Apparatus

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sensors Mode-S transponder

399C15

ICAO 24-bit transponder address · allocated to France

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

Hex
399C15
Octal
16316025
Decimal
3,775,509
Country
FR
Tail
F-HHAV
Type
A359
No current signal · last broadcast 5h ago
Flights observed
78
Distinct callsigns
12
Country
FR
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 399C15.

Country allocation

The ICAO 24-bit address 399C15 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
FWI67Z Air Caraïbes 22 2026-05-20
FWI648 Air Caraïbes 12 2026-05-29
FWI649 Air Caraïbes 10 2026-05-25
FWI64Y Air Caraïbes 8 2026-05-20
FWI11B Air Caraïbes 8 2026-05-19
FWI60T Air Caraïbes 6 2026-05-21
FWI51W Air Caraïbes 5 2026-05-26
FWI57Q Air Caraïbes 3 2026-05-17
FWI71K Air Caraïbes 1 2026-04-24
FWI10A Air Caraïbes 1 2026-04-25
FBU76W - 1 2026-05-28
FBU47G - 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 FWI648 ORY → CUN May 29, 10:00 UTCMay 29, 20:05 UTC10h 5m
2026-05-28 FBU76W - May 28, 03:05 UTCMay 28, 13:25 UTC10h 20m
2026-05-27 FBU47G ORY → LAX May 27, 13:10 UTCMay 28, 00:15 UTC11h 5m
2026-05-26 FWI51W CAY → ORY May 26, 12:10 UTCMay 27, 07:10 UTC19h 0m
2026-05-25 FWI649 CUN → ORY May 25, 23:00 UTCMay 26, 08:34 UTC9h 35m
2026-05-25 FWI648 ORY → CUN May 25, 10:00 UTCMay 25, 19:44 UTC9h 44m
2026-05-23 FWI649 CUN → ORY May 23, 23:10 UTCMay 24, 08:15 UTC9h 5m
2026-05-23 FWI648 ORY → CUN May 23, 09:50 UTCMay 23, 20:05 UTC10h 15m
2026-05-21 FWI60T SDQ → ORY May 21, 15:40 UTCMay 22, 07:40 UTC16h 0m
2026-05-21 FWI60T SDQ → ORY May 21, 09:20 UTCMay 22, 07:40 UTC22h 20m
2026-05-21 FWI60T SDQ → ORY May 21, 09:00 UTCMay 22, 07:15 UTC22h 15m
2026-05-20 FWI67Z PUJ → ORY May 20, 11:20 UTCMay 21, 06:00 UTC18h 40m
2026-05-20 FWI64Y ORY → PUJ May 20, 10:10 UTCMay 21, 06:00 UTC19h 50m
2026-05-19 FWI11B FDF → ORY May 19, 11:20 UTCMay 20, 05:55 UTC18h 36m
2026-05-19 FWI11B FDF → ORY May 19, 11:00 UTCMay 20, 05:55 UTC18h 56m
2026-05-18 FWI649 CUN → ORY May 18, 23:05 UTCMay 19, 08:10 UTC9h 5m
2026-05-18 FWI648 ORY → CUN May 18, 10:00 UTCMay 18, 19:55 UTC9h 54m
2026-05-17 FWI57Q ORY → CAY May 17, 11:55 UTCMay 18, 06:35 UTC18h 40m
2026-05-16 FWI67Z PUJ → ORY May 16, 22:35 UTCMay 17, 05:55 UTC7h 20m
2026-05-16 FWI64Y ORY → PUJ May 16, 10:20 UTCMay 16, 18:35 UTC8h 15m
2026-05-15 FWI67Z PUJ → ORY May 15, 11:20 UTCMay 16, 05:51 UTC18h 30m
2026-05-15 FWI64Y ORY → PUJ May 15, 10:10 UTCMay 16, 05:51 UTC19h 40m
