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sensors Mode-S transponder

39C5A1

ICAO 24-bit transponder address · allocated to France

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

Hex
39C5A1
Octal
16342641
Decimal
3,786,145
Country
FR
Tail
F-HRNB
Type
A339
Broadcasting now · callsign CRL926 · 35,000 ft
Flights observed
67
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 10:25 UTC

Current position

39C5A1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39C5A1 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 Corsairfly 9 2026-07-15
CRL910 Corsairfly 6 2026-07-26
CRL927 - 5 2026-07-09
CRL925 Corsairfly 5 2026-07-24
CRL924 Corsairfly 5 2026-07-23
CRL958 Corsairfly 4 2026-05-08
CRL926 - 4 2026-07-04
CRL637 - 4 2026-07-15
CRL907 - 3 2026-07-11
CRL785 Corsairfly 3 2026-07-20
CRL984 Corsairfly 2 2026-07-19
CRL959 Corsairfly 2 2026-05-10
CRL911 Corsairfly 2 2026-05-01
CRL772 - 2 2026-07-11
CRL1925 Corsairfly 2 2026-07-26
CRL1924 Corsairfly 2 2026-07-25
CRL985 Corsairfly 1 2026-05-07
CRL949 - 1 2026-07-19
CRL948 - 1 2026-07-18
CRL906 - 1 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CRL910 ORY → RUN Jul 26, 07:30 UTCJul 26, 10:25 UTC2h 55m
2026-07-26 CRL1925 FDF → ORY Jul 26, 01:30 UTCJul 26, 04:55 UTC3h 25m
2026-07-25 CRL1925 FDF → ORY Jul 25, 20:50 UTCJul 25, 21:05 UTC15m
2026-07-25 CRL1924 ORY → FDF Jul 25, 16:35 UTCJul 25, 17:00 UTC25m
2026-07-25 CRL1924 ORY → FDF Jul 25, 09:00 UTCJul 25, 10:15 UTC1h 15m
2026-07-24 CRL925 FDF → ORY Jul 24, 05:55 UTCJul 24, 07:50 UTC1h 55m
2026-07-24 CRL925 FDF → ORY Jul 24, 00:00 UTCJul 24, 00:15 UTC15m
2026-07-23 CRL924 ORY → FDF Jul 23, 20:00 UTCJul 23, 20:25 UTC25m
2026-07-23 CRL924 ORY → FDF Jul 23, 12:30 UTCJul 23, 13:35 UTC1h 5m
2026-07-20 CRL785 ABJ → ORY Jul 20, 11:05 UTCJul 21, 06:05 UTC18h 59m
2026-07-19 CRL984 ORY → ABJ Jul 19, 15:00 UTCJul 20, 06:45 UTC15h 45m
2026-07-19 CRL949 - Jul 19, 07:15 UTCJul 19, 08:45 UTC1h 30m
2026-07-18 CRL948 - Jul 18, 11:05 UTCJul 18, 12:15 UTC1h 10m
2026-07-15 CRL636 - Jul 15, 21:40 UTCJul 16, 01:00 UTC3h 20m
2026-07-15 CRL636 MRS → RUN Jul 15, 17:10 UTCJul 15, 17:45 UTC35m
2026-07-15 CRL637 - Jul 15, 06:55 UTCJul 15, 07:30 UTC35m
2026-07-13 CRL636 MRS → RUN Jul 13, 19:55 UTCJul 13, 22:55 UTC3h 0m
2026-07-13 CRL636 MRS → RUN Jul 13, 17:15 UTCJul 13, 17:50 UTC35m
2026-07-13 CRL637 - Jul 13, 07:05 UTCJul 13, 07:40 UTC35m
2026-07-11 CRL772 - Jul 11, 20:00 UTCJul 11, 23:55 UTC3h 55m
2026-07-11 CRL907 - Jul 11, 12:20 UTCJul 11, 16:25 UTC4h 5m
