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sensors Mode-S transponder

39AB12

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HKYS · AIRBUS A-330-900

Hex
39AB12
Octal
16325422
Decimal
3,779,346
Country
FR
Tail
F-HKYS
Type
A339
No current signal · last broadcast Jul 26, 16:55 UTC
Flights observed
147
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 16:55 UTC

Last known position

Most recent position reported by Mode-S 39AB12.

Country allocation

The ICAO 24-bit address 39AB12 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 20 distinct

Callsign Airline Flights Last seen
CRL636 - 22 2026-07-22
CRL637 Corsairfly 16 2026-07-20
CRL984 Corsairfly 14 2026-07-26
CRL985 Corsairfly 11 2026-07-24
CRL925 Corsairfly 8 2026-07-26
CRL772 Corsairfly 8 2026-07-18
CRL948 Corsairfly 6 2026-07-25
CRL872 - 6 2026-04-14
CRL870 Corsairfly 6 2026-04-23
CRL926 - 5 2026-06-19
CRL924 - 5 2026-07-12
CRL866 Corsairfly 4 2026-05-28
CRL785 - 4 2026-07-02
CRL949 - 3 2026-07-01
CRL943 - 3 2026-07-13
CRL927 Corsairfly 3 2026-05-05
CRL907 - 3 2026-07-04
CRL773 Corsairfly 3 2026-07-24
CRL774 - 2 2026-07-16
CRL740 Corsairfly 2 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CRL984 ORY → ABJ Jul 26, 15:15 UTCJul 26, 16:55 UTC1h 40m
2026-07-26 CRL925 FDF → ORY Jul 26, 04:45 UTCJul 26, 08:10 UTC3h 26m
2026-07-26 CRL925 FDF → ORY Jul 26, 00:05 UTCJul 26, 00:20 UTC15m
2026-07-25 CRL948 ORY → FDF Jul 25, 19:00 UTCJul 25, 19:20 UTC20m
2026-07-25 CRL948 ORY → FDF Jul 25, 11:15 UTCJul 25, 12:35 UTC1h 20m
2026-07-24 CRL985 ABJ → ORY Jul 24, 15:25 UTCJul 25, 06:00 UTC14h 35m
2026-07-24 CRL773 RUN → ORY Jul 24, 00:30 UTCJul 24, 04:50 UTC4h 20m
2026-07-22 CRL636 - Jul 22, 21:05 UTCJul 23, 00:00 UTC2h 55m
2026-07-22 CRL636 TLS → MRS Jul 22, 17:50 UTCJul 22, 18:30 UTC40m
2026-07-20 CRL636 - Jul 20, 21:10 UTCJul 20, 23:30 UTC2h 20m
2026-07-20 CRL636 - Jul 20, 17:35 UTCJul 20, 18:15 UTC40m
2026-07-20 CRL637 MRS → LYS Jul 20, 06:40 UTCJul 20, 07:20 UTC40m
2026-07-20 CRL637 MRS → LYS Jul 20, 01:15 UTCJul 20, 04:55 UTC3h 40m
2026-07-18 CRL772 ORY → DZA Jul 18, 19:35 UTCJul 18, 22:25 UTC2h 50m
2026-07-18 CRL775 RUN → ORY Jul 18, 01:10 UTCJul 18, 05:05 UTC3h 56m
2026-07-16 CRL774 - Jul 16, 19:35 UTCJul 16, 23:20 UTC3h 45m
2026-07-13 CRL943 - Jul 13, 14:35 UTCJul 14, 09:35 UTC19h 0m
2026-07-13 CRL925 - Jul 13, 06:30 UTCJul 13, 08:10 UTC1h 40m
2026-07-12 CRL924 - Jul 12, 12:25 UTCJul 12, 13:30 UTC1h 5m
2026-07-11 CRL984 ORY → ORY Jul 11, 15:55 UTCJul 12, 06:55 UTC15h 0m
