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
No current signal · last broadcast 2d ago
Flights observed
31
Distinct callsigns
14
Country
FR
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 39C5A1.

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 14 distinct

Callsign Airline Flights Last seen
CRL910 Corsairfly 5 2026-04-29
CRL636 Corsairfly 5 2026-05-27
CRL958 Corsairfly 4 2026-05-08
CRL927 Corsairfly 3 2026-05-06
CRL959 Corsairfly 2 2026-05-10
CRL925 Corsairfly 2 2026-04-22
CRL911 Corsairfly 2 2026-05-01
CRL637 Corsairfly 2 2026-05-27
CRL985 Corsairfly 1 2026-05-07
CRL984 Corsairfly 1 2026-04-23
CRL926 Corsairfly 1 2026-04-27
CRL775 Corsairfly 1 2026-04-26
CRL774 Corsairfly 1 2026-04-24
CRL772 Corsairfly 1 2026-05-23

Recent flights last 31

DateFlightRouteTakeoffLandingDuration
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
2026-05-01 CRL958 ORY → MRU May 1, 20:05 UTCMay 1, 22:55 UTC2h 50m
2026-05-01 CRL911 RUN → ORY May 1, 02:00 UTCMay 1, 05:40 UTC3h 40m
2026-04-29 CRL910 ORY → RUN Apr 29, 19:20 UTCApr 29, 22:15 UTC2h 55m
2026-04-27 CRL927 PTP → ORY Apr 27, 12:20 UTCApr 28, 07:50 UTC19h 30m
2026-04-27 CRL926 ORY → PTP Apr 27, 10:40 UTCApr 28, 07:50 UTC21h 10m
2026-04-26 CRL775 RUN → ORY Apr 26, 02:20 UTCApr 26, 05:40 UTC3h 20m
2026-04-24 CRL774 ORY → TNR Apr 24, 19:35 UTCApr 24, 23:40 UTC4h 5m
2026-04-23 CRL984 ORY → ABJ Apr 23, 15:05 UTCApr 24, 06:35 UTC15h 30m
2026-04-22 CRL925 FDF → ORY Apr 22, 12:20 UTCApr 23, 07:45 UTC19h 25m
2026-04-22 CRL925 FDF → ORY Apr 22, 12:00 UTCApr 23, 07:45 UTC19h 45m
2026-04-19 CRL910 ORY → RUN Apr 19, 19:35 UTCApr 19, 22:25 UTC2h 50m
2026-04-17 CRL958 - Apr 17, 21:25 UTCApr 17, 22:55 UTC1h 30m
2026-04-17 CRL958 - Apr 17, 20:00 UTCApr 17, 21:20 UTC1h 20m
2026-04-15 CRL910 - Apr 15, 21:05 UTCApr 15, 22:35 UTC1h 30m
2026-04-15 CRL910 - Apr 15, 19:30 UTCApr 15, 21:00 UTC1h 30m
2026-04-14 CRL911 RUN → ORY Apr 14, 05:15 UTCApr 14, 05:20 UTC5m
2026-04-12 CRL910 - Apr 12, 19:25 UTCApr 12, 20:15 UTC50m

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?
No active broadcast right now. Last signal was 2d ago.
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 14 distinct callsigns, including CRL910, CRL636, CRL958, CRL927, CRL959.