Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

39A90B

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HKIL · CESSNA 510 Citation Mustang

Hex
39A90B
Octal
16324413
Decimal
3,778,827
Country
FR
Tail
F-HKIL
Type
C510
No current signal · last broadcast 1h ago
Flights observed
70
Distinct callsigns
1
Country
FR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 39A90B.

Country allocation

The ICAO 24-bit address 39A90B 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
OYO9 - 70 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-29 OYO9 - Jun 29, 14:25 UTCJun 29, 14:44 UTC20m
2026-06-29 OYO9 - Jun 29, 13:04 UTCJun 29, 13:39 UTC35m
2026-06-29 OYO9 LYN → LYN Jun 29, 12:45 UTCJun 29, 12:49 UTC5m
2026-06-25 OYO9 - Jun 25, 20:14 UTCJun 25, 21:25 UTC1h 10m
2026-06-25 OYO9 - Jun 25, 17:05 UTCJun 25, 18:15 UTC1h 10m
2026-06-24 OYO9 - Jun 24, 19:15 UTCJun 24, 21:50 UTC2h 35m
2026-06-24 OYO9 - Jun 24, 12:04 UTCJun 24, 12:54 UTC50m
2026-06-24 OYO9 - Jun 24, 09:59 UTCJun 24, 11:20 UTC1h 20m
2026-06-21 OYO9 - Jun 21, 22:04 UTCJun 21, 22:44 UTC40m
2026-06-21 OYO9 - Jun 21, 20:59 UTCJun 21, 21:34 UTC35m
2026-06-21 OYO9 NCE → NCE Jun 21, 20:29 UTCJun 21, 20:45 UTC15m
2026-06-21 OYO9 - Jun 21, 16:54 UTCJun 21, 18:35 UTC1h 40m
2026-06-19 OYO9 - Jun 19, 11:39 UTCJun 19, 12:04 UTC25m
2026-06-19 OYO9 - Jun 19, 10:19 UTCJun 19, 11:04 UTC45m
2026-06-19 OYO9 - Jun 19, 07:25 UTCJun 19, 08:09 UTC45m
2026-06-19 OYO9 - Jun 19, 06:35 UTCJun 19, 06:54 UTC20m
2026-06-19 OYO9 LYN → LYN Jun 19, 06:10 UTCJun 19, 06:29 UTC20m
2026-06-18 OYO9 - Jun 18, 14:05 UTCJun 18, 15:25 UTC1h 20m
2026-06-18 OYO9 - Jun 18, 12:45 UTCJun 18, 13:30 UTC45m
2026-06-17 OYO9 - Jun 17, 14:30 UTCJun 17, 15:25 UTC55m
2026-06-17 OYO9 - Jun 17, 11:50 UTCJun 17, 13:15 UTC1h 25m
2026-06-16 OYO9 - Jun 16, 16:30 UTCJun 16, 17:35 UTC1h 5m
2026-06-15 OYO9 - Jun 15, 12:05 UTCJun 15, 13:15 UTC1h 10m
2026-06-11 OYO9 - Jun 11, 14:20 UTCJun 11, 15:15 UTC55m
2026-06-11 OYO9 LYN → LUX Jun 11, 07:25 UTCJun 11, 08:35 UTC1h 10m
2026-06-10 OYO9 NCE → LYN Jun 10, 10:40 UTCJun 10, 11:25 UTC45m
2026-06-10 OYO9 NCE → NCE Jun 10, 10:20 UTCJun 10, 10:35 UTC15m
2026-06-10 OYO9 - Jun 10, 08:45 UTCJun 10, 09:45 UTC1h 0m
2026-06-10 OYO9 - Jun 10, 07:20 UTCJun 10, 08:15 UTC55m
2026-06-10 OYO9 LYN → LYN Jun 10, 07:05 UTCJun 10, 07:10 UTC5m
2026-06-07 OYO9 - Jun 7, 11:45 UTCJun 7, 12:55 UTC1h 10m
2026-06-07 OYO9 - Jun 7, 05:15 UTCJun 7, 06:40 UTC1h 25m
2026-06-05 OYO9 - Jun 5, 15:15 UTCJun 5, 16:05 UTC50m
2026-06-05 OYO9 - Jun 5, 13:55 UTCJun 5, 14:45 UTC50m
2026-06-05 OYO9 - Jun 5, 07:15 UTCJun 5, 08:00 UTC45m
2026-06-05 OYO9 - Jun 5, 05:10 UTCJun 5, 06:00 UTC50m
2026-06-05 OYO9 LYN → LYN Jun 5, 04:55 UTCJun 5, 05:00 UTC5m
2026-06-02 OYO9 - Jun 2, 15:25 UTCJun 2, 16:10 UTC45m
2026-06-02 OYO9 LYN → LBG Jun 2, 12:50 UTCJun 2, 13:55 UTC1h 5m
2026-05-28 OYO9 - May 28, 19:20 UTCMay 28, 19:45 UTC25m
2026-05-28 OYO9 - May 28, 17:45 UTCMay 28, 18:55 UTC1h 10m
2026-05-27 OYO9 LYN → LBG May 27, 14:15 UTCMay 27, 15:20 UTC1h 5m
2026-05-26 OYO9 - May 26, 17:35 UTCMay 26, 18:30 UTC55m
2026-05-26 OYO9 - May 26, 11:54 UTCMay 26, 12:50 UTC55m
2026-05-26 OYO9 LYN → LYN May 26, 11:39 UTCMay 26, 11:44 UTC5m
2026-05-25 OYO9 - May 25, 10:05 UTCMay 25, 10:50 UTC45m
2026-05-25 OYO9 - May 25, 08:45 UTCMay 25, 09:20 UTC35m
2026-05-25 OYO9 - May 25, 05:45 UTCMay 25, 06:30 UTC45m
2026-05-25 OYO9 - May 25, 04:15 UTCMay 25, 04:55 UTC40m
2026-05-24 OYO9 - May 24, 05:15 UTCMay 24, 06:00 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-HKIL page for operator, model, and routing details .

Mode-S 39A90B frequently asked

What is Mode-S code 39A90B?
39A90B is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HKIL.
Where is Mode-S 39A90B registered?
Mode-S code 39A90B is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39A90B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39A90B, octal 16324413, decimal 3,778,827.
What flights does 39A90B operate?
Mode-S 39A90B has broadcast 1 distinct callsign, including OYO9.