2026-07-10 CRL907 - Jul 10, 18:20 UTCJul 11, 16:25 UTC22h 6m
2026-07-10 CRL907 - Jul 10, 16:20 UTCJul 11, 16:15 UTC23h 55m
2026-07-10 CRL906 - Jul 10, 15:55 UTCJul 11, 14:15 UTC22h 20m
2026-07-09 CRL927 ORY → ORY Jul 9, 11:00 UTCJul 10, 06:10 UTC19h 10m
2026-07-08 CRL925 - Jul 8, 06:25 UTCJul 8, 08:30 UTC2h 5m
2026-07-07 CRL924 - Jul 7, 12:25 UTCJul 7, 13:30 UTC1h 5m
2026-07-06 CRL785 ORY → ORY Jul 6, 12:30 UTCJul 7, 08:15 UTC19h 45m
2026-07-05 CRL785 - Jul 5, 12:20 UTCJul 6, 06:55 UTC18h 35m
2026-07-05 CRL784 ORY → ORY Jul 5, 11:15 UTCJul 6, 06:55 UTC19h 40m
2026-07-04 CRL926 ORY → ORY Jul 4, 11:05 UTCJul 5, 06:10 UTC19h 5m
2026-06-06 CRL924 ORY → FDF Jun 6, 12:20 UTCJun 7, 07:45 UTC19h 25m
2026-06-02 CRL927 PTP → ORY Jun 2, 12:20 UTCJun 3, 06:40 UTC18h 20m
2026-06-02 CRL926 ORY → PTP Jun 2, 11:30 UTCJun 3, 06:40 UTC19h 10m
2026-06-01 CRL926 ORY → PTP Jun 1, 10:35 UTCJun 2, 05:50 UTC19h 15m
2026-05-30 CRL924 ORY → FDF May 30, 12:15 UTCMay 30, 15:35 UTC3h 20m
2026-05-27 CRL636 MRS → RUN May 27, 19:55 UTCMay 27, 22:25 UTC2h 30m
2026-05-27 CRL636 MRS → RUN May 27, 17:30 UTCMay 27, 18:10 UTC40m
2026-05-27 CRL637 MRS → LYS May 27, 07:50 UTCMay 27, 08:20 UTC30m
2026-05-26 CRL636 MRS → RUN May 26, 00:39 UTCMay 26, 01:20 UTC40m
2026-05-25 CRL636 MRS → RUN May 25, 19:44 UTCMay 25, 22:15 UTC2h 30m
2026-05-25 CRL636 MRS → RUN May 25, 17:20 UTCMay 25, 17:55 UTC35m
2026-05-25 CRL637 MRS → LYS May 25, 06:45 UTCMay 25, 07:20 UTC35m
2026-05-23 CRL772 ORY → DZA May 23, 19:25 UTCMay 23, 23:00 UTC3h 35m
2026-05-10 CRL959 MRU → ORY May 10, 00:45 UTCMay 10, 04:39 UTC3h 55m
2026-05-08 CRL958 ORY → MRU May 8, 19:40 UTCMay 8, 23:25 UTC3h 45m
2026-05-07 CRL985 ABJ → ORY May 7, 15:55 UTCMay 8, 06:59 UTC15h 5m
2026-05-06 CRL927 PTP → ORY May 6, 04:50 UTCMay 6, 06:20 UTC1h 30m
2026-05-05 CRL927 PTP → ORY May 5, 10:25 UTCMay 6, 06:20 UTC19h 55m
2026-05-03 CRL959 MRU → ORY May 3, 00:15 UTCMay 3, 04:40 UTC4h 24m

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

Mode-S 39C5A1 frequently asked

What is Mode-S code 39C5A1?
39C5A1 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HRNB.
Where is Mode-S 39C5A1 registered?
Mode-S code 39C5A1 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39C5A1 broadcasting right now?
Yes. Mode-S 39C5A1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39C5A1, octal 16342641, decimal 3,786,145.
What flights does 39C5A1 operate?
Mode-S 39C5A1 has broadcast 20 distinct callsigns, including CRL636, CRL910, CRL927, CRL925, CRL924.