sensors Mode-S transponder

39D2AB

ICAO 24-bit transponder address · allocated to France

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

Hex
39D2AB
Octal
16351253
Decimal
3,789,483
Country
FR
Tail
F-HUVL
Type
A359
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
3
Country
FR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 39D2AB.

Country allocation

The ICAO 24-bit address 39D2AB 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 3 distinct

Callsign Airline Flights Last seen
AFR459 Air France 4 2026-04-13
AFR264 Air France 3 2026-04-13
AFR460 Air France 1 2026-04-12

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 AFR264 CDG → ICN Apr 13, 16:45 UTCApr 13, 17:30 UTC45m
2026-04-13 AFR264 CDG → ICN Apr 13, 15:50 UTCApr 13, 17:30 UTC1h 40m
2026-04-13 AFR264 CDG → ICN Apr 13, 13:20 UTCApr 13, 16:00 UTC2h 40m
2026-04-13 AFR459 GRU → CDG Apr 13, 08:20 UTCApr 13, 10:05 UTC1h 45m
2026-04-13 AFR459 GRU → CDG Apr 13, 07:55 UTCApr 13, 10:05 UTC2h 10m
2026-04-13 AFR459 GRU → CDG Apr 13, 06:20 UTCApr 13, 08:15 UTC1h 55m
2026-04-13 AFR459 GRU → CDG Apr 13, 00:20 UTCApr 13, 02:15 UTC1h 55m
2026-04-12 AFR460 CDG → GRU Apr 12, 17:20 UTCApr 12, 20:15 UTC2h 55m

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

Mode-S 39D2AB frequently asked

What is Mode-S code 39D2AB?
39D2AB is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUVL.
Where is Mode-S 39D2AB registered?
Mode-S code 39D2AB is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D2AB broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D2AB, octal 16351253, decimal 3,789,483.
What flights does 39D2AB operate?
Mode-S 39D2AB has broadcast 3 distinct callsigns, including AFR459, AFR264, AFR460.