sensors Mode-S transponder

39D2B3

ICAO 24-bit transponder address · allocated to France

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

Hex
39D2B3
Octal
16351263
Decimal
3,789,491
Country
FR
Tail
F-HUVT
Type
A359
No current signal · last broadcast 3h ago
Flights observed
107
Distinct callsigns
20
Country
FR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 39D2B3.

Country allocation

The ICAO 24-bit address 39D2B3 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
AFR137T Air France 9 2026-05-26
AFR188 Air France 8 2026-05-28
AFR185 Air France 8 2026-05-28
AFR334M Air France 5 2026-05-11
AFR333F Air France 5 2026-05-11
AFR332 Air France 5 2026-05-07
AFR331E - 5 2026-05-08
AFR286 Air France 5 2026-04-17
AFR136 Air France 5 2026-05-25
AFR98G Air France 4 2026-05-24
AFR099 Air France 4 2026-05-24
AFR490 Air France 3 2026-04-13
AFR287 Air France 3 2026-04-18
AFR093 Air France 3 2026-05-30
AFR092 Air France 3 2026-05-29
AFR82M Air France 2 2026-05-26
AFR491 Air France 2 2026-04-14
AFR460 Air France 2 2026-05-12
AFR459 Air France 2 2026-05-12
AFR179 Air France 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFR093 MIA → CDG May 30, 03:45 UTCMay 30, 04:25 UTC40m
2026-05-29 AFR092 CDG → MIA May 29, 15:55 UTCMay 30, 00:55 UTC9h 0m
2026-05-28 AFR185 HKG → CDG May 28, 23:00 UTCMay 29, 03:55 UTC4h 55m
2026-05-28 AFR185 HKG → CDG May 28, 14:50 UTCMay 28, 15:10 UTC20m
2026-05-28 AFR188 CDG → HKG May 28, 08:55 UTCMay 28, 09:30 UTC35m
2026-05-27 AFR188 CDG → HKG May 27, 21:45 UTCMay 28, 01:55 UTC4h 10m
2026-05-27 AFR081 SFO → CDG May 27, 03:54 UTCMay 27, 13:55 UTC10h 1m
2026-05-26 AFR82M CDG → SFO May 26, 14:40 UTCMay 27, 00:44 UTC10h 5m
2026-05-26 AFR137T ORD → CDG May 26, 04:30 UTCMay 26, 06:14 UTC1h 45m
2026-05-25 AFR137T ORD → CDG May 25, 22:55 UTCMay 26, 01:05 UTC2h 10m
2026-05-25 AFR136 CDG → ORD May 25, 11:45 UTCMay 25, 19:59 UTC8h 14m
2026-05-24 AFR099 MIA → CDG May 24, 23:00 UTCMay 25, 06:40 UTC7h 40m
2026-05-24 AFR98G CDG → IAH May 24, 09:25 UTCMay 24, 19:25 UTC10h 0m
2026-05-23 AFR179 MEX → CDG May 23, 02:00 UTCMay 23, 11:45 UTC9h 45m
2026-05-22 AFR178 CDG → MEX May 22, 11:40 UTCMay 22, 23:15 UTC11h 35m
2026-05-21 AFR069 PHX → CDG May 21, 22:35 UTCMay 22, 07:55 UTC9h 20m
2026-05-21 AFR068 CDG → PHX May 21, 09:30 UTCMay 21, 19:40 UTC10h 10m
2026-05-20 AFR337P BFI → CDG May 20, 21:00 UTCMay 21, 06:30 UTC9h 30m
2026-05-20 AFR338 CDG → SEA May 20, 08:35 UTCMay 20, 17:50 UTC9h 15m
2026-05-19 AFR185 HKG → CDG May 19, 22:45 UTCMay 20, 03:20 UTC4h 35m
2026-05-19 AFR185 HKG → CDG May 19, 14:35 UTCMay 19, 14:55 UTC20m
