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sensors Mode-S transponder

39942E

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HFBO · ROBIN DR-400

Hex
39942E
Octal
16312056
Decimal
3,773,486
Country
FR
Tail
F-HFBO
Type
DR40
No current signal · last broadcast Jul 26, 14:35 UTC
Flights observed
170
Distinct callsigns
1
Country
FR
Last broadcast
Jul 26, 14:35 UTC

Last known position

Most recent position reported by Mode-S 39942E.

Country allocation

The ICAO 24-bit address 39942E 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
FHFBO - 170 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FHFBO VHY → EBU Jul 26, 13:50 UTCJul 26, 14:35 UTC45m
2026-07-26 FHFBO - Jul 26, 10:55 UTCJul 26, 11:30 UTC35m
2026-07-26 FHFBO - Jul 26, 09:40 UTCJul 26, 10:00 UTC20m
2026-07-25 FHFBO - Jul 25, 13:35 UTCJul 25, 14:35 UTC1h 0m
2026-07-24 FHFBO EBU → EBU Jul 24, 18:55 UTCJul 24, 19:35 UTC40m
2026-07-24 FHFBO - Jul 24, 13:10 UTCJul 24, 13:35 UTC25m
2026-07-24 FHFBO - Jul 24, 10:45 UTCJul 24, 11:35 UTC50m
2026-07-24 FHFBO - Jul 24, 08:00 UTCJul 24, 08:20 UTC20m
2026-07-23 FHFBO EBU → EBU Jul 23, 17:20 UTCJul 23, 19:15 UTC1h 55m
2026-07-23 FHFBO - Jul 23, 12:25 UTCJul 23, 13:05 UTC40m
2026-07-23 FHFBO - Jul 23, 10:15 UTCJul 23, 10:35 UTC20m
2026-07-22 FHFBO - Jul 22, 16:40 UTCJul 22, 18:35 UTC1h 55m
2026-07-22 FHFBO - Jul 22, 14:45 UTCJul 22, 15:20 UTC35m
2026-07-21 FHFBO EBU → EBU Jul 21, 19:05 UTCJul 21, 20:05 UTC1h 0m
2026-07-21 FHFBO - Jul 21, 15:20 UTCJul 21, 15:40 UTC20m
2026-07-20 FHFBO - Jul 20, 17:45 UTCJul 20, 18:50 UTC1h 5m
2026-07-20 FHFBO - Jul 20, 14:30 UTCJul 20, 14:50 UTC20m
2026-07-20 FHFBO - Jul 20, 11:15 UTCJul 20, 11:45 UTC30m
2026-07-20 FHFBO - Jul 20, 10:30 UTCJul 20, 11:10 UTC40m
2026-07-20 FHFBO - Jul 20, 07:35 UTCJul 20, 09:00 UTC1h 25m
2026-07-19 FHFBO - Jul 19, 18:50 UTCJul 19, 19:40 UTC50m
2026-07-19 FHFBO EBU → EBU Jul 19, 16:50 UTCJul 19, 17:30 UTC40m
2026-07-19 FHFBO - Jul 19, 15:35 UTCJul 19, 16:15 UTC40m
2026-07-19 FHFBO - Jul 19, 10:00 UTCJul 19, 10:15 UTC15m
2026-07-19 FHFBO - Jul 19, 07:55 UTCJul 19, 08:15 UTC20m
2026-07-18 FHFBO - Jul 18, 16:35 UTCJul 18, 16:50 UTC15m
2026-07-18 FHFBO - Jul 18, 15:45 UTCJul 18, 16:00 UTC15m
2026-07-18 FHFBO - Jul 18, 14:05 UTCJul 18, 14:25 UTC20m
2026-07-18 FHFBO - Jul 18, 12:20 UTCJul 18, 13:30 UTC1h 10m
2026-07-17 FHFBO - Jul 17, 12:25 UTCJul 17, 14:00 UTC1h 35m
2026-07-17 FHFBO - Jul 17, 11:10 UTCJul 17, 11:45 UTC35m
2026-07-17 FHFBO - Jul 17, 09:40 UTCJul 17, 10:35 UTC55m
2026-07-14 FHFBO EBU → EBU Jul 14, 20:45 UTCJul 14, 21:50 UTC1h 5m
2026-07-14 FHFBO - Jul 14, 07:30 UTCJul 14, 08:40 UTC1h 10m
2026-07-14 FHFBO - Jul 14, 05:50 UTCJul 14, 06:55 UTC1h 5m
2026-07-13 FHFBO - Jul 13, 08:25 UTCJul 13, 10:05 UTC1h 40m
2026-07-12 FHFBO - Jul 12, 18:25 UTCJul 12, 19:35 UTC1h 10m
2026-07-12 FHFBO EBU → EBU Jul 12, 07:35 UTCJul 12, 08:40 UTC1h 5m
2026-07-11 FHFBO - Jul 11, 19:50 UTCJul 11, 20:15 UTC25m
2026-07-11 FHFBO - Jul 11, 09:10 UTCJul 11, 10:10 UTC1h 0m
2026-07-11 FHFBO EBU → EBU Jul 11, 07:20 UTCJul 11, 08:10 UTC50m
2026-07-10 FHFBO EBU → EBU Jul 10, 14:20 UTCJul 10, 14:45 UTC25m
2026-07-10 FHFBO - Jul 10, 08:05 UTCJul 10, 09:05 UTC1h 0m
2026-07-10 FHFBO - Jul 10, 06:15 UTCJul 10, 07:25 UTC1h 10m
2026-07-08 FHFBO - Jul 8, 16:15 UTCJul 8, 16:30 UTC15m
2026-07-05 FHFBO EBU → EBU Jul 5, 18:35 UTCJul 5, 19:05 UTC30m
2026-07-05 FHFBO EBU → EBU Jul 5, 10:20 UTCJul 5, 10:45 UTC25m
2026-07-05 FHFBO - Jul 5, 08:20 UTCJul 5, 09:20 UTC1h 0m
2026-07-04 FHFBO - Jul 4, 09:25 UTCJul 4, 10:30 UTC1h 5m
2026-07-04 FHFBO - Jul 4, 07:40 UTCJul 4, 08:25 UTC45m

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

Mode-S 39942E frequently asked

What is Mode-S code 39942E?
39942E is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HFBO.
Where is Mode-S 39942E registered?
Mode-S code 39942E is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39942E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39942E, octal 16312056, decimal 3,773,486.
What flights does 39942E operate?
Mode-S 39942E has broadcast 1 distinct callsign, including FHFBO.