sensors Mode-S transponder

39D312

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HUYS · BOEING 737-800

Hex
39D312
Octal
16351422
Decimal
3,789,586
Country
FR
Tail
F-HUYS
Type
B738
No current signal · last broadcast 8h ago
Flights observed
410
Distinct callsigns
20
Country
FR
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 39D312.

Country allocation

The ICAO 24-bit address 39D312 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
TVF93GW - 5 2026-06-30
TVF88YF - 5 2026-06-23
TVF78HX - 5 2026-07-12
TVF68PG - 5 2026-07-12
TVF414K - 5 2026-06-22
TVF15US - 5 2026-06-22
TVF55GZ - 4 2026-04-28
TVF38YC - 4 2026-06-22
TVF20NC - 4 2026-06-21
TVF97ZD - 3 2026-07-10
TVF88XB - 3 2026-06-15
TVF87AW - 3 2026-07-09
TVF82DG - 3 2026-07-08
TVF82CF - 3 2026-04-26
TVF78NH - 3 2026-06-15
TVF77LB - 3 2026-06-22
TVF70XK - 3 2026-04-14
TVF69EB - 3 2026-07-08
TVF64JU - 3 2026-07-13
TVF63AB - 3 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TVF91RT - Jul 14, 18:55 UTCJul 14, 21:20 UTC2h 25m
2026-07-14 TVF17XX - Jul 14, 15:25 UTCJul 14, 17:25 UTC2h 0m
2026-07-14 TVF70VW - Jul 14, 09:40 UTCJul 14, 13:15 UTC3h 35m
2026-07-14 TVF15TZ - Jul 14, 05:45 UTCJul 14, 08:35 UTC2h 50m
2026-07-13 TVF16VB TLS → ORY Jul 13, 18:50 UTCJul 13, 19:50 UTC1h 0m
2026-07-13 TVF64JU ORY → TLS Jul 13, 17:00 UTCJul 13, 17:55 UTC55m
2026-07-13 TVF40PY NCE → ORY Jul 13, 14:50 UTCJul 13, 16:00 UTC1h 10m
2026-07-13 TVF61RA ORY → NCE Jul 13, 11:55 UTCJul 13, 13:05 UTC1h 10m
2026-07-13 TVF96DA - Jul 13, 09:35 UTCJul 13, 10:35 UTC1h 0m
2026-07-13 TVF39XV - Jul 13, 07:20 UTCJul 13, 08:20 UTC1h 0m
2026-07-13 TVF39WB PGF → ORY Jul 13, 05:01 UTCJul 13, 06:05 UTC1h 5m
2026-07-12 TVF15PP ORY → PGF Jul 12, 18:35 UTCJul 12, 19:45 UTC1h 10m
2026-07-12 TVF16VB TLS → ORY Jul 12, 16:25 UTCJul 12, 17:20 UTC55m
2026-07-12 TVF64JU - Jul 12, 14:20 UTCJul 12, 15:15 UTC55m
2026-07-12 TVF74SU - Jul 12, 12:01 UTCJul 12, 13:01 UTC1h 0m
2026-07-12 TVF43KT - Jul 12, 09:40 UTCJul 12, 10:50 UTC1h 10m
2026-07-12 TVF78HX - Jul 12, 07:20 UTCJul 12, 08:30 UTC1h 10m
2026-07-12 TVF68PG ORY → NCE Jul 12, 05:15 UTCJul 12, 06:25 UTC1h 10m
2026-07-11 TVF37LL - Jul 11, 16:40 UTCJul 11, 19:55 UTC3h 15m
2026-07-11 TVF55ZP - Jul 11, 12:10 UTCJul 11, 15:10 UTC3h 0m
2026-07-11 TVF96DA - Jul 11, 09:35 UTCJul 11, 10:35 UTC1h 0m
2026-07-11 TVF39XV - Jul 11, 07:30 UTCJul 11, 08:25 UTC55m
