sensors Mode-S transponder

39DE51

ICAO 24-bit transponder address · allocated to France

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

Hex
39DE51
Octal
16357121
Decimal
3,792,465
Country
FR
Tail
F-HXSR
Type
A20N
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
407
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 39DE51.

Country allocation

The ICAO 24-bit address 39DE51 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
TVF39PQ - 8 2026-07-09
TVF21CH - 8 2026-07-09
TVF59WT Transavia France 6 2026-07-22
TVF539X - 6 2026-07-21
TVF276D - 6 2026-07-22
TVF235L - 6 2026-07-16
TVF15GP - 6 2026-07-08
TVF81AZ - 5 2026-05-27
TVF76SG - 5 2026-06-29
TVF73KL - 5 2026-07-03
TVF64TW Transavia France 5 2026-05-27
TVF58DM Transavia France 5 2026-06-10
TVF49MD - 5 2026-07-16
TVF43PN - 5 2026-06-28
TVF4370 Transavia France 5 2026-06-09
TVF3029 Transavia France 5 2026-04-18
TVF25AT - 5 2026-07-04
TVF98NQ - 4 2026-06-27
TVF97QZ - 4 2026-07-19
TVF41HB - 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TVF77SB - Jul 26, 16:55 UTCJul 26, 21:10 UTC4h 15m
2026-07-26 TVF41XT ORY → AYT Jul 26, 12:10 UTCJul 26, 15:35 UTC3h 25m
2026-07-26 TVF58RR TIV → ORY Jul 26, 08:45 UTCJul 26, 10:50 UTC2h 5m
2026-07-26 TVF96VG - Jul 26, 05:30 UTCJul 26, 07:25 UTC1h 56m
2026-07-25 TVF8939 MIR → ORY Jul 25, 17:10 UTCJul 25, 19:25 UTC2h 15m
2026-07-25 TVF8938 ORY → MIR Jul 25, 13:40 UTCJul 25, 15:20 UTC1h 40m
2026-07-25 TVF18UU CTA → ORY Jul 25, 09:40 UTCJul 25, 12:05 UTC2h 25m
2026-07-25 TVF43WX ORY → CTA Jul 25, 06:15 UTCJul 25, 08:15 UTC2h 0m
2026-07-24 TVF43MN ORY → ORY Jul 24, 13:45 UTCJul 24, 20:45 UTC7h 0m
2026-07-24 TVF92NS - Jul 24, 10:50 UTCJul 24, 12:20 UTC1h 30m
2026-07-24 TVF73DJ - Jul 24, 08:10 UTCJul 24, 09:35 UTC1h 25m
2026-07-24 TVF45BX - Jul 24, 04:55 UTCJul 24, 06:45 UTC1h 50m
2026-07-23 TVF97AM - Jul 23, 19:30 UTCJul 23, 21:05 UTC1h 35m
2026-07-23 TVF27QD - Jul 23, 15:35 UTCJul 23, 18:00 UTC2h 25m
2026-07-23 TVF49ES - Jul 23, 12:25 UTCJul 23, 14:20 UTC1h 55m
2026-07-23 TVF418N AGA → ORY Jul 23, 05:50 UTCJul 23, 08:15 UTC2h 25m
2026-07-22 TVF276D - Jul 22, 18:50 UTCJul 22, 21:40 UTC2h 50m
2026-07-22 TVF41HB - Jul 22, 13:45 UTCJul 22, 17:05 UTC3h 20m
2026-07-22 TVF59WT IST → ORY Jul 22, 04:05 UTCJul 22, 11:50 UTC7h 45m
2026-07-21 TVF539X - Jul 21, 17:35 UTCJul 21, 20:20 UTC2h 45m
2026-07-21 TVF80TB FNC → ORY Jul 21, 12:30 UTCJul 21, 15:30 UTC3h 0m
