sensors Mode-S transponder

39D318

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HUYY · BOEING 737-800

Hex
39D318
Octal
16351430
Decimal
3,789,592
Country
FR
Tail
F-HUYY
Type
B738
No current signal · last broadcast 16h ago
Flights observed
14
Distinct callsigns
8
Country
FR
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 39D318.

Country allocation

The ICAO 24-bit address 39D318 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 8 distinct

Callsign Airline Flights Last seen
TVF3029 Transavia France 3 2026-04-13
TVF15GP - 3 2026-04-13
TVF8497 Transavia France 2 2026-04-14
TVF8496 - 2 2026-04-13
TVF91FT - 1 2026-04-12
TVF7271 Transavia France 1 2026-04-13
TVF7270 - 1 2026-04-12
TVF46JB - 1 2026-04-14

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 TVF46JB - Apr 14, 10:05 UTCApr 14, 11:05 UTC1h 0m
2026-04-14 TVF8497 DJE → ORY Apr 14, 07:10 UTCApr 14, 07:50 UTC40m
2026-04-14 TVF8497 DJE → ORY Apr 14, 05:45 UTCApr 14, 07:10 UTC1h 25m
2026-04-13 TVF8496 - Apr 13, 19:50 UTCApr 13, 20:55 UTC1h 5m
2026-04-13 TVF8496 - Apr 13, 19:15 UTCApr 13, 20:10 UTC55m
2026-04-13 TVF3029 OUD → ORY Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 TVF3029 OUD → ORY Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 TVF3029 OUD → ORY Apr 13, 14:00 UTCApr 13, 16:15 UTC2h 15m
2026-04-13 TVF15GP - Apr 13, 12:20 UTCApr 13, 12:50 UTC30m
2026-04-13 TVF15GP - Apr 13, 11:55 UTCApr 13, 12:50 UTC55m
2026-04-13 TVF15GP - Apr 13, 10:45 UTCApr 13, 12:15 UTC1h 30m
2026-04-13 TVF7271 ALG → ORY Apr 13, 05:20 UTCApr 13, 07:05 UTC1h 45m
2026-04-12 TVF7270 - Apr 12, 19:30 UTCApr 12, 20:15 UTC45m
2026-04-12 TVF91FT - Apr 12, 17:15 UTCApr 12, 17:50 UTC35m

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

Mode-S 39D318 frequently asked

What is Mode-S code 39D318?
39D318 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUYY.
Where is Mode-S 39D318 registered?
Mode-S code 39D318 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D318 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D318, octal 16351430, decimal 3,789,592.
What flights does 39D318 operate?
Mode-S 39D318 has broadcast 8 distinct callsigns, including TVF3029, TVF15GP, TVF8497, TVF8496, TVF91FT.