Apparatus

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sensors Mode-S transponder

39CDCE

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HTOO · AIRBUS A-350-1000

Hex
39CDCE
Octal
16346716
Decimal
3,788,238
Country
FR
Tail
F-HTOO
Type
A35K
No current signal · last broadcast Jul 26, 10:45 UTC
Flights observed
153
Distinct callsigns
12
Country
FR
Last broadcast
Jul 26, 10:45 UTC

Last known position

Most recent position reported by Mode-S 39CDCE.

Country allocation

The ICAO 24-bit address 39CDCE 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 12 distinct

Callsign Airline Flights Last seen
FWI41D Air Caraïbes 55 2026-07-18
FWI11B Air Caraïbes 26 2026-07-26
FWI10A Air Caraïbes 22 2026-07-25
FWI40J Air Caraïbes 19 2026-07-26
FWI17F Air Caraïbes 9 2026-07-20
FWI57Q - 5 2026-07-09
FWI46E Air Caraïbes 5 2026-07-19
FWI537 Air Caraïbes 4 2026-04-18
FWI538 Air Caraïbes 3 2026-06-13
FWI51W Air Caraïbes 3 2026-07-23
FWI5617 Air Caraïbes 1 2026-04-29
FWI42P Air Caraïbes 1 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FWI40J ORY → PTP Jul 26, 09:15 UTCJul 26, 10:45 UTC1h 30m
2026-07-26 FWI11B FDF → ORY Jul 26, 03:55 UTCJul 26, 05:25 UTC1h 30m
2026-07-25 FWI11B FDF → ORY Jul 25, 21:40 UTCJul 25, 21:55 UTC15m
2026-07-25 FWI10A ORY → FDF Jul 25, 18:20 UTCJul 25, 18:35 UTC15m
2026-07-25 FWI10A ORY → FDF Jul 25, 11:00 UTCJul 25, 12:10 UTC1h 10m
2026-07-25 FWI11B FDF → ORY Jul 25, 03:55 UTCJul 25, 05:45 UTC1h 50m
2026-07-24 FWI11B FDF → ORY Jul 24, 22:10 UTCJul 24, 22:20 UTC10m
2026-07-24 FWI10A ORY → FDF Jul 24, 18:10 UTCJul 24, 18:30 UTC20m
2026-07-24 FWI10A ORY → FDF Jul 24, 10:45 UTCJul 24, 11:45 UTC1h 0m
2026-07-23 FWI51W CAY → ORY Jul 23, 11:35 UTCJul 24, 06:35 UTC19h 0m
2026-07-22 FWI51W CAY → ORY Jul 22, 12:10 UTCJul 23, 06:30 UTC18h 20m
2026-07-21 FWI42P ORY → PTP Jul 21, 11:50 UTCJul 22, 05:25 UTC17h 35m
2026-07-20 FWI17F FDF → ORY Jul 20, 09:35 UTCJul 21, 04:10 UTC18h 34m
2026-07-20 FWI17F FDF → ORY Jul 20, 08:40 UTCJul 21, 04:10 UTC19h 29m
2026-07-20 FWI17F FDF → ORY Jul 20, 03:25 UTCJul 20, 04:50 UTC1h 25m
2026-07-19 FWI46E ORY → FDF Jul 19, 08:45 UTCJul 19, 09:50 UTC1h 5m
2026-07-19 FWI17F - Jul 19, 02:50 UTCJul 19, 04:15 UTC1h 25m
2026-07-18 FWI46E - Jul 18, 09:20 UTCJul 18, 10:40 UTC1h 20m
2026-07-18 FWI41D PTP → ORY Jul 18, 04:10 UTCJul 18, 05:35 UTC1h 25m
2026-07-17 FWI41D PTP → ORY Jul 17, 09:35 UTCJul 18, 05:35 UTC20h 1m
2026-07-16 FWI41D PTP → ORY Jul 16, 10:15 UTCJul 17, 05:15 UTC19h 0m
