Apparatus

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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 1h ago
Flights observed
185
Distinct callsigns
20
Country
FR
Last broadcast
1h 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
AFR199 - 10 2026-06-28
AFR198 - 10 2026-06-27
AFR253 - 9 2026-07-02
AFR491 Air France 7 2026-05-28
AFR407 - 7 2026-07-04
AFR258 - 6 2026-07-02
AFR194 Air France 6 2026-05-01
AFR191 Air France 6 2026-05-02
AFR097 - 6 2026-06-27
AFR096 - 6 2026-06-26
AFR436 - 4 2026-07-13
AFR406 - 4 2026-07-03
AFR267 - 4 2026-04-13
AFR248 Air France 4 2026-04-18
AFR174 Air France 4 2026-05-31
AFR82M Air France 3 2026-06-13
AFR52X - 3 2026-07-12
AFR490 Air France 3 2026-05-28
AFR435 - 3 2026-07-10
AFR431 Air France 3 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFR436 - Jul 13, 14:45 UTCJul 14, 00:45 UTC10h 0m
2026-07-13 AFR53X - Jul 13, 01:55 UTCJul 13, 09:00 UTC7h 5m
2026-07-12 AFR52X - Jul 12, 15:20 UTCJul 12, 22:50 UTC7h 30m
2026-07-12 AFR4081 YUL → CDG Jul 12, 01:30 UTCJul 12, 07:45 UTC6h 15m
2026-07-10 AFR348F - Jul 10, 16:50 UTCJul 10, 23:50 UTC7h 0m
2026-07-10 AFR435 BOG → CDG Jul 10, 04:05 UTCJul 10, 13:50 UTC9h 45m
2026-07-10 AFR436 - Jul 10, 01:30 UTCJul 10, 01:45 UTC15m
2026-07-09 AFR436 - Jul 9, 15:40 UTCJul 10, 00:35 UTC8h 55m
2026-07-09 AFR179 MEX → CDG Jul 9, 02:00 UTCJul 9, 12:10 UTC10h 10m
2026-07-08 AFR178 - Jul 8, 11:35 UTCJul 8, 22:40 UTC11h 5m
2026-07-07 AFR415 - Jul 7, 12:20 UTCJul 8, 07:25 UTC19h 5m
2026-07-07 AFR415 - Jul 7, 12:05 UTCJul 8, 07:25 UTC19h 20m
2026-07-06 AFR511 - Jul 6, 22:00 UTCJul 7, 08:30 UTC10h 30m
2026-07-06 AFR512 - Jul 6, 08:55 UTCJul 6, 19:35 UTC10h 40m
2026-07-04 AFR407 - Jul 4, 17:15 UTCJul 5, 03:35 UTC10h 20m
2026-07-04 AFR407 - Jul 4, 14:25 UTCJul 4, 14:35 UTC10m
2026-07-03 AFR406 - Jul 3, 21:35 UTCJul 4, 00:40 UTC3h 5m
2026-07-02 AFR253 - Jul 2, 21:00 UTCJul 3, 16:10 UTC19h 10m
2026-07-02 AFR253 - Jul 2, 19:25 UTCJul 3, 16:10 UTC20h 45m
2026-07-02 AFR253 - Jul 2, 16:20 UTCJul 3, 16:10 UTC23h 50m
2026-07-02 AFR258 - Jul 2, 14:20 UTCJul 3, 14:15 UTC23h 55m
2026-07-02 AFR258 - Jul 2, 12:35 UTCJul 3, 12:15 UTC23h 40m
2026-07-01 AFR333F BOS → CDG Jul 1, 23:25 UTCJul 2, 05:35 UTC6h 10m
2026-07-01 AFR334M - Jul 1, 13:30 UTCJul 1, 20:35 UTC7h 5m
2026-07-01 AFR935 - Jul 1, 07:10 UTCJul 1, 10:15 UTC3h 5m
2026-06-30 AFR935 - Jun 30, 11:10 UTCJul 1, 10:15 UTC23h 5m
2026-06-29 AFR337P SEA → CDG Jun 29, 20:54 UTCJun 30, 06:05 UTC9h 11m
2026-06-29 AFR338 CDG → SEA Jun 29, 08:44 UTCJun 29, 17:55 UTC9h 10m
2026-06-28 AFR199 - Jun 28, 07:40 UTCJun 28, 20:09 UTC12h 30m
2026-06-27 AFR198 - Jun 27, 15:34 UTCJun 28, 04:59 UTC13h 25m
2026-06-27 AFR097 MCO → CDG Jun 27, 02:59 UTCJun 27, 10:54 UTC7h 55m
2026-06-26 AFR096 - Jun 26, 15:20 UTCJun 27, 00:20 UTC9h 0m
2026-06-25 AFR75K RDU → CDG Jun 25, 23:05 UTCJun 26, 06:09 UTC7h 5m
2026-06-25 AFR074 - Jun 25, 12:04 UTCJun 25, 20:25 UTC8h 20m
2026-06-24 AFR740 PTP → CDG Jun 24, 13:40 UTCJun 25, 06:44 UTC17h 5m
2026-06-23 AFR375G - Jun 23, 20:34 UTCJun 24, 05:40 UTC9h 5m
2026-06-23 AFR374F CDG → YVR Jun 23, 08:59 UTCJun 23, 18:14 UTC9h 15m
2026-06-22 AFR685 CDG → ATL Jun 22, 23:50 UTCJun 23, 03:54 UTC4h 5m
2026-06-22 AFR684 CDG → RUH Jun 22, 12:15 UTCJun 22, 21:59 UTC9h 45m
2026-06-21 AFR407 - Jun 21, 17:10 UTCJun 22, 03:50 UTC10h 40m
2026-06-21 AFR407 - Jun 21, 14:19 UTCJun 21, 14:30 UTC10m
2026-06-20 AFR406 - Jun 20, 21:34 UTCJun 21, 08:20 UTC10h 45m
2026-06-20 AFR199 - Jun 20, 04:54 UTCJun 20, 17:14 UTC12h 20m
2026-06-19 AFR198 - Jun 19, 15:39 UTCJun 20, 02:29 UTC10h 50m
2026-06-19 AFR435 - Jun 19, 11:20 UTCJun 19, 12:44 UTC1h 25m
2026-06-19 AFR435 - Jun 19, 02:59 UTCJun 19, 03:15 UTC15m
2026-06-18 AFR436 - Jun 18, 14:15 UTCJun 19, 00:24 UTC10h 9m
2026-06-16 AFR253 - Jun 16, 20:20 UTCJun 17, 15:25 UTC19h 5m
2026-06-16 AFR253 - Jun 16, 18:39 UTCJun 17, 15:25 UTC20h 46m
2026-06-16 AFR253 - Jun 16, 16:20 UTCJun 17, 15:25 UTC23h 6m

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 1h 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 AFR199, AFR198, AFR253, AFR491, AFR407.