sensors Mode-S transponder

39CF11

ICAO 24-bit transponder address · allocated to France

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

Hex
39CF11
Octal
16347421
Decimal
3,788,561
Country
FR
Tail
F-HTYR
Type
A359
No current signal · last broadcast 2h ago
Flights observed
101
Distinct callsigns
20
Country
FR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 39CF11.

Country allocation

The ICAO 24-bit address 39CF11 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
AFR491 Air France 7 2026-05-28
AFR199 Air France 7 2026-05-20
AFR198 Air France 7 2026-05-19
AFR194 Air France 6 2026-05-01
AFR191 Air France 6 2026-05-02
AFR267 - 4 2026-04-13
AFR248 Air France 4 2026-04-18
AFR097 Air France 4 2026-05-17
AFR096 Air France 4 2026-05-16
AFR490 Air France 3 2026-05-28
AFR431 Air France 3 2026-04-16
AFR430 Air France 3 2026-04-15
AFR253 Air France 3 2026-05-02
AFR174 Air France 3 2026-05-10
AFR570 Air France 2 2026-05-03
AFR551 Air France 2 2026-05-04
AFR258 Air France 2 2026-05-02
AFR173 Air France 2 2026-05-11
AFR11E Air France 2 2026-05-14
AFR093 Air France 2 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFR332 CDG → BOS May 29, 15:55 UTCMay 29, 22:45 UTC6h 50m
2026-05-28 AFR491 CDG → PUJ May 28, 22:35 UTCMay 29, 12:40 UTC14h 5m
2026-05-28 AFR490 CDG → PTY May 28, 14:25 UTCMay 29, 12:40 UTC22h 15m
2026-05-28 AFR57J LAS → CDG May 28, 01:00 UTCMay 28, 10:55 UTC9h 55m
2026-05-27 AFR56T CDG → LAS May 27, 12:20 UTCMay 27, 22:45 UTC10h 25m
2026-05-25 AFR477 CDG → PTY May 25, 03:45 UTCMay 25, 15:40 UTC11h 55m
2026-05-24 AFR468 CDG → CCS May 24, 11:50 UTCMay 24, 23:46 UTC11h 56m
2026-05-23 AFR407 SCL → CDG May 23, 17:35 UTCMay 24, 03:50 UTC10h 15m
2026-05-22 AFR406 CDG → SCL May 22, 21:40 UTCMay 23, 08:25 UTC10h 44m
2026-05-22 AFR287 HND → CDG May 22, 03:15 UTCMay 22, 17:00 UTC13h 45m
2026-05-21 AFR286 CDG → HND May 21, 11:30 UTCMay 22, 00:20 UTC12h 50m
2026-05-20 AFR199 BKK → CDG May 20, 05:25 UTCMay 20, 17:15 UTC11h 50m
2026-05-19 AFR198 CDG → BKK May 19, 16:10 UTCMay 19, 18:50 UTC2h 40m
2026-05-18 AFR491 CDG → PUJ May 18, 19:25 UTCMay 19, 12:25 UTC17h 0m
2026-05-18 AFR491 CDG → PUJ May 18, 14:20 UTCMay 19, 12:25 UTC22h 4m
2026-05-18 AFR490 CDG → PTY May 18, 14:05 UTCMay 19, 12:15 UTC22h 9m
2026-05-18 AFR35T ATL → CDG May 18, 03:01 UTCMay 18, 10:40 UTC7h 40m
2026-05-17 AFR34N CDG → ATL May 17, 15:25 UTCMay 18, 00:05 UTC8h 40m
2026-05-17 AFR097 MCO → CDG May 17, 03:00 UTCMay 17, 10:55 UTC7h 55m
2026-05-16 AFR096 CDG → MCO May 16, 15:01 UTCMay 17, 00:15 UTC9h 15m
