Apparatus

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sensors Mode-S transponder

4D0119

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-JCV · BOEING 747-400

Hex
4D0119
Octal
23200431
Decimal
5,046,553
Country
LU
Tail
LX-JCV
Type
B744
No current signal · last broadcast 31m ago
Flights observed
191
Distinct callsigns
20
Country
LU
Last broadcast
31m ago

Last known position

Most recent position reported by Mode-S 4D0119.

Country allocation

The ICAO 24-bit address 4D0119 falls within the block assigned to Luxembourg (LU) by ICAO Annex 10, Volume III. Every aircraft registered in Luxembourg 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
CLX91W Cargolux 12 2026-06-24
CLX708 - 10 2026-06-21
CLX79 - 8 2026-06-02
CLX4951 - 7 2026-06-22
CLX81T - 6 2026-07-05
CLX7855 Cargolux 6 2026-06-20
CLX56 - 6 2026-06-15
CLX515 - 6 2026-05-27
CLX2 - 6 2026-06-18
CLX5952 Cargolux 5 2026-06-23
CLX97C Cargolux 4 2026-05-07
CLX9725 Cargolux 4 2026-05-08
CLX9 - 4 2026-07-10
CLX7751 - 4 2026-07-07
CLX7 - 4 2026-05-07
CLX67 Cargolux 4 2026-05-18
CLX65 - 4 2026-05-31
CLX5 - 4 2026-05-28
CLX32 - 4 2026-07-01
CLX8 - 3 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CLX4971 - Jul 13, 18:55 UTCJul 14, 06:15 UTC11h 20m
2026-07-13 CLX915 - Jul 13, 08:55 UTCJul 13, 13:20 UTC4h 25m
2026-07-12 CLX915 - Jul 12, 23:35 UTCJul 12, 23:55 UTC20m
2026-07-12 CLX7956 - Jul 12, 15:05 UTCJul 12, 15:45 UTC40m
2026-07-12 CLX7956 - Jul 12, 14:15 UTCJul 12, 14:25 UTC10m
2026-07-11 CLX7956 - Jul 11, 20:00 UTCJul 12, 09:40 UTC13h 40m
2026-07-11 CLX14W LAX → LUX Jul 11, 06:50 UTCJul 11, 17:00 UTC10h 10m
2026-07-10 CLX9 - Jul 10, 16:25 UTCJul 11, 03:20 UTC10h 56m
2026-07-09 CLX82 - Jul 9, 05:25 UTCJul 9, 19:40 UTC14h 15m
2026-07-08 CLX873 - Jul 8, 14:35 UTCJul 9, 02:45 UTC12h 10m
2026-07-08 CLX63 - Jul 8, 06:00 UTCJul 8, 10:40 UTC4h 40m
2026-07-07 CLX7751 - Jul 7, 06:20 UTCJul 8, 06:15 UTC23h 55m
2026-07-07 CLX7751 - Jul 7, 04:35 UTCJul 7, 07:05 UTC2h 30m
2026-07-06 CLX72W ATL → LUX Jul 6, 11:30 UTCJul 6, 19:40 UTC8h 10m
2026-07-05 CLX6 - Jul 5, 14:30 UTCJul 6, 00:00 UTC9h 30m
2026-07-05 CLX81T AMS → LUX Jul 5, 10:55 UTCJul 5, 11:30 UTC35m
2026-07-05 CLX81T - Jul 5, 00:20 UTCJul 5, 08:20 UTC8h 0m
2026-07-04 CLX6236 - Jul 4, 10:10 UTCJul 4, 21:15 UTC11h 5m
2026-07-03 CLX6225 - Jul 3, 20:00 UTCJul 4, 07:05 UTC11h 5m
2026-07-03 CLX75V ATL → LUX Jul 3, 08:10 UTCJul 3, 16:00 UTC7h 50m
2026-07-03 CLX8 - Jul 3, 03:55 UTCJul 3, 05:10 UTC1h 15m
