12:15 UTC10m
2026-06-30 FHVAC - Jun 30, 14:10 UTCJun 30, 15:00 UTC50m
2026-06-30 FHVAC - Jun 30, 12:30 UTCJun 30, 13:00 UTC30m
2026-06-30 FHVAC - Jun 30, 08:50 UTCJun 30, 09:40 UTC50m
2026-06-29 FHVAC - Jun 29, 16:29 UTCJun 29, 17:30 UTC1h 0m
2026-06-28 FHVAC - Jun 28, 13:04 UTCJun 28, 13:45 UTC40m
2026-06-27 FHVAC - Jun 27, 09:15 UTCJun 27, 09:55 UTC40m
2026-06-26 FHVAC - Jun 26, 16:20 UTCJun 26, 17:09 UTC50m
2026-06-18 FHVAC - Jun 18, 08:10 UTCJun 18, 08:40 UTC30m
2026-06-15 FHVAC - Jun 15, 12:10 UTCJun 15, 12:49 UTC40m
2026-06-15 FHVAC - Jun 15, 09:40 UTCJun 15, 10:09 UTC30m
2026-06-14 FHVAC - Jun 14, 14:20 UTCJun 14, 15:05 UTC45m
2026-06-14 FHVAC - Jun 14, 12:55 UTCJun 14, 13:15 UTC20m
2026-06-13 FHVAC - Jun 13, 17:50 UTCJun 13, 18:25 UTC35m
2026-06-13 FHVAC - Jun 13, 15:00 UTCJun 13, 15:20 UTC20m
2026-06-13 FHVAC - Jun 13, 12:55 UTCJun 13, 13:45 UTC50m
2026-06-13 FHVAC - Jun 13, 11:30 UTCJun 13, 11:45 UTC15m
2026-06-09 FHVAC - Jun 9, 15:40 UTCJun 9, 15:50 UTC10m
2026-06-07 FHVAC - Jun 7, 14:55 UTCJun 7, 16:30 UTC1h 35m
2026-06-07 FHVAC - Jun 7, 13:35 UTCJun 7, 13:55 UTC20m
2026-06-06 FHVAC - Jun 6, 14:45 UTCJun 6, 15:59 UTC1h 15m
2026-06-06 FHVAC - Jun 6, 12:30 UTCJun 6, 13:15 UTC45m
2026-06-05 FHVAC - Jun 5, 17:40 UTCJun 5, 18:00 UTC20m
2026-06-05 FHVAC - Jun 5, 16:35 UTCJun 5, 17:00 UTC25m
2026-06-05 FHVAC - Jun 5, 14:55 UTCJun 5, 15:35 UTC40m
2026-06-04 FHVAC - Jun 4, 18:15 UTCJun 4, 19:35 UTC1h 20m
2026-05-31 FHVAC - May 31, 14:30 UTCMay 31, 15:00 UTC30m
2026-05-30 FHVAC - May 30, 16:05 UTCMay 30, 16:25 UTC20m
2026-05-30 FHVAC - May 30, 14:30 UTCMay 30, 14:55 UTC25m
2026-05-30 FHVAC - May 30, 13:15 UTCMay 30, 13:30 UTC15m
2026-05-29 FHVAC - May 29, 09:05 UTCMay 29, 09:45 UTC40m
2026-05-28 FHVAC - May 28, 10:00 UTCMay 28, 10:50 UTC50m
2026-05-26 FHVAC - May 26, 17:15 UTCMay 26, 17:59 UTC45m
2026-05-25 FHVAC - May 25, 16:25 UTCMay 25, 17:05 UTC40m
2026-05-25 FHVAC - May 25, 15:05 UTCMay 25, 15:30 UTC25m
2026-05-25 FHVAC - May 25, 13:45 UTCMay 25, 14:00 UTC15m
2026-05-24 FHVAC - May 24, 18:35 UTCMay 24, 19:00 UTC25m
2026-05-23 FHVAC - May 23, 10:50 UTCMay 23, 11:15 UTC25m
2026-05-22 FHVAC - May 22, 16:05 UTCMay 22, 17:00 UTC55m
2026-05-22 FHVAC - May 22, 10:40 UTCMay 22, 11:05 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-HVAC page for operator, model, and routing details .

Mode-S 39D402 frequently asked

What is Mode-S code 39D402?
39D402 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HVAC.
Where is Mode-S 39D402 registered?
Mode-S code 39D402 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D402 broadcasting right now?
No active broadcast right now. Last signal was 55m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D402, octal 16352002, decimal 3,789,826.
What flights does 39D402 operate?
Mode-S 39D402 has broadcast 1 distinct callsign, including FHVAC.