2026-05-15 AFR097 MCO → CDG May 15, 02:55 UTCMay 15, 10:50 UTC7h 55m
2026-05-14 AFR096 CDG → MCO May 14, 15:10 UTCMay 15, 00:20 UTC9h 10m
2026-05-14 AFR11E JFK → CDG May 14, 05:35 UTCMay 14, 12:10 UTC6h 35m
2026-05-13 AFR012 CDG → JFK May 13, 18:50 UTCMay 14, 02:10 UTC7h 20m
2026-05-13 AFR081 SFO → CDG May 13, 03:30 UTCMay 13, 13:20 UTC9h 50m
2026-05-12 AFR82M CDG → SFO May 12, 14:00 UTCMay 13, 01:00 UTC11h 0m
2026-05-11 AFR173 MEX → CDG May 11, 04:40 UTCMay 11, 14:25 UTC9h 45m
2026-05-10 AFR174 CDG → MEX May 10, 23:35 UTCMay 11, 02:00 UTC2h 25m
2026-05-10 AFR174 CDG → MEX May 10, 14:25 UTCMay 10, 23:29 UTC9h 5m
2026-05-10 AFR097 MCO → CDG May 10, 03:00 UTCMay 10, 11:20 UTC8h 20m
2026-05-09 AFR096 CDG → MCO May 9, 14:55 UTCMay 10, 00:05 UTC9h 10m
2026-05-09 AFR093 MIA → CDG May 9, 03:35 UTCMay 9, 11:45 UTC8h 10m
2026-05-08 AFR092 CDG → MIA May 8, 15:20 UTCMay 9, 00:45 UTC9h 25m
2026-05-08 AFR11E JFK → CDG May 8, 05:20 UTCMay 8, 11:49 UTC6h 30m
2026-05-07 AFR012 CDG → JFK May 7, 18:55 UTCMay 8, 02:24 UTC7h 29m
2026-05-07 AFR173 MEX → CDG May 7, 04:40 UTCMay 7, 14:20 UTC9h 40m
2026-05-06 AFR174 CDG → MEX May 6, 14:25 UTCMay 7, 01:55 UTC11h 29m
2026-05-05 AFR706 ABJ → DSS May 5, 16:45 UTCMay 6, 08:01 UTC15h 15m
2026-05-05 AFR097 MCO → CDG May 5, 03:05 UTCMay 5, 11:05 UTC8h 0m
2026-05-04 AFR096 CDG → MCO May 4, 15:15 UTCMay 5, 00:20 UTC9h 6m
2026-05-04 AFR551 CAI → CDG May 4, 01:55 UTCMay 4, 06:00 UTC4h 5m
2026-05-03 AFR570 CDG → CAI May 3, 19:30 UTCMay 3, 23:00 UTC3h 30m
2026-05-02 AFR253 SGN → CDG May 2, 20:20 UTCMay 3, 15:30 UTC19h 9m
2026-05-02 AFR253 SGN → CDG May 2, 19:20 UTCMay 3, 15:30 UTC20h 9m
2026-05-02 AFR253 SGN → CDG May 2, 16:20 UTCMay 3, 15:30 UTC23h 9m
2026-05-02 AFR258 CDG → SGN May 2, 14:20 UTCMay 3, 14:15 UTC23h 54m
2026-05-02 AFR258 CDG → SGN May 2, 12:45 UTCMay 3, 12:10 UTC23h 24m
2026-05-02 AFR191 BLR → CDG May 2, 00:55 UTCMay 2, 09:05 UTC8h 10m
2026-05-01 AFR191 BLR → CDG May 1, 23:10 UTCMay 1, 23:20 UTC10m
2026-05-01 AFR194 CDG → BLR May 1, 08:50 UTCMay 1, 17:50 UTC9h 0m

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

Mode-S 39CF11 frequently asked

What is Mode-S code 39CF11?
39CF11 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTYR.
Where is Mode-S 39CF11 registered?
Mode-S code 39CF11 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CF11 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CF11, octal 16347421, decimal 3,788,561.
What flights does 39CF11 operate?
Mode-S 39CF11 has broadcast 20 distinct callsigns, including AFR491, AFR199, AFR198, AFR194, AFR191.