sensors Mode-S transponder

39DE40

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HXSA · AIRBUS A-320neo

Hex
39DE40
Octal
16357100
Decimal
3,792,448
Country
FR
Tail
F-HXSA
Type
A20N
Broadcasting now · callsign TVF3000 · 37,000 ft
Flights observed
14
Distinct callsigns
8
Country
FR
Last broadcast
19h ago

Current position

39DE40 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39DE40 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
TVF37MF - 3 2026-04-13
TVF89CZ - 2 2026-04-13
TVF50AD - 2 2026-04-13
TVF3423 - 2 2026-04-13
TVF14KM Transavia France 2 2026-04-14
TVF40QU Transavia France 1 2026-04-13
TVF3422 - 1 2026-04-12
TVF13DQ - 1 2026-04-14

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 TVF14KM OPO → ORY Apr 14, 09:10 UTCApr 14, 09:25 UTC15m
2026-04-14 TVF14KM OPO → ORY Apr 14, 07:25 UTCApr 14, 09:05 UTC1h 40m
2026-04-14 TVF13DQ - Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 TVF50AD - Apr 13, 19:50 UTCApr 13, 20:00 UTC10m
2026-04-13 TVF50AD - Apr 13, 18:25 UTCApr 13, 20:00 UTC1h 35m
2026-04-13 TVF37MF - Apr 13, 16:15 UTCApr 13, 17:05 UTC50m
2026-04-13 TVF37MF - Apr 13, 15:50 UTCApr 13, 17:05 UTC1h 15m
2026-04-13 TVF37MF - Apr 13, 15:25 UTCApr 13, 16:15 UTC50m
2026-04-13 TVF89CZ - Apr 13, 12:20 UTCApr 13, 14:15 UTC1h 55m
2026-04-13 TVF89CZ - Apr 13, 12:05 UTCApr 13, 12:15 UTC10m
2026-04-13 TVF40QU ORY → SVQ Apr 13, 08:45 UTCApr 13, 10:40 UTC1h 55m
2026-04-13 TVF3423 - Apr 13, 04:20 UTCApr 13, 07:00 UTC2h 40m
2026-04-13 TVF3423 - Apr 13, 04:05 UTCApr 13, 04:15 UTC10m
2026-04-12 TVF3422 - Apr 12, 17:45 UTCApr 12, 20:15 UTC2h 30m

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

Mode-S 39DE40 frequently asked

What is Mode-S code 39DE40?
39DE40 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HXSA.
Where is Mode-S 39DE40 registered?
Mode-S code 39DE40 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39DE40 broadcasting right now?
Yes. Mode-S 39DE40 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39DE40, octal 16357100, decimal 3,792,448.
What flights does 39DE40 operate?
Mode-S 39DE40 has broadcast 8 distinct callsigns, including TVF37MF, TVF89CZ, TVF50AD, TVF3423, TVF14KM.