Apparatus

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sensors Mode-S transponder

39DE42

ICAO 24-bit transponder address · allocated to France

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

Hex
39DE42
Octal
16357102
Decimal
3,792,450
Country
FR
Tail
F-HXSC
Type
A20N
Broadcasting now · callsign TVF87TP · 12,625 ft
Flights observed
26
Distinct callsigns
13
Country
FR
Last broadcast
57m ago

Current position

39DE42 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39DE42 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 13 distinct

Callsign Airline Flights Last seen
TVF68FN - 3 2026-04-18
TVF49MD - 3 2026-04-17
TVF4331 Transavia France 3 2026-04-17
TVF77YP - 2 2026-04-16
TVF57JF - 2 2026-04-18
TVF46VR - 2 2026-04-16
TVF3121 Transavia France 2 2026-04-17
TVF3120 Transavia France 2 2026-04-16
TVF3009 - 2 2026-04-13
TVF16LH Transavia France 2 2026-04-16
TVF39WG - 1 2026-04-13
TVF3004 Transavia France 1 2026-04-18
TVF26VL - 1 2026-04-16

Recent flights last 26

DateFlightRouteTakeoffLandingDuration
2026-04-18 TVF3004 ORY → AGA Apr 18, 10:10 UTCApr 18, 16:30 UTC6h 20m
2026-04-18 TVF57JF - Apr 18, 07:25 UTCApr 18, 08:40 UTC1h 15m
2026-04-18 TVF57JF - Apr 18, 07:10 UTCApr 18, 08:40 UTC1h 30m
2026-04-18 TVF68FN - Apr 18, 05:25 UTCApr 18, 06:00 UTC35m
2026-04-18 TVF68FN - Apr 18, 04:45 UTCApr 18, 06:00 UTC1h 15m
2026-04-18 TVF68FN - Apr 18, 04:35 UTCApr 18, 05:20 UTC45m
2026-04-17 TVF4331 CAI → ORY Apr 17, 19:25 UTCApr 17, 19:40 UTC15m
2026-04-17 TVF4331 CAI → ORY Apr 17, 17:25 UTCApr 17, 19:20 UTC1h 55m
2026-04-17 TVF4331 CAI → ORY Apr 17, 15:30 UTCApr 17, 17:15 UTC1h 45m
2026-04-17 TVF49MD - Apr 17, 13:20 UTCApr 17, 13:55 UTC35m
2026-04-17 TVF49MD - Apr 17, 11:20 UTCApr 17, 13:15 UTC1h 55m
2026-04-17 TVF49MD - Apr 17, 09:55 UTCApr 17, 11:15 UTC1h 20m
2026-04-17 TVF3121 AGA → ORY Apr 17, 07:20 UTCApr 17, 08:20 UTC1h 0m
2026-04-17 TVF3121 AGA → ORY Apr 17, 05:45 UTCApr 17, 07:15 UTC1h 30m
2026-04-16 TVF3120 ORY → AGA Apr 16, 19:15 UTCApr 16, 20:45 UTC1h 30m
2026-04-16 TVF3120 ORY → AGA Apr 16, 18:10 UTCApr 16, 19:10 UTC1h 0m
2026-04-16 TVF26VL - Apr 16, 15:15 UTCApr 16, 16:40 UTC1h 25m
2026-04-16 TVF16LH ORY → PMI Apr 16, 13:15 UTCApr 16, 13:40 UTC25m
2026-04-16 TVF16LH ORY → PMI Apr 16, 12:14 UTCApr 16, 13:05 UTC50m
2026-04-16 TVF77YP - Apr 16, 09:10 UTCApr 16, 10:29 UTC1h 20m
2026-04-16 TVF77YP - Apr 16, 08:00 UTCApr 16, 09:05 UTC1h 5m
2026-04-16 TVF46VR - Apr 16, 05:09 UTCApr 16, 06:34 UTC1h 25m
2026-04-16 TVF46VR - Apr 16, 04:24 UTCApr 16, 05:05 UTC40m
2026-04-13 TVF3009 - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 TVF3009 - Apr 13, 17:20 UTCApr 13, 20:10 UTC2h 50m
2026-04-13 TVF39WG - Apr 13, 12:45 UTCApr 13, 15:10 UTC2h 25m

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

Mode-S 39DE42 frequently asked

What is Mode-S code 39DE42?
39DE42 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HXSC.
Where is Mode-S 39DE42 registered?
Mode-S code 39DE42 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39DE42 broadcasting right now?
Yes. Mode-S 39DE42 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39DE42, octal 16357102, decimal 3,792,450.
What flights does 39DE42 operate?
Mode-S 39DE42 has broadcast 13 distinct callsigns, including TVF68FN, TVF49MD, TVF4331, TVF77YP, TVF57JF.