2026-05-14 FWI51W CAY → ORY May 14, 11:20 UTCMay 15, 06:55 UTC19h 35m
2026-05-13 FWI64Y ORY → PUJ May 13, 11:50 UTCMay 14, 06:55 UTC19h 5m
2026-05-12 FWI11B FDF → ORY May 12, 11:20 UTCMay 13, 05:35 UTC18h 15m
2026-05-12 FWI11B FDF → ORY May 12, 10:55 UTCMay 13, 05:35 UTC18h 40m
2026-05-11 FWI51W CAY → ORY May 11, 06:40 UTCMay 11, 08:40 UTC2h 0m
2026-05-10 FWI51W CAY → ORY May 10, 11:25 UTCMay 11, 08:40 UTC21h 15m
2026-05-09 FWI649 CUN → ORY May 9, 18:15 UTCMay 10, 08:35 UTC14h 20m
2026-05-09 FWI648 ORY → CUN May 9, 09:40 UTCMay 10, 08:35 UTC22h 55m
2026-05-08 FWI67Z PUJ → ORY May 8, 22:30 UTCMay 9, 06:25 UTC7h 55m
2026-05-08 FWI64Y ORY → PUJ May 8, 10:09 UTCMay 8, 11:19 UTC1h 10m
2026-05-06 FWI649 CUN → ORY May 6, 15:25 UTCMay 7, 08:25 UTC17h 0m
2026-05-06 FWI649 CUN → ORY May 6, 11:20 UTCMay 7, 08:25 UTC21h 5m
2026-05-06 FWI648 ORY → CUN May 6, 10:10 UTCMay 7, 08:25 UTC22h 15m
2026-05-05 FWI57Q ORY → CAY May 5, 11:45 UTCMay 6, 07:10 UTC19h 25m
2026-05-05 FWI649 CUN → ORY May 5, 00:25 UTCMay 5, 08:55 UTC8h 30m
2026-05-04 FWI648 ORY → CUN May 4, 21:00 UTCMay 4, 21:10 UTC10m
2026-05-04 FWI648 ORY → CUN May 4, 10:25 UTCMay 4, 20:15 UTC9h 51m
2026-05-03 FWI67Z PUJ → ORY May 3, 22:34 UTCMay 4, 06:25 UTC7h 50m
2026-05-03 FWI67Z PUJ → ORY May 3, 10:05 UTCMay 4, 06:25 UTC20h 20m
2026-05-02 FWI67Z PUJ → ORY May 2, 11:20 UTCMay 3, 06:10 UTC18h 49m
2026-05-02 FWI67Z PUJ → ORY May 2, 10:15 UTCMay 3, 06:10 UTC19h 54m
2026-05-01 FWI67Z PUJ → ORY May 1, 11:20 UTCMay 2, 06:00 UTC18h 40m
2026-05-01 FWI67Z PUJ → ORY May 1, 10:15 UTCMay 2, 06:00 UTC19h 45m
2026-05-01 FWI60T SDQ → ORY May 1, 05:45 UTCMay 1, 07:20 UTC1h 35m
2026-04-30 FWI60T SDQ → ORY Apr 30, 09:20 UTCMay 1, 07:20 UTC22h 0m
2026-04-30 FWI60T SDQ → ORY Apr 30, 09:05 UTCMay 1, 07:15 UTC22h 10m
2026-04-29 FWI11B FDF → ORY Apr 29, 11:20 UTCApr 30, 06:15 UTC18h 54m
2026-04-29 FWI11B FDF → ORY Apr 29, 11:10 UTCApr 30, 06:15 UTC19h 4m

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

Mode-S 399C15 frequently asked

What is Mode-S code 399C15?
399C15 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HHAV.
Where is Mode-S 399C15 registered?
Mode-S code 399C15 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 399C15 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 399C15, octal 16316025, decimal 3,775,509.
What flights does 399C15 operate?
Mode-S 399C15 has broadcast 12 distinct callsigns, including FWI67Z, FWI648, FWI649, FWI64Y, FWI11B.