2026-05-19 AFR188 CDG → HKG May 19, 09:10 UTCMay 19, 09:40 UTC30m
2026-05-18 AFR188 CDG → HKG May 18, 22:05 UTCMay 19, 02:15 UTC4h 10m
2026-05-18 AFR081 SFO → CDG May 18, 03:30 UTCMay 18, 13:25 UTC9h 55m
2026-05-17 AFR82M CDG → SFO May 17, 14:30 UTCMay 18, 00:45 UTC10h 15m
2026-05-16 AFR099 MIA → CDG May 16, 23:35 UTCMay 17, 08:25 UTC8h 50m
2026-05-16 AFR98G CDG → IAH May 16, 10:55 UTCMay 16, 21:00 UTC10h 5m
2026-05-12 AFR459 GRU → CDG May 12, 22:50 UTCMay 13, 09:15 UTC10h 25m
2026-05-12 AFR460 CDG → GRU May 12, 09:05 UTCMay 12, 20:25 UTC11h 20m
2026-05-11 AFR333F BOS → CDG May 11, 21:35 UTCMay 12, 03:40 UTC6h 5m
2026-05-11 AFR334M CDG → BOS May 11, 11:30 UTCMay 11, 18:20 UTC6h 50m
2026-05-10 AFR199 BKK → CDG May 10, 04:45 UTCMay 10, 17:10 UTC12h 25m
2026-05-09 AFR198 CDG → BKK May 9, 15:15 UTCMay 10, 01:45 UTC10h 30m
2026-05-09 AFR179 MEX → CDG May 9, 01:45 UTCMay 9, 11:50 UTC10h 5m
2026-05-08 AFR178 CDG → MEX May 8, 11:34 UTCMay 8, 23:20 UTC11h 45m
2026-05-08 AFR331E BOS → CDG May 8, 02:04 UTCMay 8, 08:09 UTC6h 5m
2026-05-07 AFR332 CDG → BOS May 7, 16:00 UTCMay 7, 23:24 UTC7h 24m
2026-05-06 AFR459 GRU → CDG May 6, 23:00 UTCMay 7, 09:40 UTC10h 40m
2026-05-06 AFR460 CDG → GRU May 6, 09:10 UTCMay 6, 20:30 UTC11h 19m
2026-05-04 AFR333F BOS → CDG May 4, 21:25 UTCMay 5, 03:35 UTC6h 10m
2026-05-04 AFR334M CDG → BOS May 4, 11:40 UTCMay 4, 18:35 UTC6h 56m
2026-05-03 AFR63J EWR → CDG May 3, 21:29 UTCMay 4, 04:05 UTC6h 35m
2026-05-03 AFR062 CDG → EWR May 3, 10:55 UTCMay 3, 18:14 UTC7h 20m
2026-05-01 AFR093 MIA → CDG May 1, 03:35 UTCMay 1, 11:55 UTC8h 20m
2026-04-30 AFR092 CDG → MIA Apr 30, 15:45 UTCMay 1, 00:50 UTC9h 5m
2026-04-30 AFR11E JFK → CDG Apr 30, 05:25 UTCApr 30, 12:15 UTC6h 50m
2026-04-29 AFR012 CDG → JFK Apr 29, 19:15 UTCApr 30, 02:10 UTC6h 54m
2026-04-29 AFR173 MEX → CDG Apr 29, 04:44 UTCApr 29, 15:15 UTC10h 31m
2026-04-28 AFR174 CDG → MEX Apr 28, 14:25 UTCApr 29, 01:35 UTC11h 10m
2026-04-28 AFR097 MCO → CDG Apr 28, 02:50 UTCApr 28, 11:20 UTC8h 30m

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

Mode-S 39D2B3 frequently asked

What is Mode-S code 39D2B3?
39D2B3 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUVT.
Where is Mode-S 39D2B3 registered?
Mode-S code 39D2B3 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D2B3 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D2B3, octal 16351263, decimal 3,789,491.
What flights does 39D2B3 operate?
Mode-S 39D2B3 has broadcast 20 distinct callsigns, including AFR137T, AFR188, AFR185, AFR334M, AFR333F.