2026-07-21 TVF38CS - Jul 21, 11:10 UTCJul 21, 11:25 UTC15m
2026-07-21 TVF38CS - Jul 21, 08:00 UTCJul 21, 10:30 UTC2h 30m
2026-07-20 TVF6919 MIR → ORY Jul 20, 18:45 UTCJul 21, 06:35 UTC11h 49m
2026-07-20 TVF21EU OUD → ORY Jul 20, 13:50 UTCJul 20, 15:55 UTC2h 5m
2026-07-20 TVF99VC ORY → OUD Jul 20, 10:20 UTCJul 20, 12:45 UTC2h 25m
2026-07-20 TVF7929 EDI → ORY Jul 20, 07:25 UTCJul 20, 09:00 UTC1h 35m
2026-07-20 TVF58GB ORY → EDI Jul 20, 04:10 UTCJul 20, 05:40 UTC1h 30m
2026-07-19 TVF24HU ALC → ORY Jul 19, 16:00 UTCJul 19, 17:35 UTC1h 35m
2026-07-19 TVF25PB ORY → ALC Jul 19, 13:00 UTCJul 19, 14:50 UTC1h 50m
2026-07-19 TVF97QZ - Jul 19, 09:25 UTCJul 19, 11:35 UTC2h 10m
2026-07-19 TVF24KU - Jul 19, 06:05 UTCJul 19, 08:20 UTC2h 15m
2026-07-18 TVF35CT - Jul 18, 17:20 UTCJul 18, 21:25 UTC4h 5m
2026-07-18 TVF64SQ ORY → AYT Jul 18, 12:25 UTCJul 18, 15:45 UTC3h 20m
2026-07-18 TVF72XQ VLC → ORY Jul 18, 09:00 UTCJul 18, 10:30 UTC1h 30m
2026-07-18 TVF33QG ORY → VLC Jul 18, 05:50 UTCJul 18, 07:30 UTC1h 40m
2026-07-17 TVF6411 - Jul 17, 16:44 UTCJul 17, 19:20 UTC2h 35m
2026-07-17 TVF6410 - Jul 17, 12:45 UTCJul 17, 14:55 UTC2h 10m
2026-07-17 TVF94YU ORY → ORY Jul 17, 04:10 UTCJul 17, 11:20 UTC7h 10m
2026-07-16 TVF235L - Jul 16, 18:40 UTCJul 16, 19:55 UTC1h 15m
2026-07-16 TVF235L - Jul 16, 15:30 UTCJul 16, 18:34 UTC3h 5m
2026-07-16 TVF49MD - Jul 16, 10:04 UTCJul 16, 13:49 UTC3h 45m
2026-07-15 TVF276D ORY → ORY Jul 15, 18:25 UTCJul 16, 08:00 UTC13h 35m
2026-07-15 TVF41HB - Jul 15, 13:35 UTCJul 15, 17:05 UTC3h 30m
2026-07-15 TVF12ZW - Jul 15, 08:55 UTCJul 15, 11:40 UTC2h 45m
2026-07-14 TVF70XK - Jul 14, 15:05 UTCJul 14, 18:10 UTC3h 5m
2026-07-14 TVF93GW - Jul 14, 09:25 UTCJul 14, 13:30 UTC4h 5m
2026-07-12 TVF206H IBZ → ORY Jul 12, 19:20 UTCJul 12, 20:50 UTC1h 30m
2026-07-12 TVF20BT ORY → IBZ Jul 12, 16:35 UTCJul 12, 18:10 UTC1h 35m
2026-07-12 TVF783R ORY → ORY Jul 12, 08:01 UTCJul 12, 14:40 UTC6h 40m

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

Mode-S 39DE51 frequently asked

What is Mode-S code 39DE51?
39DE51 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HXSR.
Where is Mode-S 39DE51 registered?
Mode-S code 39DE51 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39DE51 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39DE51, octal 16357121, decimal 3,792,465.
What flights does 39DE51 operate?
Mode-S 39DE51 has broadcast 20 distinct callsigns, including TVF39PQ, TVF21CH, TVF59WT, TVF539X, TVF276D.