2026-07-03 CLX8 - Jul 3, 02:15 UTCJul 3, 02:25 UTC10m
2026-07-02 CLX8 - Jul 2, 15:20 UTCJul 3, 00:00 UTC8h 40m
2026-07-01 CLX32 - Jul 1, 18:40 UTCJul 2, 08:05 UTC13h 25m
2026-07-01 CLX32 - Jul 1, 11:10 UTCJul 2, 08:05 UTC20h 55m
2026-07-01 CLX9872 - Jul 1, 03:05 UTCJul 1, 19:05 UTC16h 0m
2026-06-30 CLX9872 - Jun 30, 21:55 UTCJul 1, 00:35 UTC2h 40m
2026-06-30 CLX6232 - Jun 30, 01:25 UTCJun 30, 12:15 UTC10h 51m
2026-06-29 CLX6221 - Jun 29, 12:05 UTCJun 29, 23:05 UTC11h 0m
2026-06-28 CLX48 - Jun 28, 18:44 UTCJun 29, 07:34 UTC12h 50m
2026-06-28 CLX48 - Jun 28, 11:19 UTCJun 29, 07:34 UTC20h 15m
2026-06-28 CLX9876 - Jun 28, 01:19 UTCJun 28, 18:55 UTC17h 35m
2026-06-27 CLX32 - Jun 27, 22:20 UTCJun 28, 18:55 UTC20h 35m
2026-06-27 CLX32 - Jun 27, 21:40 UTCJun 28, 18:55 UTC21h 15m
2026-06-27 CLX14W - Jun 27, 07:34 UTCJun 27, 17:55 UTC10h 20m
2026-06-26 CLX9 - Jun 26, 17:04 UTCJun 27, 04:09 UTC11h 5m
2026-06-25 CLX34P ATL → LUX Jun 25, 10:35 UTCJun 25, 18:10 UTC7h 35m
2026-06-25 CLX6 - Jun 25, 06:09 UTCJun 25, 07:30 UTC1h 20m
2026-06-24 CLX6 - Jun 24, 19:24 UTCJun 25, 04:25 UTC9h 0m
2026-06-24 CLX91W ANC → ORD Jun 24, 06:04 UTCJun 24, 14:45 UTC8h 40m
2026-06-24 CLX91W ANC → ORD Jun 24, 01:55 UTCJun 24, 03:44 UTC1h 50m
2026-06-23 CLX91W ANC → ORD Jun 23, 17:30 UTCJun 23, 22:44 UTC5h 15m
2026-06-23 CLX5952 NLU → LUX Jun 23, 04:29 UTCJun 23, 15:55 UTC11h 25m
2026-06-22 CLX4951 - Jun 22, 11:30 UTCJun 22, 21:54 UTC10h 25m
2026-06-21 CLX708 - Jun 21, 18:00 UTCJun 21, 18:14 UTC15m
2026-06-21 CLX708 - Jun 21, 14:30 UTCJun 21, 15:54 UTC1h 25m
2026-06-21 CLX708 - Jun 21, 09:35 UTCJun 21, 12:44 UTC3h 10m
2026-06-21 CLX708 - Jun 21, 00:04 UTCJun 21, 00:25 UTC20m
2026-06-20 CLX7855 SGN → HKG Jun 20, 21:25 UTCJun 20, 21:44 UTC20m
2026-06-20 CLX7855 SGN → HKG Jun 20, 04:04 UTCJun 20, 15:09 UTC11h 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 LX-JCV page for operator, model, and routing details .

Mode-S 4D0119 frequently asked

What is Mode-S code 4D0119?
4D0119 is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-JCV.
Where is Mode-S 4D0119 registered?
Mode-S code 4D0119 is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D0119 broadcasting right now?
No active broadcast right now. Last signal was 31m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D0119, octal 23200431, decimal 5,046,553.
What flights does 4D0119 operate?
Mode-S 4D0119 has broadcast 20 distinct callsigns, including CLX91W, CLX708, CLX79, CLX4951, CLX81T.