sensors Mode-S transponder

39C425

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HRBF · BOEING 787-9 Dreamliner

Hex
39C425
Octal
16342045
Decimal
3,785,765
Country
FR
Tail
F-HRBF
Type
B789
Broadcasting now · callsign AFR158M · 38,000 ft
Flights observed
100
Distinct callsigns
20
Country
FR
Last broadcast
6h ago

Current position

39C425 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39C425 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
AFR202 Air France 15 2026-05-29
AFR201 Air France 11 2026-05-29
AFR291 Air France 8 2026-05-28
AFR940 Air France 7 2026-04-18
AFR292 Air France 7 2026-05-27
AFR158M Air France 7 2026-05-30
AFR343 Air France 5 2026-05-17
AFR342T Air France 5 2026-05-17
AFR159X Air France 5 2026-05-18
AFR415 Air France 4 2026-04-15
AFR902 Air France 3 2026-04-23
AFR75K Air France 3 2026-04-29
AFR579 Air France 3 2026-05-20
AFR416 - 3 2026-04-14
AFR182 Air France 3 2026-05-21
AFR181 Air France 3 2026-05-22
AFR074 Air France 3 2026-04-29
AFR33J Air France 2 2026-05-10
AFR32J Air France 2 2026-05-09
AFR926 Air France 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFR158M CDG → DFW May 30, 09:05 UTCMay 30, 10:30 UTC1h 25m
2026-05-29 AFR201 PEK → CDG May 29, 16:05 UTCMay 30, 04:00 UTC11h 55m
2026-05-29 AFR202 CDG → BOM May 29, 06:45 UTCMay 29, 07:05 UTC20m
2026-05-28 AFR202 CDG → BOM May 28, 21:00 UTCMay 29, 01:00 UTC4h 0m
2026-05-28 AFR291 KIX → CDG May 28, 02:35 UTCMay 28, 16:35 UTC14h 0m
2026-05-27 AFR292 CDG → KIX May 27, 12:15 UTCMay 28, 00:20 UTC12h 5m
2026-05-26 AFR201 PEK → CDG May 26, 22:50 UTCMay 27, 03:20 UTC4h 30m
2026-05-26 AFR202 CDG → BOM May 26, 07:05 UTCMay 26, 07:24 UTC20m
2026-05-25 AFR202 CDG → BOM May 25, 21:04 UTCMay 26, 01:24 UTC4h 20m
2026-05-25 AFR291 KIX → CDG May 25, 04:00 UTCMay 25, 17:40 UTC13h 40m
2026-05-24 AFR292 CDG → KIX May 24, 12:15 UTCMay 24, 23:46 UTC11h 31m
2026-05-23 AFR201 PEK → CDG May 23, 19:25 UTCMay 24, 03:15 UTC7h 50m
2026-05-23 AFR201 PEK → CDG May 23, 01:20 UTCMay 23, 23:50 UTC22h 30m
2026-05-22 AFR201 PEK → CDG May 22, 23:20 UTCMay 23, 23:15 UTC23h 55m
2026-05-22 AFR202 CDG → BOM May 22, 21:20 UTCMay 23, 19:30 UTC22h 10m
2026-05-22 AFR202 CDG → BOM May 22, 21:05 UTCMay 23, 01:20 UTC4h 15m
2026-05-22 AFR181 SIN → CDG May 22, 03:00 UTCMay 22, 16:05 UTC13h 5m
2026-05-21 AFR182 CDG → SIN May 21, 12:15 UTCMay 22, 00:30 UTC12h 15m
2026-05-20 AFR579 CKY → CDG May 20, 17:00 UTCMay 21, 06:20 UTC13h 20m
2026-05-19 AFR579 CKY → CDG May 19, 16:30 UTCMay 20, 06:15 UTC13h 46m
2026-05-18 AFR159X DFW → CDG May 18, 21:10 UTCMay 19, 05:45 UTC8h 35m
