sensors Mode-S transponder

39DE4A

ICAO 24-bit transponder address · allocated to France

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

Hex
39DE4A
Octal
16357112
Decimal
3,792,458
Country
FR
Tail
F-HSXK
Type
A20N
No current signal · last broadcast Jul 26, 19:45 UTC
Flights observed
468
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 19:45 UTC

Last known position

Most recent position reported by Mode-S 39DE4A.

Country allocation

The ICAO 24-bit address 39DE4A 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 20 distinct

Callsign Airline Flights Last seen
TVF73RQ - 7 2026-06-28
TVF591U - 7 2026-07-20
TVF41JM - 7 2026-06-29
TVF26SK - 7 2026-07-22
TVF85UD - 6 2026-07-18
TVF42VD - 6 2026-07-22
TVF98NQ - 5 2026-07-18
TVF82QK - 5 2026-07-18
TVF77CG - 5 2026-05-27
TVF64TW - 5 2026-07-08
TVF54ZE - 5 2026-07-19
TVF49MD - 5 2026-05-29
TVF4370 - 5 2026-06-19
TVF31HC - 5 2026-05-27
TVF30QP - 5 2026-06-15
TVF97PR - 4 2026-07-06
TVF97AM - 4 2026-07-01
TVF95BQ - 4 2026-06-12
TVF8336 - 4 2026-07-05
TVF81AZ - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TVF247A - Jul 26, 17:20 UTCJul 26, 19:45 UTC2h 25m
2026-07-26 TVF12GT IBZ → ORY Jul 26, 14:00 UTCJul 26, 15:50 UTC1h 50m
2026-07-26 TVF74JQ ORY → IBZ Jul 26, 11:05 UTCJul 26, 12:50 UTC1h 45m
2026-07-26 TVF59JS - Jul 26, 07:30 UTCJul 26, 09:45 UTC2h 15m
2026-07-26 TVF40DK - Jul 26, 04:05 UTCJul 26, 06:05 UTC2h 0m
2026-07-25 TVF60SE - Jul 25, 18:20 UTCJul 25, 20:30 UTC2h 10m
2026-07-25 TVF63YH - Jul 25, 15:25 UTCJul 25, 17:15 UTC1h 50m
2026-07-25 TVF89FS - Jul 25, 10:55 UTCJul 25, 14:10 UTC3h 15m
2026-07-25 TVF13NV - Jul 25, 05:50 UTCJul 25, 09:15 UTC3h 25m
2026-07-24 TVF89EQ PMI → ORY Jul 24, 17:10 UTCJul 24, 18:40 UTC1h 30m
2026-07-24 TVF24YJ - Jul 24, 14:10 UTCJul 24, 15:40 UTC1h 30m
2026-07-24 TVF38EG - Jul 24, 10:45 UTCJul 24, 12:55 UTC2h 10m
2026-07-24 TVF44UJ - Jul 24, 07:20 UTCJul 24, 09:10 UTC1h 50m
2026-07-24 TVF83MR BCN → ORY Jul 24, 04:25 UTCJul 24, 05:45 UTC1h 20m
2026-07-23 TVF32DR ORY → BCN Jul 23, 20:00 UTCJul 23, 21:20 UTC1h 20m
2026-07-23 TVF179X TNG → ORY Jul 23, 16:30 UTCJul 23, 18:40 UTC2h 10m
2026-07-23 TVF33TY - Jul 23, 13:05 UTCJul 23, 15:25 UTC2h 20m
2026-07-23 TVF67YK ORY → ORY Jul 23, 04:40 UTCJul 23, 11:15 UTC6h 35m
2026-07-22 TVF26SK - Jul 22, 16:40 UTCJul 22, 20:00 UTC3h 20m
2026-07-22 TVF42VD - Jul 22, 12:35 UTCJul 22, 15:25 UTC2h 50m
2026-07-22 TVF8965 MIR → ORY Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-21 TVF6411 DJE → ORY Jul 21, 17:00 UTCJul 21, 19:35 UTC2h 35m
