sensors Mode-S transponder

39CF0F

ICAO 24-bit transponder address · allocated to France

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

Hex
39CF0F
Octal
16347417
Decimal
3,788,559
Country
FR
Tail
F-HTYP
Type
A359
Broadcasting now · callsign AFR579 · 43,000 ft
Flights observed
222
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 21:35 UTC

Current position

39CF0F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39CF0F 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
AFR407 Air France 16 2026-07-24
AFR435 - 12 2026-07-03
AFR406 Air France 11 2026-07-23
AFR174 Air France 10 2026-05-28
AFR173 Air France 9 2026-05-29
AFR52X Air France 8 2026-06-07
AFR431 Air France 8 2026-05-31
AFR096 Air France 8 2026-07-21
AFR436 - 7 2026-07-03
AFR097 Air France 6 2026-07-22
AFR491 - 5 2026-07-10
AFR191 - 5 2026-06-11
AFR754 Air France 4 2026-05-26
AFR53M Air France 4 2026-05-31
AFR430 Air France 4 2026-05-31
AFR199 Air France 4 2026-07-23
AFR198 Air France 4 2026-07-22
AFR874 Air France 3 2026-05-27
AFR871 Air France 3 2026-04-18
AFR868 Air France 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFR490 CDG → PTY Jul 26, 14:10 UTCJul 26, 21:35 UTC7h 25m
2026-07-26 AFR57J LAS → CDG Jul 26, 01:10 UTCJul 26, 10:35 UTC9h 26m
2026-07-25 AFR56T CDG → LAS Jul 25, 12:05 UTCJul 25, 22:40 UTC10h 35m
2026-07-24 AFR407 SCL → CDG Jul 24, 17:10 UTCJul 25, 03:25 UTC10h 15m
2026-07-23 AFR406 CDG → SCL Jul 23, 21:50 UTCJul 23, 22:50 UTC1h 0m
2026-07-23 AFR199 BKK → CDG Jul 23, 05:00 UTCJul 23, 16:40 UTC11h 40m
2026-07-22 AFR198 CDG → BKK Jul 22, 14:55 UTCJul 23, 01:30 UTC10h 35m
2026-07-22 AFR097 MCO → CDG Jul 22, 02:55 UTCJul 22, 11:15 UTC8h 20m
2026-07-21 AFR096 CDG → MCO Jul 21, 15:05 UTCJul 21, 23:25 UTC8h 20m
2026-07-21 AFR179 MEX → CDG Jul 21, 02:00 UTCJul 21, 12:15 UTC10h 15m
2026-07-20 AFR178 CDG → MEX Jul 20, 12:20 UTCJul 20, 23:00 UTC10h 40m
2026-07-18 AFR995 JNB → CDG Jul 18, 17:05 UTCJul 19, 03:30 UTC10h 25m
2026-07-17 AFR990 - Jul 17, 22:20 UTCJul 18, 08:25 UTC10h 6m
2026-07-17 AFR097 - Jul 17, 03:14 UTCJul 17, 11:20 UTC8h 5m
2026-07-16 AFR096 - Jul 16, 15:05 UTCJul 16, 23:55 UTC8h 50m
2026-07-16 AFR097 MCO → CDG Jul 16, 03:10 UTCJul 16, 11:10 UTC8h 0m
2026-07-15 AFR096 - Jul 15, 15:05 UTCJul 15, 23:45 UTC8h 40m
2026-07-15 AFR179 - Jul 15, 01:30 UTCJul 15, 11:45 UTC10h 15m
2026-07-14 AFR178 - Jul 14, 12:00 UTCJul 14, 22:50 UTC10h 49m
2026-07-13 AFR357E YYZ → CDG Jul 13, 22:15 UTCJul 14, 05:05 UTC6h 50m
