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 2h ago
Flights observed
125
Distinct callsigns
20
Country
FR
Last broadcast
2h 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 20 distinct

Callsign Airline Flights Last seen
FWI67Z Air Caraïbes 28 2026-07-04
FWI64Y - 12 2026-06-17
FWI648 Air Caraïbes 12 2026-05-29
FWI649 Air Caraïbes 11 2026-05-31
FWI51W - 10 2026-07-08
FWI11B - 10 2026-06-30
FWI60T - 9 2026-07-09
FWI57Q - 9 2026-07-07
FWI10A - 5 2026-07-08
FWI17F - 3 2026-07-14
FWI23V - 2 2026-07-03
FBU95X - 2 2026-07-02
FBU89M - 2 2026-07-02
FWI71K Air Caraïbes 1 2026-04-24
FWI5607 - 1 2026-06-15
FWI46E - 1 2026-07-13
FBU98B - 1 2026-07-12
FBU92K - 1 2026-06-25
FBU76W - 1 2026-05-28
FBU72J - 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FWI17F - Jul 14, 03:05 UTCJul 14, 04:25 UTC1h 20m
2026-07-13 FWI46E - Jul 13, 08:35 UTCJul 13, 09:40 UTC1h 5m
2026-07-12 FBU98B - Jul 12, 03:40 UTCJul 12, 12:15 UTC8h 35m
2026-07-11 FBU24B ORY → MIA Jul 11, 15:45 UTCJul 12, 00:30 UTC8h 45m
2026-07-11 CAJ1661 - Jul 11, 03:01 UTCJul 11, 04:25 UTC1h 25m
2026-07-09 FWI60T - Jul 9, 10:25 UTCJul 10, 00:50 UTC14h 25m
2026-07-08 FWI10A ORY → ORY Jul 8, 11:30 UTCJul 9, 06:15 UTC18h 45m
2026-07-08 FWI51W - Jul 8, 04:30 UTCJul 8, 06:35 UTC2h 5m
2026-07-07 FWI57Q - Jul 7, 11:50 UTCJul 8, 04:15 UTC16h 25m
2026-07-05 FWI51W - Jul 5, 13:20 UTCJul 6, 07:20 UTC18h 0m
2026-07-05 FWI51W ORY → ORY Jul 5, 12:40 UTCJul 6, 07:20 UTC18h 40m
2026-07-04 FWI67Z PUJ → ORY Jul 4, 13:45 UTCJul 5, 09:05 UTC19h 20m
2026-07-03 FWI23V - Jul 3, 15:20 UTCJul 4, 09:40 UTC18h 20m
2026-07-03 FWI23V ORY → ORY Jul 3, 15:10 UTCJul 4, 09:40 UTC18h 30m
2026-07-02 FBU95X OAK → ORY Jul 2, 23:35 UTCJul 3, 09:30 UTC9h 55m
2026-07-02 FBU89M ORY → SFO Jul 2, 09:55 UTCJul 2, 20:45 UTC10h 50m
2026-06-30 FWI11B - Jun 30, 11:20 UTCJul 1, 05:55 UTC18h 35m
2026-06-30 FWI10A ORY → ORY Jun 30, 10:50 UTCJul 1, 05:55 UTC19h 5m
2026-06-28 FWI57Q ORY → ORY Jun 28, 11:50 UTCJun 29, 07:15 UTC19h 25m
2026-06-27 FWI57Q ORY → ORY Jun 27, 11:59 UTCJun 28, 07:05 UTC19h 5m
2026-06-26 FWI17F - Jun 26, 09:20 UTCJun 27, 04:09 UTC18h 50m
2026-06-26 FWI17F ORY → ORY Jun 26, 08:45 UTCJun 27, 04:09 UTC19h 25m
2026-06-25 FBU92K EWR → ORY Jun 25, 03:54 UTCJun 25, 10:20 UTC6h 25m
2026-06-24 FBU72J ORY → EWR Jun 24, 17:34 UTCJun 25, 01:19 UTC7h 45m
2026-06-23 FWI57Q ORY → ORY Jun 23, 11:54 UTCJun 24, 06:45 UTC18h 50m
2026-06-20 FWI67Z PUJ → ORY Jun 20, 11:20 UTCJun 21, 06:19 UTC19h 0m
2026-06-20 FWI67Z PUJ → ORY Jun 20, 10:20 UTCJun 21, 06:19 UTC20h 0m
2026-06-19 FWI51W ORY → ORY Jun 19, 12:25 UTCJun 20, 07:14 UTC18h 50m
2026-06-18 FBU95X SFO → ORY Jun 18, 23:25 UTCJun 19, 09:40 UTC10h 14m
2026-06-18 FBU89M ORY → SFO Jun 18, 09:50 UTCJun 18, 20:25 UTC10h 35m
2026-06-17 FWI67Z PUJ → ORY Jun 17, 11:20 UTCJun 18, 06:15 UTC18h 55m
2026-06-17 FWI64Y ORY → ORY Jun 17, 10:15 UTCJun 18, 06:15 UTC20h 0m
2026-06-16 FWI57Q ORY → ORY Jun 16, 11:35 UTCJun 17, 06:40 UTC19h 6m
2026-06-15 FWI5607 - Jun 15, 22:35 UTCJun 16, 06:15 UTC7h 40m
2026-06-13 FWI64Y ORY → PUJ Jun 13, 10:45 UTCJun 13, 18:55 UTC8h 10m
2026-06-12 FWI51W ORY → ORY Jun 12, 11:25 UTCJun 13, 06:45 UTC19h 19m
2026-06-12 FWI60T SDQ → ORY Jun 12, 05:15 UTCJun 12, 06:50 UTC1h 35m
2026-06-11 FWI60T SDQ → ORY Jun 11, 08:20 UTCJun 12, 06:50 UTC22h 31m
2026-06-09 FWI11B FDF → ORY Jun 9, 11:20 UTCJun 10, 05:30 UTC18h 10m
2026-06-09 FWI10A ORY → FDF Jun 9, 10:40 UTCJun 10, 05:30 UTC18h 50m
2026-06-06 FWI67Z PUJ → ORY Jun 6, 11:19 UTCJun 7, 05:40 UTC18h 20m
2026-06-06 FWI64Y ORY → PUJ Jun 6, 10:20 UTCJun 7, 05:40 UTC19h 20m
2026-06-04 FWI57Q ORY → CAY Jun 4, 14:25 UTCJun 5, 09:10 UTC18h 45m
2026-06-03 FWI67Z PUJ → ORY Jun 3, 11:20 UTCJun 4, 05:55 UTC18h 35m
2026-06-03 FWI64Y ORY → PUJ Jun 3, 10:20 UTCJun 4, 05:55 UTC19h 35m
2026-06-02 FWI10A ORY → FDF Jun 2, 12:25 UTCJun 3, 07:05 UTC18h 40m
2026-05-31 FWI649 CUN → ORY May 31, 00:00 UTCMay 31, 00:45 UTC45m
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

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 2h 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 20 distinct callsigns, including FWI67Z, FWI64Y, FWI648, FWI649, FWI51W.