2026-07-11 TVF61PZ NCE → ORY Jul 11, 04:50 UTCJul 11, 05:55 UTC1h 5m
2026-07-10 TVF35RF ORY → NCE Jul 10, 18:35 UTCJul 10, 19:55 UTC1h 20m
2026-07-10 TVF83YX - Jul 10, 16:10 UTCJul 10, 17:10 UTC1h 0m
2026-07-10 TVF51DF - Jul 10, 14:00 UTCJul 10, 15:00 UTC1h 0m
2026-07-10 TVF97ZD TLS → ORY Jul 10, 11:50 UTCJul 10, 12:45 UTC55m
2026-07-10 TVF54XS ORY → TLS Jul 10, 09:55 UTCJul 10, 10:50 UTC55m
2026-07-10 TVF78HX NCE → ORY Jul 10, 07:45 UTCJul 10, 08:55 UTC1h 10m
2026-07-10 TVF68PG ORY → NCE Jul 10, 05:25 UTCJul 10, 06:40 UTC1h 15m
2026-07-09 TVF206H IBZ → ORY Jul 9, 19:35 UTCJul 9, 21:05 UTC1h 30m
2026-07-09 TVF20BT ORY → IBZ Jul 9, 16:30 UTCJul 9, 18:15 UTC1h 45m
2026-07-09 TVF87AW OPO → ORY Jul 9, 13:15 UTCJul 9, 15:00 UTC1h 45m
2026-07-09 TVF22QL ORY → OPO Jul 9, 09:50 UTCJul 9, 11:40 UTC1h 50m
2026-07-09 TVF63AB OPO → ORY Jul 9, 06:30 UTCJul 9, 08:35 UTC2h 5m
2026-07-08 TVF18KQ ORY → OPO Jul 8, 19:05 UTCJul 8, 20:50 UTC1h 45m
2026-07-08 TVF67VV FAO → ORY Jul 8, 15:50 UTCJul 8, 17:50 UTC2h 0m
2026-07-08 TVF13YZ ORY → FAO Jul 8, 12:20 UTCJul 8, 14:35 UTC2h 15m
2026-07-08 TVF69EB - Jul 8, 08:45 UTCJul 8, 10:40 UTC1h 55m
2026-07-08 TVF82DG - Jul 8, 05:40 UTCJul 8, 07:10 UTC1h 30m
2026-07-07 TVF43MN ORY → ORY Jul 7, 13:55 UTCJul 7, 21:05 UTC7h 10m
2026-07-07 TVF35PS - Jul 7, 10:10 UTCJul 7, 11:15 UTC1h 5m
2026-07-07 TVF74VS - Jul 7, 08:00 UTCJul 7, 09:05 UTC1h 5m
2026-07-07 TVF39WB - Jul 7, 05:05 UTCJul 7, 06:25 UTC1h 20m
2026-07-06 TVF15PP - Jul 6, 19:45 UTCJul 6, 20:45 UTC1h 0m
2026-07-06 TVF15PP ORY → ORY Jul 6, 19:25 UTCJul 6, 19:30 UTC5m
2026-07-06 TVF83YX - Jul 6, 17:05 UTCJul 6, 18:10 UTC1h 5m
2026-07-06 TVF51DF - Jul 6, 14:45 UTCJul 6, 15:40 UTC55m
2026-07-06 TVF97ZD TLS → ORY Jul 6, 12:25 UTCJul 6, 13:30 UTC1h 5m
2026-07-06 TVF54XS ORY → TLS Jul 6, 10:30 UTCJul 6, 11:25 UTC55m

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

Mode-S 39D312 frequently asked

What is Mode-S code 39D312?
39D312 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HUYS.
Where is Mode-S 39D312 registered?
Mode-S code 39D312 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39D312 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39D312, octal 16351422, decimal 3,789,586.
What flights does 39D312 operate?
Mode-S 39D312 has broadcast 20 distinct callsigns, including TVF93GW, TVF88YF, TVF78HX, TVF68PG, TVF414K.