2026-07-13 AFR356G - Jul 13, 12:30 UTCJul 13, 19:45 UTC7h 15m
2026-07-13 AFR33J - Jul 13, 00:20 UTCJul 13, 08:15 UTC7h 55m
2026-07-12 AFR32J - Jul 12, 12:40 UTCJul 12, 21:10 UTC8h 30m
2026-07-12 AFR349 YUL → CDG Jul 12, 03:05 UTCJul 12, 09:25 UTC6h 20m
2026-07-11 AFR348F - Jul 11, 16:55 UTCJul 11, 23:40 UTC6h 45m
2026-07-10 AFR491 - Jul 10, 21:50 UTCJul 11, 13:10 UTC15h 20m
2026-07-10 AFR490 - Jul 10, 14:25 UTCJul 11, 11:45 UTC21h 21m
2026-07-10 AFR33J - Jul 10, 01:05 UTCJul 10, 09:00 UTC7h 55m
2026-07-09 AFR32J - Jul 9, 13:20 UTCJul 9, 22:10 UTC8h 50m
2026-07-09 AFR349 YUL → CDG Jul 9, 03:15 UTCJul 9, 09:30 UTC6h 15m
2026-07-08 AFR348F - Jul 8, 17:00 UTCJul 8, 23:55 UTC6h 55m
2026-07-07 AFR491 - Jul 7, 23:05 UTCJul 8, 13:30 UTC14h 25m
2026-07-07 AFR491 - Jul 7, 15:50 UTCJul 8, 13:30 UTC21h 40m
2026-07-07 AFR490 - Jul 7, 15:25 UTCJul 8, 13:30 UTC22h 5m
2026-07-05 AFR097 - Jul 5, 03:20 UTCJul 5, 11:15 UTC7h 55m
2026-07-04 AFR096 - Jul 4, 15:45 UTCJul 5, 00:30 UTC8h 45m
2026-07-03 AFR435 - Jul 3, 22:00 UTCJul 4, 12:55 UTC14h 55m
2026-07-03 AFR436 - Jul 3, 15:50 UTCJul 4, 12:55 UTC21h 5m
2026-07-03 AFR436 - Jul 3, 14:30 UTCJul 4, 12:55 UTC22h 25m
2026-07-02 AFR375G YVR → CDG Jul 2, 21:00 UTCJul 3, 05:45 UTC8h 45m
2026-07-02 AFR374F - Jul 2, 09:20 UTCJul 2, 18:40 UTC9h 20m
2026-07-01 AFR741 SDQ → CDG Jul 1, 11:50 UTCJul 2, 06:00 UTC18h 10m
2026-06-30 AFR579 - Jun 30, 16:05 UTCJul 1, 06:50 UTC14h 45m
2026-06-30 AFR435 - Jun 30, 11:20 UTCJun 30, 12:45 UTC1h 25m
2026-06-29 AFR436 - Jun 29, 14:14 UTCJun 29, 23:25 UTC9h 10m
2026-06-29 AFR935 - Jun 29, 05:34 UTCJun 29, 09:10 UTC3h 35m
2026-06-28 AFR935 - Jun 28, 10:04 UTCJun 29, 09:10 UTC23h 5m
2026-06-27 AFR337P SEA → CDG Jun 27, 21:15 UTCJun 28, 06:44 UTC9h 30m
2026-06-27 AFR338 - Jun 27, 08:44 UTCJun 27, 18:09 UTC9h 25m
2026-06-25 AFR253 - Jun 25, 19:49 UTCJun 26, 15:25 UTC19h 35m

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

Mode-S 39CF0F frequently asked

What is Mode-S code 39CF0F?
39CF0F is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTYP.
Where is Mode-S 39CF0F registered?
Mode-S code 39CF0F is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CF0F broadcasting right now?
Yes. Mode-S 39CF0F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CF0F, octal 16347417, decimal 3,788,559.
What flights does 39CF0F operate?
Mode-S 39CF0F has broadcast 20 distinct callsigns, including AFR407, AFR435, AFR406, AFR174, AFR173.