2026-07-15 FWI51W - Jul 15, 11:35 UTCJul 16, 07:00 UTC19h 25m
2026-07-14 FWI41D - Jul 14, 04:50 UTCJul 14, 06:10 UTC1h 20m
2026-07-13 FWI40J - Jul 13, 09:25 UTCJul 13, 10:35 UTC1h 10m
2026-07-13 FWI17F - Jul 13, 02:15 UTCJul 13, 04:10 UTC1h 55m
2026-07-12 FWI46E - Jul 12, 09:20 UTCJul 12, 10:25 UTC1h 5m
2026-07-11 FWI41D - Jul 11, 09:35 UTCJul 12, 04:25 UTC18h 50m
2026-07-11 FWI11B - Jul 11, 03:55 UTCJul 11, 05:15 UTC1h 20m
2026-07-10 FWI10A - Jul 10, 10:45 UTCJul 10, 12:10 UTC1h 25m
2026-07-09 FWI57Q ORY → ORY Jul 9, 11:50 UTCJul 10, 06:45 UTC18h 55m
2026-07-08 FWI57Q - Jul 8, 12:35 UTCJul 9, 07:05 UTC18h 30m
2026-07-07 FWI17F ORY → ORY Jul 7, 09:25 UTCJul 8, 04:30 UTC19h 5m
2026-07-07 FWI17F - Jul 7, 03:40 UTCJul 7, 05:40 UTC2h 0m
2026-07-06 FWI17F ORY → ORY Jul 6, 09:45 UTCJul 7, 05:40 UTC19h 55m
2026-07-05 FWI41D ORY → ORY Jul 5, 09:35 UTCJul 6, 04:35 UTC19h 0m
2026-07-04 FWI41D - Jul 4, 09:35 UTCJul 5, 05:25 UTC19h 50m
2026-07-03 FWI40J ORY → ORY Jul 3, 11:05 UTCJul 4, 05:25 UTC18h 20m
2026-07-02 FWI11B - Jul 2, 13:35 UTCJul 3, 07:40 UTC18h 5m
2026-07-02 FWI10A - Jul 2, 12:45 UTCJul 3, 07:40 UTC18h 55m
2026-06-29 FWI41D - Jun 29, 09:34 UTCJun 30, 04:15 UTC18h 41m
2026-06-29 FWI40J ORY → ORY Jun 29, 09:25 UTCJun 30, 04:15 UTC18h 51m
2026-06-28 FWI41D - Jun 28, 09:34 UTCJun 29, 04:04 UTC18h 30m
2026-06-28 FWI40J ORY → ORY Jun 28, 09:25 UTCJun 29, 04:04 UTC18h 40m
2026-06-27 FWI17F - Jun 27, 09:34 UTCJun 28, 05:09 UTC19h 35m
2026-06-27 FWI46E ORY → ORY Jun 27, 09:04 UTCJun 28, 05:09 UTC20h 5m
2026-06-26 FWI41D - Jun 26, 09:35 UTCJun 27, 05:29 UTC19h 55m
2026-06-25 FWI11B - Jun 25, 11:35 UTCJun 26, 05:39 UTC18h 5m
2026-06-25 FWI11B ORY → ORY Jun 25, 10:55 UTCJun 26, 05:39 UTC18h 45m
2026-06-24 FWI41D ORY → ORY Jun 24, 10:35 UTCJun 25, 04:45 UTC18h 10m
2026-06-23 FWI41D - Jun 23, 09:34 UTCJun 24, 04:24 UTC18h 50m

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

Mode-S 39CDCE frequently asked

What is Mode-S code 39CDCE?
39CDCE is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTOO.
Where is Mode-S 39CDCE registered?
Mode-S code 39CDCE is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CDCE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 10:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CDCE, octal 16346716, decimal 3,788,238.
What flights does 39CDCE operate?
Mode-S 39CDCE has broadcast 12 distinct callsigns, including FWI41D, FWI11B, FWI10A, FWI40J, FWI17F.