2026-07-21 TVF6410 ORY → DJE Jul 21, 13:30 UTCJul 21, 15:30 UTC2h 0m
2026-07-21 TVF36VX - Jul 21, 08:40 UTCJul 21, 12:00 UTC3h 20m
2026-07-21 TVF21BA - Jul 21, 04:15 UTCJul 21, 07:05 UTC2h 50m
2026-07-20 TVF234P - Jul 20, 18:05 UTCJul 20, 19:55 UTC1h 50m
2026-07-20 TVF15DN - Jul 20, 14:30 UTCJul 20, 16:45 UTC2h 15m
2026-07-20 TVF87TP - Jul 20, 10:00 UTCJul 20, 12:20 UTC2h 20m
2026-07-20 TVF591U - Jul 20, 05:25 UTCJul 20, 08:20 UTC2h 55m
2026-07-19 TVF64FU VLC → ORY Jul 19, 17:10 UTCJul 19, 18:40 UTC1h 30m
2026-07-19 TVF86FD ORY → VLC Jul 19, 14:20 UTCJul 19, 15:55 UTC1h 35m
2026-07-19 TVF31MA - Jul 19, 11:40 UTCJul 19, 13:05 UTC1h 25m
2026-07-19 TVF93EP - Jul 19, 08:05 UTCJul 19, 10:05 UTC2h 0m
2026-07-19 TVF54ZE - Jul 19, 05:00 UTCJul 19, 06:30 UTC1h 30m
2026-07-18 TVF85UD - Jul 18, 19:30 UTCJul 18, 21:15 UTC1h 45m
2026-07-18 TVF98NQ - Jul 18, 16:15 UTCJul 18, 17:55 UTC1h 40m
2026-07-18 TVF82QK - Jul 18, 13:15 UTCJul 18, 14:50 UTC1h 35m
2026-07-18 TVF73JT - Jul 18, 10:35 UTCJul 18, 12:05 UTC1h 30m
2026-07-18 TVF55JD - Jul 18, 07:50 UTCJul 18, 09:10 UTC1h 20m
2026-07-17 TVF35DL PRG → ORY Jul 17, 20:04 UTCJul 17, 21:25 UTC1h 20m
2026-07-17 TVF21ZC ORY → PRG Jul 17, 17:55 UTCJul 17, 19:09 UTC1h 15m
2026-07-17 TVF97QZ - Jul 17, 10:00 UTCJul 17, 12:15 UTC2h 15m
2026-07-17 TVF24KU - Jul 17, 06:29 UTCJul 17, 08:49 UTC2h 20m
2026-07-16 TVF8099 SFA → ORY Jul 16, 09:55 UTCJul 16, 12:30 UTC2h 35m
2026-07-16 TVF8098 ORY → SFA Jul 16, 06:35 UTCJul 16, 08:55 UTC2h 20m
2026-07-15 TVF8099 SFA → ORY Jul 15, 16:10 UTCJul 15, 18:55 UTC2h 45m
2026-07-15 TVF8098 ORY → SFA Jul 15, 12:45 UTCJul 15, 15:05 UTC2h 20m
2026-07-15 TVF76BC FAO → ORY Jul 15, 09:05 UTCJul 15, 11:00 UTC1h 55m
2026-07-15 TVF24RS ORY → FAO Jul 15, 05:40 UTCJul 15, 08:05 UTC2h 25m
2026-07-14 TVF39ET - Jul 14, 17:00 UTCJul 14, 20:05 UTC3h 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-HSXK page for operator, model, and routing details .

Mode-S 39DE4A frequently asked

What is Mode-S code 39DE4A?
39DE4A is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HSXK.
Where is Mode-S 39DE4A registered?
Mode-S code 39DE4A is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39DE4A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39DE4A, octal 16357112, decimal 3,792,458.
What flights does 39DE4A operate?
Mode-S 39DE4A has broadcast 20 distinct callsigns, including TVF73RQ, TVF591U, TVF41JM, TVF26SK, TVF85UD.