Apparatus

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sensors Mode-S transponder

39D2B4

ICAO 24-bit transponder address · allocated to France

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

Hex
39D2B4
Octal
16351264
Decimal
3,789,492
Country
FR
Tail
F-HUVU
Type
A359
No current signal · last broadcast 1h ago
Flights observed
189
Distinct callsigns
20
Country
FR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 39D2B4.

Country allocation

The ICAO 24-bit address 39D2B4 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
AFR062 Air France 21 2026-06-08
AFR63J Air France 20 2026-06-08
AFR136 - 15 2026-06-28
AFR137T - 13 2026-06-29
AFR333F - 9 2026-06-21
AFR334M Air France 8 2026-06-21
AFR185 - 8 2026-07-12
AFR337P - 7 2026-05-30
AFR331E - 7 2026-06-20
AFR188 - 7 2026-07-12
AFR338 Air France 6 2026-05-30
AFR332 - 6 2026-06-19
AFR11E - 5 2026-06-24
AFR081 - 5 2026-07-06
AFR012 Air France 5 2026-06-23
AFR82M - 4 2026-07-05
AFR356G - 4 2026-06-25
AFR267 - 4 2026-07-11
AFR264 - 4 2026-07-10
AFR578 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR187 - Jul 14, 00:10 UTCJul 14, 13:00 UTC12h 50m
2026-07-13 AFR186 - Jul 13, 08:05 UTCJul 13, 20:20 UTC12h 15m
2026-07-12 AFR185 - Jul 12, 23:10 UTCJul 13, 03:55 UTC4h 45m
2026-07-12 AFR185 - Jul 12, 14:45 UTCJul 12, 15:05 UTC20m
2026-07-12 AFR188 - Jul 12, 08:20 UTCJul 12, 08:55 UTC35m
2026-07-11 AFR188 - Jul 11, 21:45 UTCJul 12, 01:40 UTC3h 55m
2026-07-11 AFR267 - Jul 11, 08:05 UTCJul 11, 16:10 UTC8h 5m
2026-07-11 AFR267 - Jul 11, 03:10 UTCJul 11, 03:25 UTC15m
2026-07-10 AFR264 - Jul 10, 23:45 UTCJul 11, 00:00 UTC15m
2026-07-10 AFR264 - Jul 10, 13:15 UTCJul 10, 22:50 UTC9h 35m
2026-07-09 AFR185 - Jul 9, 22:55 UTCJul 10, 03:55 UTC5h 0m
2026-07-09 AFR185 - Jul 9, 14:40 UTCJul 9, 15:00 UTC20m
2026-07-08 AFR188 - Jul 8, 22:00 UTCJul 9, 09:25 UTC11h 25m
2026-07-08 AFR287 HND → CDG Jul 8, 03:00 UTCJul 8, 16:50 UTC13h 50m
2026-07-07 AFR286 - Jul 7, 11:20 UTCJul 7, 23:40 UTC12h 20m
2026-07-06 AFR705 - Jul 6, 17:05 UTCJul 7, 08:20 UTC15h 15m
2026-07-06 AFR081 - Jul 6, 03:35 UTCJul 6, 13:30 UTC9h 55m
2026-07-05 AFR82M - Jul 5, 14:10 UTCJul 6, 01:10 UTC11h 0m
2026-07-05 AFR579 - Jul 5, 02:45 UTCJul 5, 07:35 UTC4h 50m
2026-07-04 AFR578 - Jul 4, 17:50 UTCJul 4, 23:00 UTC5h 10m
2026-07-03 AFR159X DFW → CDG Jul 3, 21:50 UTCJul 4, 06:40 UTC8h 50m
2026-07-03 AFR158M - Jul 3, 09:15 UTCJul 3, 19:15 UTC10h 0m
2026-07-02 AFR185 - Jul 2, 22:40 UTCJul 3, 03:25 UTC4h 45m
2026-07-02 AFR185 - Jul 2, 14:45 UTCJul 2, 15:00 UTC15m
2026-07-02 AFR188 - Jul 2, 08:55 UTCJul 2, 09:25 UTC30m
2026-07-01 AFR188 - Jul 1, 22:00 UTCJul 2, 02:10 UTC4h 10m
2026-07-01 AFR267 - Jul 1, 05:10 UTCJul 1, 16:50 UTC11h 40m
2026-07-01 AFR267 - Jul 1, 04:00 UTCJul 1, 04:15 UTC15m
2026-07-01 AFR264 - Jul 1, 00:55 UTCJul 1, 01:20 UTC25m
2026-06-30 AFR264 - Jun 30, 14:05 UTCJul 1, 00:10 UTC10h 5m
2026-06-30 AFR53X IAD → CDG Jun 30, 02:05 UTCJun 30, 08:55 UTC6h 50m
2026-06-29 AFR52X - Jun 29, 15:34 UTCJun 29, 23:14 UTC7h 40m
2026-06-29 AFR137T - Jun 29, 00:00 UTCJun 29, 07:15 UTC7h 15m
2026-06-28 AFR136 - Jun 28, 13:10 UTCJun 28, 21:14 UTC8h 5m
2026-06-27 AFR459 - Jun 27, 23:25 UTCJun 28, 10:04 UTC10h 40m
2026-06-27 AFR460 - Jun 27, 09:55 UTCJun 27, 20:55 UTC11h 0m
2026-06-26 AFR137T ORD → CDG Jun 26, 22:44 UTCJun 27, 06:05 UTC7h 20m
2026-06-26 AFR136 - Jun 26, 12:19 UTCJun 26, 20:24 UTC8h 5m
2026-06-26 AFR357E YYZ → CDG Jun 26, 00:30 UTCJun 26, 07:20 UTC6h 50m
2026-06-25 AFR356G - Jun 25, 14:39 UTCJun 25, 22:14 UTC7h 35m
2026-06-25 AFR097 - Jun 25, 03:40 UTCJun 25, 11:19 UTC7h 40m
2026-06-24 AFR096 - Jun 24, 15:24 UTCJun 25, 00:35 UTC9h 10m
2026-06-24 AFR11E - Jun 24, 05:34 UTCJun 24, 11:50 UTC6h 15m
2026-06-23 AFR012 CDG → JFK Jun 23, 18:55 UTCJun 24, 02:30 UTC7h 35m
2026-06-21 AFR333F - Jun 21, 22:44 UTCJun 22, 04:40 UTC5h 55m
2026-06-21 AFR334M CDG → BOS Jun 21, 12:49 UTCJun 21, 19:34 UTC6h 45m
2026-06-21 AFR4087 SEA → CDG Jun 21, 04:10 UTCJun 21, 09:15 UTC5h 5m
2026-06-21 AFR4087 SEA → CDG Jun 21, 01:55 UTCJun 21, 04:04 UTC2h 10m
2026-06-20 AFR136 CDG → ORD Jun 20, 15:24 UTCJun 20, 23:29 UTC8h 5m
2026-06-20 AFR136 CDG → ORD Jun 20, 11:30 UTCJun 20, 12:45 UTC1h 15m

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

Mode-S 39D2B4 frequently asked

What is Mode-S code 39D2B4?
39D2B4 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUVU.
Where is Mode-S 39D2B4 registered?
Mode-S code 39D2B4 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D2B4 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 39D2B4, octal 16351264, decimal 3,789,492.
What flights does 39D2B4 operate?
Mode-S 39D2B4 has broadcast 20 distinct callsigns, including AFR062, AFR63J, AFR136, AFR137T, AFR333F.