sensors Mode-S transponder

39CF0D

ICAO 24-bit transponder address · allocated to France

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

Hex
39CF0D
Octal
16347415
Decimal
3,788,557
Country
FR
Tail
F-HTYN
Type
A359
Broadcasting now · callsign AFR407 · 40,000 ft
Flights observed
108
Distinct callsigns
20
Country
FR
Last broadcast
6h ago

Current position

39CF0D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39CF0D 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
AFR477 Air France 10 2026-05-20
AFR468 Air France 10 2026-05-19
AFR407 Air France 9 2026-05-29
AFR551 Air France 7 2026-05-13
AFR435 Air France 6 2026-05-28
AFR253 Air France 6 2026-04-15
AFR436 Air France 5 2026-05-27
AFR406 Air France 5 2026-05-28
AFR258 Air France 5 2026-04-14
AFR191 Air France 5 2026-05-26
AFR736 - 4 2026-04-14
AFR570 Air France 4 2026-05-12
AFR431 Air France 4 2026-05-10
AFR194 Air France 4 2026-05-26
AFR57J Air France 2 2026-04-23
AFR56T Air France 2 2026-04-22
AFR332 Air France 2 2026-05-24
AFR995 Air France 1 2026-04-26
AFR990 Air France 1 2026-04-25
AFR871 Air France 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFR407 SCL → CDG May 29, 16:35 UTCMay 29, 19:20 UTC2h 45m
2026-05-29 AFR407 SCL → CDG May 29, 14:45 UTCMay 29, 14:55 UTC10m
2026-05-28 AFR406 CDG → SCL May 28, 22:30 UTCMay 29, 10:20 UTC11h 50m
2026-05-28 AFR435 MEX → CDG May 28, 03:35 UTCMay 28, 13:00 UTC9h 25m
2026-05-27 AFR436 CDG → BOG May 27, 14:50 UTCMay 28, 01:05 UTC10h 15m
2026-05-26 AFR191 BLR → CDG May 26, 20:24 UTCMay 27, 06:20 UTC9h 55m
2026-05-26 AFR194 CDG → BLR May 26, 08:45 UTCMay 26, 17:59 UTC9h 15m
2026-05-25 AFR331E BOS → CDG May 25, 02:00 UTCMay 25, 08:20 UTC6h 20m
2026-05-24 AFR332 CDG → BOS May 24, 23:00 UTCMay 24, 23:20 UTC20m
2026-05-24 AFR332 CDG → BOS May 24, 16:25 UTCMay 24, 17:55 UTC1h 30m
2026-05-24 AFR435 MEX → CDG May 24, 04:10 UTCMay 24, 13:35 UTC9h 25m
2026-05-23 AFR436 CDG → BOG May 23, 14:10 UTCMay 24, 00:30 UTC10h 21m
2026-05-22 AFR375G YVR → CDG May 22, 20:40 UTCMay 23, 05:35 UTC8h 54m
2026-05-22 AFR374F CDG → YVR May 22, 08:55 UTCMay 22, 18:05 UTC9h 10m
2026-05-21 AFR407 SCL → CDG May 21, 17:35 UTCMay 22, 03:40 UTC10h 5m
2026-05-20 AFR406 CDG → SCL May 20, 21:40 UTCMay 21, 09:05 UTC11h 25m
2026-05-20 AFR477 CDG → PTY May 20, 03:40 UTCMay 20, 16:00 UTC12h 21m
2026-05-19 AFR468 CDG → CCS May 19, 11:45 UTCMay 20, 01:10 UTC13h 25m
2026-05-18 AFR407 SCL → CDG May 18, 18:00 UTCMay 19, 03:55 UTC9h 54m
2026-05-18 AFR407 SCL → CDG May 18, 15:20 UTCMay 18, 15:30 UTC10m
2026-05-17 AFR406 CDG → SCL May 17, 22:50 UTCMay 18, 09:35 UTC10h 45m
