sensors Mode-S transponder

39D2A8

ICAO 24-bit transponder address · allocated to France

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

Hex
39D2A8
Octal
16351250
Decimal
3,789,480
Country
FR
Tail
F-HUVI
Type
A359
Transponder active on ground
Flights observed
9
Distinct callsigns
5
Country
FR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 39D2A8.

Country allocation

The ICAO 24-bit address 39D2A8 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 5 distinct

Callsign Airline Flights Last seen
AFR099 - 3 2026-04-13
AFR062 Air France 3 2026-04-13
AFR98G Air France 1 2026-04-12
AFR63J - 1 2026-04-13
AFR460 Air France 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 AFR460 CDG → GRU Apr 14, 09:15 UTCApr 14, 10:40 UTC1h 25m
2026-04-13 AFR63J - Apr 13, 21:20 UTCApr 13, 22:50 UTC1h 30m
2026-04-13 AFR062 CDG → EWR Apr 13, 16:20 UTCApr 13, 18:30 UTC2h 10m
2026-04-13 AFR062 CDG → EWR Apr 13, 11:55 UTCApr 13, 12:25 UTC30m
2026-04-13 AFR062 CDG → EWR Apr 13, 10:50 UTCApr 13, 12:15 UTC1h 25m
2026-04-13 AFR099 - Apr 13, 04:40 UTCApr 13, 06:15 UTC1h 35m
2026-04-13 AFR099 - Apr 13, 00:20 UTCApr 13, 01:30 UTC1h 10m
2026-04-12 AFR099 - Apr 12, 23:55 UTCApr 13, 01:30 UTC1h 35m
2026-04-12 AFR98G CDG → IAH Apr 12, 17:15 UTCApr 12, 18:50 UTC1h 35m

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

Mode-S 39D2A8 frequently asked

What is Mode-S code 39D2A8?
39D2A8 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUVI.
Where is Mode-S 39D2A8 registered?
Mode-S code 39D2A8 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D2A8 broadcasting right now?
Mode-S 39D2A8 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D2A8, octal 16351250, decimal 3,789,480.
What flights does 39D2A8 operate?
Mode-S 39D2A8 has broadcast 5 distinct callsigns, including AFR099, AFR062, AFR98G, AFR63J, AFR460.