Apparatus

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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
No current signal · last broadcast 12h ago
Flights observed
194
Distinct callsigns
20
Country
FR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 39CF0D.

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
AFR407 - 15 2026-07-07
AFR435 - 13 2026-07-11
AFR477 Air France 10 2026-05-20
AFR468 Air France 10 2026-05-19
AFR436 - 10 2026-07-10
AFR406 - 9 2026-07-13
AFR551 Air France 7 2026-05-13
AFR253 Air France 6 2026-04-15
AFR258 Air France 5 2026-04-14
AFR191 Air France 5 2026-05-26
AFR179 - 5 2026-07-13
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
AFR178 - 4 2026-06-29
AFR174 - 4 2026-07-12
AFR52X - 3 2026-06-22
AFR491 - 3 2026-07-02
AFR338 - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFR406 - Jul 13, 21:35 UTCJul 13, 22:35 UTC1h 0m
2026-07-13 AFR179 - Jul 13, 04:05 UTCJul 13, 14:35 UTC10h 30m
2026-07-12 AFR174 - Jul 12, 14:20 UTCJul 13, 01:10 UTC10h 50m
2026-07-11 AFR578 - Jul 11, 16:05 UTCJul 12, 05:55 UTC13h 50m
2026-07-11 AFR435 - Jul 11, 11:10 UTCJul 11, 12:40 UTC1h 30m
2026-07-10 AFR436 - Jul 10, 23:50 UTCJul 11, 00:10 UTC20m
2026-07-10 AFR436 - Jul 10, 14:10 UTCJul 10, 23:05 UTC8h 55m
2026-07-09 AFR511 - Jul 9, 22:20 UTCJul 10, 08:35 UTC10h 15m
2026-07-09 AFR512 - Jul 9, 19:35 UTCJul 9, 19:55 UTC20m
2026-07-09 AFR512 - Jul 9, 08:55 UTCJul 9, 18:00 UTC9h 5m
2026-07-08 AFR375G - Jul 8, 20:40 UTCJul 9, 05:40 UTC9h 0m
2026-07-08 AFR374F - Jul 8, 09:00 UTCJul 8, 18:10 UTC9h 10m
2026-07-07 AFR407 - Jul 7, 17:20 UTCJul 8, 03:45 UTC10h 25m
2026-07-07 AFR407 - Jul 7, 14:35 UTCJul 7, 14:40 UTC5m
2026-07-06 AFR406 - Jul 6, 21:40 UTCJul 7, 00:40 UTC3h 0m
2026-07-06 AFR173 - Jul 6, 06:00 UTCJul 6, 16:10 UTC10h 10m
2026-07-05 AFR174 - Jul 5, 16:15 UTCJul 6, 03:20 UTC11h 5m
2026-07-05 AFR435 - Jul 5, 04:10 UTCJul 5, 13:00 UTC8h 50m
2026-07-04 AFR435 - Jul 4, 14:05 UTCJul 5, 13:00 UTC22h 55m
2026-07-04 AFR349 YUL → CDG Jul 4, 03:50 UTCJul 4, 09:50 UTC6h 0m
2026-07-03 AFR348F - Jul 3, 17:30 UTCJul 3, 23:40 UTC6h 10m
2026-07-03 AFR348F - Jul 3, 16:40 UTCJul 3, 17:25 UTC45m
2026-07-02 AFR491 - Jul 2, 22:50 UTCJul 3, 13:25 UTC14h 35m
2026-07-02 AFR491 - Jul 2, 15:20 UTCJul 3, 13:25 UTC22h 5m
2026-07-02 AFR491 - Jul 2, 15:10 UTCJul 3, 13:15 UTC22h 5m
2026-07-01 AFR685 CDG → ATL Jul 1, 21:45 UTCJul 2, 11:55 UTC14h 10m
2026-07-01 AFR199 - Jul 1, 08:40 UTCJul 1, 18:15 UTC9h 35m
2026-07-01 AFR199 - Jul 1, 06:00 UTCJul 1, 06:55 UTC55m
2026-06-30 AFR198 - Jun 30, 15:45 UTCJul 1, 03:40 UTC11h 55m
2026-06-30 AFR179 - Jun 30, 02:25 UTCJun 30, 12:30 UTC10h 5m
2026-06-29 AFR178 - Jun 29, 12:05 UTCJun 29, 23:09 UTC11h 5m
2026-06-28 AFR337P SEA → CDG Jun 28, 20:59 UTCJun 29, 06:19 UTC9h 20m
2026-06-28 AFR338 - Jun 28, 09:10 UTCJun 28, 18:05 UTC8h 55m
2026-06-27 AFR199 - Jun 27, 05:49 UTCJun 27, 17:29 UTC11h 40m
2026-06-26 AFR198 - Jun 26, 15:25 UTCJun 27, 03:15 UTC11h 50m
2026-06-26 AFR179 - Jun 26, 01:54 UTCJun 26, 11:49 UTC9h 55m
2026-06-25 AFR178 - Jun 25, 12:19 UTCJun 25, 23:14 UTC10h 55m
2026-06-25 AFR331E - Jun 25, 07:15 UTCJun 25, 08:09 UTC55m
2026-06-25 AFR331E - Jun 25, 02:10 UTCJun 25, 07:09 UTC5h 0m
2026-06-24 AFR332 - Jun 24, 16:09 UTCJun 24, 23:20 UTC7h 10m
2026-06-23 AFR435 - Jun 23, 22:29 UTCJun 24, 13:20 UTC14h 50m
2026-06-23 AFR436 - Jun 23, 14:39 UTCJun 24, 13:14 UTC22h 35m
2026-06-23 AFR53X IAD → CDG Jun 23, 02:15 UTCJun 23, 09:05 UTC6h 50m
2026-06-22 AFR52X - Jun 22, 15:40 UTCJun 22, 23:35 UTC7h 55m
2026-06-22 AFR435 - Jun 22, 03:54 UTCJun 22, 12:40 UTC8h 45m
2026-06-21 AFR436 - Jun 21, 14:10 UTCJun 21, 15:44 UTC1h 35m
2026-06-21 AFR097 - Jun 21, 03:14 UTCJun 21, 10:54 UTC7h 40m
2026-06-20 AFR096 CDG → MCO Jun 20, 15:24 UTCJun 21, 00:29 UTC9h 5m
2026-06-20 AFR179 - Jun 20, 01:44 UTCJun 20, 11:49 UTC10h 5m
2026-06-19 AFR178 - Jun 19, 11:45 UTCJun 19, 22:55 UTC11h 10m

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?
No active broadcast right now. Last signal was 12h ago.
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 AFR407, AFR435, AFR477, AFR468, AFR436.