2026-05-18 AFR158M CDG → DFW May 18, 08:50 UTCMay 18, 18:20 UTC9h 30m
2026-05-17 AFR343 YUL → CDG May 17, 21:25 UTCMay 18, 03:35 UTC6h 10m
2026-05-17 AFR342T CDG → YUL May 17, 09:00 UTCMay 17, 16:10 UTC7h 10m
2026-05-16 AFR343 YUL → CDG May 16, 21:20 UTCMay 17, 03:35 UTC6h 15m
2026-05-16 AFR342T CDG → YUL May 16, 09:35 UTCMay 16, 16:31 UTC6h 55m
2026-05-15 AFR579 CKY → CDG May 15, 16:25 UTCMay 16, 06:31 UTC14h 6m
2026-05-13 AFR343 YUL → CDG May 13, 21:15 UTCMay 14, 03:35 UTC6h 20m
2026-05-13 AFR342T CDG → YUL May 13, 09:00 UTCMay 13, 16:00 UTC7h 0m
2026-05-12 AFR159X DFW → CDG May 12, 21:10 UTCMay 13, 05:55 UTC8h 45m
2026-05-12 AFR158M CDG → DFW May 12, 08:55 UTCMay 12, 18:45 UTC9h 50m
2026-05-11 AFR201 PEK → CDG May 11, 22:35 UTCMay 12, 03:20 UTC4h 46m
2026-05-11 AFR202 CDG → BOM May 11, 01:20 UTCMay 11, 22:35 UTC21h 15m
2026-05-10 AFR202 CDG → BOM May 10, 23:19 UTCMay 11, 22:35 UTC23h 15m
2026-05-10 AFR202 CDG → BOM May 10, 21:25 UTCMay 11, 01:30 UTC4h 5m
2026-05-10 AFR33J ATL → CDG May 10, 00:20 UTCMay 10, 08:10 UTC7h 50m
2026-05-09 AFR32J CDG → ATL May 9, 12:40 UTCMay 9, 21:30 UTC8h 50m
2026-05-09 AFR33J ATL → CDG May 9, 00:15 UTCMay 9, 08:15 UTC8h 0m
2026-05-08 AFR32J CDG → ATL May 8, 12:30 UTCMay 8, 21:20 UTC8h 50m
2026-05-07 AFR159X DFW → CDG May 7, 21:15 UTCMay 8, 05:44 UTC8h 30m
2026-05-07 AFR158M CDG → DFW May 7, 09:05 UTCMay 7, 19:00 UTC9h 55m
2026-05-06 AFR201 PEK → CDG May 6, 15:40 UTCMay 7, 03:30 UTC11h 49m
2026-05-05 AFR202 CDG → BOM May 5, 20:55 UTCMay 6, 07:15 UTC10h 20m
2026-05-04 AFR159X DFW → CDG May 4, 21:10 UTCMay 5, 05:55 UTC8h 45m
2026-05-04 AFR158M CDG → DFW May 4, 15:05 UTCMay 4, 18:45 UTC3h 41m
2026-05-04 AFR158M CDG → DFW May 4, 09:05 UTCMay 4, 15:00 UTC5h 55m
2026-05-03 AFR201 PEK → CDG May 3, 22:39 UTCMay 4, 03:19 UTC4h 40m
2026-05-03 AFR201 PEK → CDG May 3, 15:40 UTCMay 3, 15:50 UTC10m
2026-05-03 AFR202 CDG → BOM May 3, 07:20 UTCMay 3, 07:40 UTC20m
2026-05-02 AFR202 CDG → BOM May 2, 21:05 UTCMay 3, 01:20 UTC4h 15m

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

Mode-S 39C425 frequently asked

What is Mode-S code 39C425?
39C425 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HRBF.
Where is Mode-S 39C425 registered?
Mode-S code 39C425 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39C425 broadcasting right now?
Yes. Mode-S 39C425 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39C425, octal 16342045, decimal 3,785,765.
What flights does 39C425 operate?
Mode-S 39C425 has broadcast 20 distinct callsigns, including AFR202, AFR201, AFR291, AFR940, AFR292.