Apparatus

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sensors Mode-S transponder

39D2A1

ICAO 24-bit transponder address · allocated to France

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

Hex
39D2A1
Octal
16351241
Decimal
3,789,473
Country
FR
Tail
F-HUVB
Type
A359
No current signal · last broadcast 15h ago
Flights observed
193
Distinct callsigns
20
Country
FR
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 39D2A1.

Country allocation

The ICAO 24-bit address 39D2A1 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
AFR264 - 16 2026-07-04
AFR267 - 15 2026-07-04
AFR995 - 8 2026-06-16
AFR990 - 8 2026-06-15
AFR52X Air France 8 2026-06-03
AFR53M Air France 6 2026-05-08
AFR185 Air France 6 2026-05-25
AFR179 Air France 6 2026-05-16
AFR178 Air France 6 2026-05-15
AFR173 Air France 5 2026-06-07
AFR460 - 4 2026-07-02
AFR459 - 4 2026-07-02
AFR334M - 4 2026-07-13
AFR333F - 4 2026-07-13
AFR188 Air France 4 2026-05-24
AFR174 Air France 4 2026-06-06
AFR137T - 4 2026-07-10
AFR136 - 4 2026-07-10
AFR099 - 4 2026-06-24
AFR029 - 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR376V - Jul 14, 06:35 UTCJul 14, 07:35 UTC1h 0m
2026-07-13 AFR333F BOS → CDG Jul 13, 21:35 UTCJul 14, 03:45 UTC6h 10m
2026-07-13 AFR334M - Jul 13, 11:45 UTCJul 13, 18:30 UTC6h 45m
2026-07-12 AFR159X - Jul 12, 21:45 UTCJul 13, 06:55 UTC9h 10m
2026-07-12 AFR158M CDG → DFW Jul 12, 08:35 UTCJul 12, 18:05 UTC9h 30m
2026-07-11 AFR333F - Jul 11, 21:35 UTCJul 12, 03:40 UTC6h 5m
2026-07-11 AFR334M - Jul 11, 11:35 UTCJul 11, 18:35 UTC7h 0m
2026-07-10 AFR137T ORD → CDG Jul 10, 22:50 UTCJul 11, 06:15 UTC7h 25m
2026-07-10 AFR136 - Jul 10, 12:05 UTCJul 10, 20:20 UTC8h 15m
2026-07-10 AFR331E - Jul 10, 02:20 UTCJul 10, 08:25 UTC6h 5m
2026-07-09 AFR332 - Jul 9, 16:05 UTCJul 9, 23:05 UTC7h 0m
2026-07-09 AFR11E - Jul 9, 05:40 UTCJul 9, 12:05 UTC6h 25m
2026-07-08 AFR012 - Jul 8, 18:50 UTCJul 9, 02:10 UTC7h 20m
2026-07-08 AFR019 - Jul 8, 04:30 UTCJul 8, 14:50 UTC10h 20m
2026-07-07 AFR019 - Jul 7, 18:00 UTCJul 8, 01:45 UTC7h 45m
2026-07-07 AFR018 - Jul 7, 15:05 UTCJul 7, 15:20 UTC15m
2026-07-07 AFR018 - Jul 7, 07:45 UTCJul 7, 15:00 UTC7h 15m
2026-07-06 AFR018 - Jul 6, 17:50 UTCJul 7, 04:50 UTC11h 0m
2026-07-06 AFR187 - Jul 6, 00:15 UTCJul 6, 14:10 UTC13h 55m
2026-07-05 AFR186 LAS → CDG Jul 5, 08:15 UTCJul 5, 20:30 UTC12h 15m
2026-07-04 AFR267 - Jul 4, 04:15 UTCJul 4, 16:10 UTC11h 55m
2026-07-04 AFR267 - Jul 4, 03:05 UTCJul 4, 03:20 UTC15m
2026-07-04 AFR264 - Jul 4, 00:10 UTCJul 4, 00:30 UTC20m
2026-07-03 AFR264 - Jul 3, 13:25 UTCJul 3, 23:25 UTC10h 0m
2026-07-02 AFR459 - Jul 2, 22:55 UTCJul 3, 09:45 UTC10h 50m
2026-07-02 AFR460 - Jul 2, 09:30 UTCJul 2, 20:40 UTC11h 10m
2026-07-01 AFR287 HND → CDG Jul 1, 03:05 UTCJul 1, 16:45 UTC13h 40m
2026-06-30 AFR286 CDG → HND Jun 30, 11:05 UTCJun 30, 23:35 UTC12h 30m
2026-06-29 AFR705 - Jun 29, 17:10 UTCJun 30, 07:50 UTC14h 41m
2026-06-29 AFR187 - Jun 29, 00:34 UTCJun 29, 14:09 UTC13h 35m
2026-06-28 AFR186 LAS → CDG Jun 28, 08:14 UTCJun 28, 20:29 UTC12h 15m
2026-06-27 AFR267 - Jun 27, 04:09 UTCJun 27, 16:14 UTC12h 5m
2026-06-27 AFR267 - Jun 27, 03:04 UTCJun 27, 03:20 UTC15m
2026-06-27 AFR264 - Jun 27, 00:05 UTCJun 27, 00:25 UTC20m
2026-06-26 AFR264 - Jun 26, 13:19 UTCJun 26, 23:19 UTC10h 0m
2026-06-25 AFR459 - Jun 25, 23:09 UTCJun 26, 09:39 UTC10h 30m
2026-06-25 AFR460 - Jun 25, 09:20 UTCJun 25, 20:30 UTC11h 10m
2026-06-24 AFR333F BOS → CDG Jun 24, 21:40 UTCJun 25, 03:40 UTC6h 0m
2026-06-24 AFR334M - Jun 24, 11:54 UTCJun 24, 19:00 UTC7h 5m
2026-06-24 AFR099 - Jun 24, 05:34 UTCJun 24, 07:10 UTC1h 35m
2026-06-23 AFR099 - Jun 23, 22:34 UTCJun 24, 02:15 UTC3h 40m
2026-06-23 AFR98G - Jun 23, 10:10 UTCJun 23, 20:10 UTC10h 0m
2026-06-22 AFR137T - Jun 22, 22:40 UTCJun 23, 05:59 UTC7h 20m
2026-06-22 AFR136 CDG → ORD Jun 22, 11:44 UTCJun 22, 19:54 UTC8h 10m
2026-06-21 AFR029 - Jun 21, 04:14 UTCJun 21, 14:15 UTC10h 0m
2026-06-20 AFR029 - Jun 20, 18:14 UTCJun 21, 01:49 UTC7h 35m
2026-06-20 AFR028 - Jun 20, 07:39 UTCJun 20, 15:19 UTC7h 40m
2026-06-19 AFR028 - Jun 19, 18:05 UTCJun 20, 04:39 UTC10h 35m
2026-06-18 AFR137T ORD → CDG Jun 18, 22:40 UTCJun 19, 05:54 UTC7h 14m
2026-06-18 AFR136 CDG → ORD Jun 18, 11:35 UTCJun 18, 19:35 UTC8h 0m

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

Mode-S 39D2A1 frequently asked

What is Mode-S code 39D2A1?
39D2A1 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUVB.
Where is Mode-S 39D2A1 registered?
Mode-S code 39D2A1 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D2A1 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D2A1, octal 16351241, decimal 3,789,473.
What flights does 39D2A1 operate?
Mode-S 39D2A1 has broadcast 20 distinct callsigns, including AFR264, AFR267, AFR995, AFR990, AFR52X.