Apparatus

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sensors Mode-S transponder

39CF12

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HTYS · AIRBUS A-350-900

Hex
39CF12
Octal
16347422
Decimal
3,788,562
Country
FR
Tail
F-HTYS
Type
A359
No current signal · last broadcast 10h ago
Flights observed
161
Distinct callsigns
20
Country
FR
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 39CF12.

Country allocation

The ICAO 24-bit address 39CF12 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
AFR468 Air France 8 2026-05-08
AFR407 - 8 2026-07-11
AFR375G - 8 2026-07-07
AFR754 Air France 7 2026-04-23
AFR477 Air France 7 2026-05-09
AFR435 - 7 2026-06-18
AFR374F - 7 2026-07-07
AFR406 - 5 2026-07-10
AFR253 - 5 2026-07-10
AFR194 Air France 5 2026-05-28
AFR490 - 4 2026-07-14
AFR436 - 4 2026-06-18
AFR191 Air France 4 2026-05-28
AFR491 - 3 2026-06-28
AFR431 Air France 3 2026-05-11
AFR338 Air France 3 2026-06-16
AFR337P - 3 2026-06-16
AFR332 - 3 2026-04-13
AFR258 - 3 2026-07-09
AFR179 - 3 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR490 - Jul 14, 15:00 UTCJul 14, 16:25 UTC1h 25m
2026-07-14 AFR179 - Jul 14, 01:35 UTCJul 14, 11:50 UTC10h 15m
2026-07-13 AFR178 - Jul 13, 11:55 UTCJul 13, 23:00 UTC11h 5m
2026-07-11 AFR407 - Jul 11, 22:01 UTCJul 12, 08:20 UTC10h 20m
2026-07-11 AFR407 - Jul 11, 19:15 UTCJul 11, 19:25 UTC10m
2026-07-10 AFR406 - Jul 10, 21:35 UTCJul 11, 08:15 UTC10h 40m
2026-07-10 AFR253 - Jul 10, 07:05 UTCJul 10, 17:00 UTC9h 55m
2026-07-09 AFR253 - Jul 9, 20:35 UTCJul 10, 17:00 UTC20h 25m
2026-07-09 AFR253 - Jul 9, 19:55 UTCJul 10, 17:00 UTC21h 5m
2026-07-09 AFR253 - Jul 9, 16:45 UTCJul 10, 16:30 UTC23h 45m
2026-07-09 AFR258 - Jul 9, 14:35 UTCJul 10, 13:20 UTC22h 45m
2026-07-09 AFR258 - Jul 9, 13:30 UTCJul 10, 12:30 UTC23h 0m
2026-07-08 AFR465 - Jul 8, 10:35 UTCJul 9, 05:55 UTC19h 20m
2026-07-08 AFR476 - Jul 8, 08:35 UTCJul 9, 05:55 UTC21h 20m
2026-07-07 AFR375G - Jul 7, 20:50 UTCJul 8, 05:35 UTC8h 45m
2026-07-07 AFR374F - Jul 7, 08:45 UTCJul 7, 18:20 UTC9h 35m
2026-07-06 AFR375G - Jul 6, 20:55 UTCJul 7, 05:55 UTC9h 0m
2026-07-06 AFR374F - Jul 6, 09:05 UTCJul 6, 18:25 UTC9h 20m
2026-07-05 AFR333F - Jul 5, 23:45 UTCJul 6, 05:40 UTC5h 55m
2026-07-04 AFR52X - Jul 4, 16:20 UTCJul 5, 00:10 UTC7h 50m
2026-07-04 AFR179 - Jul 4, 02:55 UTCJul 4, 12:55 UTC10h 0m
2026-07-03 AFR178 - Jul 3, 11:50 UTCJul 3, 22:50 UTC11h 0m
2026-07-02 AFR75K - Jul 2, 22:50 UTCJul 3, 06:05 UTC7h 15m
2026-07-02 AFR074 - Jul 2, 11:35 UTCJul 2, 19:40 UTC8h 5m
2026-07-01 AFR097 - Jul 1, 03:15 UTCJul 1, 11:30 UTC8h 15m
2026-06-30 AFR096 - Jun 30, 15:05 UTCJul 1, 00:10 UTC9h 5m
2026-06-30 AFR097 - Jun 30, 04:15 UTCJun 30, 12:00 UTC7h 45m
2026-06-29 AFR096 - Jun 29, 16:35 UTCJun 30, 01:55 UTC9h 21m
2026-06-28 AFR491 - Jun 28, 22:29 UTCJun 29, 13:00 UTC14h 30m
2026-06-28 AFR491 - Jun 28, 14:34 UTCJun 29, 13:00 UTC22h 25m
2026-06-28 AFR490 - Jun 28, 14:04 UTCJun 29, 12:29 UTC22h 25m
2026-06-27 AFR511 - Jun 27, 22:20 UTCJun 28, 08:39 UTC10h 20m
2026-06-27 AFR512 - Jun 27, 09:15 UTCJun 27, 19:49 UTC10h 35m
2026-06-19 AFR579 - Jun 19, 07:29 UTCJun 19, 09:44 UTC2h 15m
2026-06-18 AFR578 CDG → CKY Jun 18, 15:55 UTCJun 19, 01:50 UTC9h 54m
2026-06-18 AFR435 - Jun 18, 03:25 UTCJun 18, 13:10 UTC9h 45m
2026-06-18 AFR436 - Jun 18, 00:25 UTCJun 18, 00:45 UTC20m
2026-06-17 AFR436 - Jun 17, 14:45 UTCJun 17, 22:25 UTC7h 40m
2026-06-16 AFR337P - Jun 16, 20:55 UTCJun 17, 06:05 UTC9h 10m
2026-06-16 AFR338 CDG → SEA Jun 16, 09:00 UTCJun 16, 18:20 UTC9h 20m
2026-06-15 AFR407 - Jun 15, 16:09 UTCJun 16, 03:30 UTC11h 20m
2026-06-15 AFR407 - Jun 15, 14:30 UTCJun 15, 14:40 UTC10m
2026-06-14 AFR406 - Jun 14, 21:35 UTCJun 15, 08:20 UTC10h 45m
2026-06-14 AFR199 BKK → CDG Jun 14, 04:40 UTCJun 14, 16:45 UTC12h 5m
2026-06-13 AFR198 CDG → BKK Jun 13, 15:20 UTCJun 14, 01:50 UTC10h 30m
2026-06-13 AFR179 - Jun 13, 01:55 UTCJun 13, 12:10 UTC10h 14m
2026-06-12 AFR178 CDG → MEX Jun 12, 11:45 UTCJun 12, 22:50 UTC11h 5m
2026-06-12 AFR669 JIB → CDG Jun 12, 00:05 UTCJun 12, 03:30 UTC3h 26m
2026-06-11 AFR669 JIB → CDG Jun 11, 01:00 UTCJun 12, 00:30 UTC23h 30m
2026-06-10 AFR668 CDG → JIB Jun 10, 21:35 UTCJun 11, 01:00 UTC3h 25m

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

Mode-S 39CF12 frequently asked

What is Mode-S code 39CF12?
39CF12 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTYS.
Where is Mode-S 39CF12 registered?
Mode-S code 39CF12 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CF12 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CF12, octal 16347422, decimal 3,788,562.
What flights does 39CF12 operate?
Mode-S 39CF12 has broadcast 20 distinct callsigns, including AFR468, AFR407, AFR375G, AFR754, AFR477.