sensors Mode-S transponder

39DE53

ICAO 24-bit transponder address · allocated to France

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

Hex
39DE53
Octal
16357123
Decimal
3,792,467
Country
FR
Tail
F-HXST
Type
A20N
No current signal · last broadcast 12h ago
Flights observed
15
Distinct callsigns
9
Country
FR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 39DE53.

Country allocation

The ICAO 24-bit address 39DE53 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 9 distinct

Callsign Airline Flights Last seen
TVF77YP - 3 2026-04-13
TVF30QP - 3 2026-04-13
TVF46VR - 2 2026-04-13
TVF13NV - 2 2026-04-14
TVF97AM - 1 2026-04-12
TVF89FS - 1 2026-04-14
TVF45BX - 1 2026-04-13
TVF431J - 1 2026-04-13
TVF42GK - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 TVF89FS - Apr 14, 10:05 UTCApr 14, 11:05 UTC1h 0m
2026-04-14 TVF13NV - Apr 14, 07:30 UTCApr 14, 07:50 UTC20m
2026-04-14 TVF13NV - Apr 14, 05:15 UTCApr 14, 06:55 UTC1h 40m
2026-04-13 TVF431J - Apr 13, 18:05 UTCApr 13, 19:40 UTC1h 35m
2026-04-13 TVF30QP - Apr 13, 16:15 UTCApr 13, 17:05 UTC50m
2026-04-13 TVF30QP - Apr 13, 15:50 UTCApr 13, 17:05 UTC1h 15m
2026-04-13 TVF30QP - Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 TVF77YP - Apr 13, 12:20 UTCApr 13, 14:10 UTC1h 50m
2026-04-13 TVF77YP - Apr 13, 11:55 UTCApr 13, 14:10 UTC2h 15m
2026-04-13 TVF77YP - Apr 13, 11:30 UTCApr 13, 12:15 UTC45m
2026-04-13 TVF46VR - Apr 13, 08:20 UTCApr 13, 10:05 UTC1h 45m
2026-04-13 TVF46VR - Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-13 TVF45BX - Apr 13, 04:50 UTCApr 13, 06:20 UTC1h 30m
2026-04-12 TVF97AM - Apr 12, 19:30 UTCApr 12, 20:15 UTC45m
2026-04-12 TVF42GK - Apr 12, 17:15 UTCApr 12, 18:20 UTC1h 5m

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

Mode-S 39DE53 frequently asked

What is Mode-S code 39DE53?
39DE53 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HXST.
Where is Mode-S 39DE53 registered?
Mode-S code 39DE53 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39DE53 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39DE53, octal 16357123, decimal 3,792,467.
What flights does 39DE53 operate?
Mode-S 39DE53 has broadcast 9 distinct callsigns, including TVF77YP, TVF30QP, TVF46VR, TVF13NV, TVF97AM.