2026-05-17 AFR477 CDG → PTY May 17, 03:45 UTCMay 17, 16:05 UTC12h 20m
2026-05-16 AFR468 CDG → CCS May 16, 12:05 UTCMay 17, 01:20 UTC13h 15m
2026-05-15 AFR191 BLR → CDG May 15, 21:10 UTCMay 16, 06:10 UTC9h 1m
2026-05-15 AFR191 BLR → CDG May 15, 20:20 UTCMay 15, 20:30 UTC10m
2026-05-15 AFR194 CDG → BLR May 15, 08:35 UTCMay 15, 17:50 UTC9h 14m
2026-05-14 AFR477 CDG → PTY May 14, 03:45 UTCMay 14, 15:50 UTC12h 5m
2026-05-13 AFR468 CDG → CCS May 13, 11:50 UTCMay 14, 00:55 UTC13h 5m
2026-05-13 AFR551 CAI → CDG May 13, 01:40 UTCMay 13, 05:50 UTC4h 10m
2026-05-12 AFR570 CDG → CAI May 12, 20:01 UTCMay 12, 23:30 UTC3h 30m
2026-05-12 AFR093 MIA → CDG May 12, 03:45 UTCMay 12, 11:40 UTC7h 55m
2026-05-11 AFR092 CDG → MIA May 11, 16:30 UTCMay 11, 17:45 UTC1h 15m
2026-05-10 AFR431 SJO → CDG May 10, 22:05 UTCMay 11, 11:55 UTC13h 50m
2026-05-10 AFR431 SJO → CDG May 10, 13:19 UTCMay 11, 11:55 UTC22h 35m
2026-05-10 AFR431 SJO → CDG May 10, 12:59 UTCMay 11, 11:15 UTC22h 15m
2026-05-10 AFR53M IAD → CDG May 10, 01:55 UTCMay 10, 09:00 UTC7h 5m
2026-05-09 AFR52X CDG → IAD May 9, 15:30 UTCMay 9, 23:09 UTC7h 40m
2026-05-09 AFR431 SJO → CDG May 9, 01:35 UTCMay 9, 11:35 UTC10h 0m
2026-05-08 AFR430 CDG → SJO May 8, 12:04 UTCMay 8, 22:05 UTC10h 0m
2026-05-07 AFR477 CDG → PTY May 7, 05:30 UTCMay 7, 17:35 UTC12h 5m
2026-05-06 AFR468 CDG → CCS May 6, 11:55 UTCMay 7, 01:10 UTC13h 15m
2026-05-05 AFR191 BLR → CDG May 5, 22:15 UTCMay 6, 06:30 UTC8h 15m
2026-05-05 AFR191 BLR → CDG May 5, 20:25 UTCMay 5, 20:35 UTC10m
2026-05-05 AFR194 CDG → BLR May 5, 17:35 UTCMay 5, 17:55 UTC20m
2026-05-05 AFR194 CDG → BLR May 5, 08:50 UTCMay 5, 16:20 UTC7h 30m
2026-05-04 AFR249 CDG → CMN May 4, 13:40 UTCMay 4, 17:00 UTC3h 20m
2026-05-03 AFR248 CDG → MNL May 3, 21:35 UTCMay 4, 10:35 UTC13h 0m
2026-05-02 AFR435 MEX → CDG May 2, 22:15 UTCMay 3, 13:55 UTC15h 39m
2026-05-02 AFR435 MEX → CDG May 2, 15:20 UTCMay 3, 13:55 UTC22h 34m
2026-05-02 AFR436 CDG → BOG May 2, 14:30 UTCMay 3, 13:15 UTC22h 44m

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

Mode-S 39CF0D frequently asked

What is Mode-S code 39CF0D?
39CF0D is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTYN.
Where is Mode-S 39CF0D registered?
Mode-S code 39CF0D is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CF0D broadcasting right now?
Yes. Mode-S 39CF0D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CF0D, octal 16347415, decimal 3,788,557.
What flights does 39CF0D operate?
Mode-S 39CF0D has broadcast 20 distinct callsigns, including AFR477, AFR468, AFR407, AFR551, AFR435.