sensors Mode-S transponder

39D306

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HUYG · BOEING 737-800

Hex
39D306
Octal
16351406
Decimal
3,789,574
Country
FR
Tail
F-HUYG
Type
B738
No current signal · last broadcast 20h ago
Flights observed
13
Distinct callsigns
6
Country
FR
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 39D306.

Country allocation

The ICAO 24-bit address 39D306 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 6 distinct

Callsign Airline Flights Last seen
TVF40MZ - 3 2026-04-14
TVF22TA - 3 2026-04-13
TVF17EZ - 3 2026-04-13
TVF64YY - 2 2026-04-13
TVF68ZA - 1 2026-04-12
TVF63HF - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 TVF40MZ - Apr 14, 09:10 UTCApr 14, 10:40 UTC1h 30m
2026-04-14 TVF40MZ - Apr 14, 07:10 UTCApr 14, 09:00 UTC1h 50m
2026-04-14 TVF40MZ - Apr 14, 06:35 UTCApr 14, 07:10 UTC35m
2026-04-13 TVF64YY - Apr 13, 19:50 UTCApr 13, 19:55 UTC5m
2026-04-13 TVF64YY - Apr 13, 18:40 UTCApr 13, 19:55 UTC1h 15m
2026-04-13 TVF63HF - Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 TVF22TA - Apr 13, 12:20 UTCApr 13, 14:40 UTC2h 20m
2026-04-13 TVF22TA - Apr 13, 11:55 UTCApr 13, 14:40 UTC2h 45m
2026-04-13 TVF22TA - Apr 13, 11:15 UTCApr 13, 12:15 UTC1h 0m
2026-04-13 TVF17EZ - Apr 13, 08:20 UTCApr 13, 10:05 UTC1h 45m
2026-04-13 TVF17EZ - Apr 13, 07:55 UTCApr 13, 10:05 UTC2h 10m
2026-04-13 TVF17EZ - Apr 13, 06:40 UTCApr 13, 08:15 UTC1h 35m
2026-04-12 TVF68ZA - Apr 12, 17:15 UTCApr 12, 20:10 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-HUYG page for operator, model, and routing details .

Mode-S 39D306 frequently asked

What is Mode-S code 39D306?
39D306 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUYG.
Where is Mode-S 39D306 registered?
Mode-S code 39D306 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D306 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D306, octal 16351406, decimal 3,789,574.
What flights does 39D306 operate?
Mode-S 39D306 has broadcast 6 distinct callsigns, including TVF40MZ, TVF22TA, TVF17EZ, TVF64YY, TVF68ZA.