2026-07-10 CRL943 ORY → ORY Jul 10, 14:50 UTCJul 11, 09:40 UTC18h 50m
2026-07-08 CRL636 MRS → RUN Jul 8, 20:40 UTCJul 8, 23:00 UTC2h 20m
2026-07-08 CRL636 MRS → RUN Jul 8, 17:25 UTCJul 8, 18:10 UTC45m
2026-07-08 CRL637 MRS → TLS Jul 8, 07:50 UTCJul 8, 08:25 UTC35m
2026-07-06 CRL636 MRS → RUN Jul 6, 22:10 UTCJul 7, 00:30 UTC2h 20m
2026-07-06 CRL636 MRS → RUN Jul 6, 17:30 UTCJul 6, 18:10 UTC40m
2026-07-06 CRL637 - Jul 6, 06:55 UTCJul 6, 07:35 UTC40m
2026-07-06 CRL637 - Jul 6, 01:25 UTCJul 6, 05:00 UTC3h 35m
2026-07-04 CRL772 - Jul 4, 20:00 UTCJul 4, 23:50 UTC3h 50m
2026-07-04 CRL907 - Jul 4, 12:55 UTCJul 4, 16:50 UTC3h 55m
2026-07-03 CRL907 - Jul 3, 18:35 UTCJul 4, 16:50 UTC22h 15m
2026-07-03 CRL907 - Jul 3, 16:35 UTCJul 4, 16:30 UTC23h 55m
2026-07-03 CRL906 - Jul 3, 16:10 UTCJul 4, 14:30 UTC22h 20m
2026-07-02 CRL785 - Jul 2, 12:35 UTCJul 3, 07:30 UTC18h 55m
2026-07-02 CRL785 ORY → ORY Jul 2, 11:45 UTCJul 3, 07:30 UTC19h 45m
2026-07-01 CRL949 - Jul 1, 12:35 UTCJul 2, 06:41 UTC18h 6m
2026-07-01 CRL948 ORY → ORY Jul 1, 11:35 UTCJul 2, 06:41 UTC19h 6m
2026-06-30 CRL924 - Jun 30, 12:15 UTCJul 1, 08:30 UTC20h 15m
2026-06-30 CRL925 - Jun 30, 06:20 UTCJun 30, 07:40 UTC1h 20m
2026-06-29 CRL924 - Jun 29, 12:24 UTCJun 29, 13:54 UTC1h 30m
2026-06-28 CRL785 - Jun 28, 14:34 UTCJun 29, 08:50 UTC18h 15m
2026-06-28 CRL785 - Jun 28, 12:35 UTCJun 29, 08:50 UTC20h 15m
2026-06-28 CRL784 ORY → ORY Jun 28, 11:59 UTCJun 29, 08:50 UTC20h 50m
2026-06-27 CRL984 ORY → ABJ Jun 27, 15:55 UTCJun 28, 06:55 UTC15h 0m
2026-06-26 CRL984 ORY → ABJ Jun 26, 15:05 UTCJun 27, 06:15 UTC15h 10m
2026-06-26 CRL773 - Jun 26, 02:34 UTCJun 26, 05:30 UTC2h 55m
2026-06-24 CRL636 MRS → RUN Jun 24, 21:04 UTCJun 25, 00:14 UTC3h 10m
2026-06-24 CRL636 MRS → RUN Jun 24, 18:15 UTCJun 24, 18:50 UTC35m
2026-06-24 CRL637 MRS → TLS Jun 24, 06:59 UTCJun 24, 07:44 UTC45m
2026-06-24 CRL637 - Jun 24, 01:55 UTCJun 24, 04:59 UTC3h 5m

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

Mode-S 39AB12 frequently asked

What is Mode-S code 39AB12?
39AB12 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HKYS.
Where is Mode-S 39AB12 registered?
Mode-S code 39AB12 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39AB12 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39AB12, octal 16325422, decimal 3,779,346.
What flights does 39AB12 operate?
Mode-S 39AB12 has broadcast 20 distinct callsigns, including CRL636, CRL637, CRL984, CRL985, CRL925.