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 4h ago
Flights observed
114
Distinct callsigns
20
Country
FR
Last broadcast
4h 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 Air France 12 2026-05-27
AFR267 Air France 11 2026-05-27
AFR52X Air France 7 2026-05-07
AFR995 Air France 6 2026-05-18
AFR990 Air France 6 2026-05-17
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
AFR188 Air France 4 2026-05-24
AFR173 Air France 4 2026-05-20
AFR668 Air France 3 2026-05-27
AFR63J Air France 3 2026-05-10
AFR198 Air France 3 2026-05-16
AFR174 Air France 3 2026-05-19
AFR669 Air France 2 2026-05-29
AFR199 Air France 2 2026-05-17
AFR191 Air France 2 2026-04-29
AFR062 Air France 2 2026-05-10
AFR98G Air France 1 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFR490 CDG → PTY May 30, 14:30 UTCMay 30, 16:05 UTC1h 35m
2026-05-29 AFR459 GRU → CDG May 29, 22:50 UTCMay 30, 09:30 UTC10h 40m
2026-05-29 AFR460 CDG → GRU May 29, 09:10 UTCMay 29, 20:10 UTC11h 0m
2026-05-29 AFR669 JIB → CDG May 29, 00:20 UTCMay 29, 03:45 UTC3h 25m
2026-05-27 AFR668 CDG → JIB May 27, 21:55 UTCMay 28, 00:40 UTC2h 45m
2026-05-27 AFR267 ICN → CDG May 27, 09:50 UTCMay 27, 18:00 UTC8h 10m
2026-05-27 AFR267 ICN → CDG May 27, 04:30 UTCMay 27, 04:45 UTC15m
2026-05-27 AFR264 CDG → ICN May 27, 01:19 UTCMay 27, 01:39 UTC20m
2026-05-26 AFR264 CDG → ICN May 26, 14:24 UTCMay 27, 00:34 UTC10h 10m
2026-05-25 AFR185 HKG → CDG May 25, 19:50 UTCMay 26, 03:40 UTC7h 50m
2026-05-25 AFR185 HKG → CDG May 25, 14:40 UTCMay 25, 15:00 UTC20m
2026-05-24 AFR188 CDG → HKG May 24, 23:00 UTCMay 25, 10:00 UTC11h 0m
2026-05-24 AFR267 ICN → CDG May 24, 08:15 UTCMay 24, 16:00 UTC7h 45m
2026-05-24 AFR267 ICN → CDG May 24, 03:00 UTCMay 24, 03:15 UTC15m
2026-05-24 AFR264 CDG → ICN May 24, 00:00 UTCMay 24, 00:20 UTC20m
2026-05-23 AFR264 CDG → ICN May 23, 13:00 UTCMay 23, 17:20 UTC4h 20m
2026-05-22 AFR099 MIA → CDG May 22, 21:10 UTCMay 23, 05:45 UTC8h 34m
2026-05-22 AFR98G CDG → IAH May 22, 08:45 UTCMay 22, 18:40 UTC9h 55m
2026-05-22 AFR669 JIB → CDG May 22, 00:05 UTCMay 22, 03:25 UTC3h 20m
2026-05-21 AFR668 CDG → JIB May 21, 00:20 UTCMay 22, 00:15 UTC23h 55m
2026-05-20 AFR668 CDG → JIB May 20, 21:55 UTCMay 21, 00:40 UTC2h 45m
2026-05-20 AFR173 MEX → CDG May 20, 05:25 UTCMay 20, 14:40 UTC9h 15m
2026-05-20 AFR173 MEX → CDG May 20, 04:40 UTCMay 20, 04:50 UTC10m
2026-05-19 AFR174 CDG → MEX May 19, 14:35 UTCMay 20, 01:55 UTC11h 20m
2026-05-18 AFR995 JNB → CDG May 18, 17:05 UTCMay 19, 03:50 UTC10h 44m
2026-05-17 AFR990 CDG → JNB May 17, 21:45 UTCMay 18, 07:50 UTC10h 5m
2026-05-17 AFR199 BKK → CDG May 17, 04:50 UTCMay 17, 17:15 UTC12h 25m
2026-05-16 AFR198 CDG → BKK May 16, 15:10 UTCMay 17, 00:10 UTC9h 0m
2026-05-16 AFR179 MEX → CDG May 16, 01:50 UTCMay 16, 11:46 UTC9h 56m
2026-05-15 AFR178 CDG → MEX May 15, 11:55 UTCMay 15, 22:55 UTC10h 59m
2026-05-14 AFR375G YVR → CDG May 14, 21:45 UTCMay 15, 06:30 UTC8h 45m
2026-05-14 AFR374F CDG → YVR May 14, 09:05 UTCMay 14, 18:35 UTC9h 30m
2026-05-13 AFR185 HKG → CDG May 13, 22:55 UTCMay 14, 03:40 UTC4h 45m
2026-05-13 AFR185 HKG → CDG May 13, 14:45 UTCMay 13, 15:05 UTC20m
2026-05-13 AFR188 CDG → HKG May 13, 09:05 UTCMay 13, 09:45 UTC40m
2026-05-12 AFR188 CDG → HKG May 12, 21:50 UTCMay 13, 07:00 UTC9h 10m
2026-05-12 AFR081 SFO → CDG May 12, 03:40 UTCMay 12, 13:30 UTC9h 50m
2026-05-11 AFR82M CDG → SFO May 11, 14:10 UTCMay 11, 22:35 UTC8h 25m
2026-05-10 AFR63J EWR → CDG May 10, 21:19 UTCMay 11, 03:55 UTC6h 35m
2026-05-10 AFR062 CDG → EWR May 10, 11:10 UTCMay 10, 18:29 UTC7h 20m
2026-05-09 AFR199 BKK → CDG May 9, 05:25 UTCMay 9, 17:40 UTC12h 15m
2026-05-09 AFR198 CDG → BKK May 9, 02:00 UTCMay 9, 02:15 UTC15m
2026-05-08 AFR198 CDG → BKK May 8, 15:10 UTCMay 8, 22:30 UTC7h 20m
2026-05-08 AFR53M IAD → CDG May 8, 01:55 UTCMay 8, 08:49 UTC6h 55m
2026-05-07 AFR52X CDG → IAD May 7, 15:20 UTCMay 7, 23:24 UTC8h 4m
2026-05-07 AFR11E JFK → CDG May 7, 06:00 UTCMay 7, 12:30 UTC6h 30m
2026-05-06 AFR012 CDG → JFK May 6, 18:55 UTCMay 7, 02:10 UTC7h 15m
2026-05-06 AFR173 MEX → CDG May 6, 05:00 UTCMay 6, 15:10 UTC10h 10m
2026-05-05 AFR174 CDG → MEX May 5, 15:01 UTCMay 6, 02:25 UTC11h 25m
2026-05-03 AFR995 JNB → CDG May 3, 17:05 UTCMay 4, 03:45 UTC10h 40m

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 4h 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, AFR52X, AFR995, AFR990.