Apparatus

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sensors Mode-S transponder

39B054

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HMCU · CESSNA 510 Citation Mustang

Hex
39B054
Octal
16330124
Decimal
3,780,692
Country
FR
Tail
F-HMCU
Type
C510
No current signal · last broadcast 13d ago
Flights observed
126
Distinct callsigns
1
Country
FR
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S 39B054.

Country allocation

The ICAO 24-bit address 39B054 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
OYO11 - 126 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 OYO11 - Jul 4, 10:55 UTCJul 4, 12:40 UTC1h 45m
2026-07-04 OYO11 - Jul 4, 06:35 UTCJul 4, 07:10 UTC35m
2026-07-04 OYO11 LYN → LYN Jul 4, 06:20 UTCJul 4, 06:25 UTC5m
2026-07-03 OYO11 - Jul 3, 06:15 UTCJul 3, 06:50 UTC35m
2026-07-03 OYO11 - Jul 3, 02:20 UTCJul 3, 02:55 UTC35m
2026-07-02 OYO11 MPL → LYN Jul 2, 06:51 UTCJul 2, 07:30 UTC39m
2026-07-02 OYO11 - Jul 2, 04:40 UTCJul 2, 06:15 UTC1h 35m
2026-07-01 OYO11 - Jul 1, 21:10 UTCJul 1, 22:55 UTC1h 45m
2026-07-01 OYO11 - Jul 1, 19:45 UTCJul 1, 20:20 UTC35m
2026-07-01 OYO11 - Jul 1, 14:00 UTCJul 1, 14:40 UTC40m
2026-07-01 OYO11 - Jul 1, 09:45 UTCJul 1, 10:30 UTC45m
2026-07-01 OYO11 - Jul 1, 00:25 UTCJul 1, 01:20 UTC55m
2026-06-30 OYO11 - Jun 30, 18:45 UTCJun 30, 20:25 UTC1h 40m
2026-06-29 OYO11 - Jun 29, 10:40 UTCJun 29, 13:00 UTC2h 20m
2026-06-29 OYO11 - Jun 29, 06:44 UTCJun 29, 07:40 UTC55m
2026-06-29 OYO11 - Jun 29, 05:24 UTCJun 29, 06:14 UTC50m
2026-06-27 OYO11 - Jun 27, 22:04 UTCJun 27, 23:25 UTC1h 20m
2026-06-27 OYO11 - Jun 27, 16:39 UTCJun 27, 18:09 UTC1h 30m
2026-06-26 OYO11 - Jun 26, 11:30 UTCJun 26, 12:10 UTC40m
2026-06-26 OYO11 LYN → NCE Jun 26, 09:45 UTCJun 26, 10:35 UTC50m
2026-06-24 OYO11 - Jun 24, 02:54 UTCJun 24, 04:00 UTC1h 5m
2026-06-23 OYO11 - Jun 23, 20:24 UTCJun 23, 21:34 UTC1h 10m
2026-06-21 OYO11 - Jun 21, 16:44 UTCJun 21, 16:59 UTC15m
2026-06-21 OYO11 LYN → LYN Jun 21, 12:44 UTCJun 21, 14:50 UTC2h 5m
2026-06-19 OYO11 - Jun 19, 18:44 UTCJun 19, 19:09 UTC25m
2026-06-19 OYO11 - Jun 19, 17:09 UTCJun 19, 17:49 UTC40m
2026-06-19 OYO11 LYN → LBG Jun 19, 09:59 UTCJun 19, 11:30 UTC1h 30m
2026-06-16 OYO11 - Jun 16, 23:15 UTCJun 16, 23:55 UTC40m
2026-06-16 OYO11 - Jun 16, 22:00 UTCJun 16, 22:50 UTC50m
2026-06-16 OYO11 - Jun 16, 18:09 UTCJun 16, 18:29 UTC20m
2026-06-16 OYO11 - Jun 16, 15:24 UTCJun 16, 17:05 UTC1h 40m
2026-06-15 OYO11 GVA → LYN Jun 15, 21:09 UTCJun 15, 23:25 UTC2h 15m
2026-06-15 OYO11 - Jun 15, 19:55 UTCJun 15, 20:10 UTC15m
2026-06-14 OYO11 LYN → LYN Jun 14, 10:50 UTCJun 14, 12:30 UTC1h 40m
2026-06-14 OYO11 - Jun 14, 03:35 UTCJun 14, 04:10 UTC35m
2026-06-14 OYO11 - Jun 14, 02:05 UTCJun 14, 02:45 UTC40m
2026-06-14 OYO11 LYN → LYN Jun 14, 01:30 UTCJun 14, 02:00 UTC30m
2026-06-13 OYO11 - Jun 13, 10:55 UTCJun 13, 12:15 UTC1h 20m
2026-06-13 OYO11 - Jun 13, 05:30 UTCJun 13, 06:00 UTC30m
2026-06-13 OYO11 - Jun 13, 04:20 UTCJun 13, 04:50 UTC30m
2026-06-12 OYO11 - Jun 12, 12:25 UTCJun 12, 13:20 UTC55m
2026-05-23 OYO11 - May 23, 04:50 UTCMay 23, 07:05 UTC2h 15m
2026-05-22 OYO11 LYN → LYN May 22, 20:30 UTCMay 22, 22:55 UTC2h 25m
2026-05-20 OYO11 - May 20, 22:35 UTCMay 20, 23:30 UTC55m
2026-05-20 OYO11 - May 20, 18:55 UTCMay 20, 20:00 UTC1h 5m
2026-05-20 OYO11 LYN → LYN May 20, 18:25 UTCMay 20, 18:45 UTC20m
2026-05-19 OYO11 - May 19, 02:25 UTCMay 19, 03:25 UTC1h 0m
2026-05-18 OYO11 - May 18, 21:10 UTCMay 18, 22:20 UTC1h 10m
2026-05-18 OYO11 LYN → LYN May 18, 20:30 UTCMay 18, 20:55 UTC25m
2026-05-17 OYO11 - May 17, 16:10 UTCMay 17, 16:50 UTC40m

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

Mode-S 39B054 frequently asked

What is Mode-S code 39B054?
39B054 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HMCU.
Where is Mode-S 39B054 registered?
Mode-S code 39B054 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39B054 broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39B054, octal 16330124, decimal 3,780,692.
What flights does 39B054 operate?
Mode-S 39B054 has broadcast 1 distinct callsign, including OYO11.