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 Jul 26, 21:35 UTC
Flights observed
219
Distinct callsigns
20
Country
LU
Last broadcast
Jul 26, 21:35 UTC

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
CLX56 - 9 2026-07-19
CLX79 - 8 2026-06-02
CLX4951 - 7 2026-06-22
CLX81T - 6 2026-07-05
CLX7855 Cargolux 6 2026-06-20
CLX515 - 6 2026-05-27
CLX2 - 6 2026-06-18
CLX8 - 5 2026-07-26
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
CLX6 - 4 2026-07-19
CLX53V Cargolux 4 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CLX8 - Jul 26, 19:35 UTCJul 26, 21:35 UTC2h 0m
2026-07-26 CLX8 - Jul 26, 08:45 UTCJul 26, 17:40 UTC8h 55m
2026-07-25 CLX309 - Jul 25, 23:45 UTCJul 26, 04:05 UTC4h 20m
2026-07-25 CLX309 - Jul 25, 11:40 UTCJul 25, 11:55 UTC15m
2026-07-25 CLX9935 DMM → HKG Jul 25, 07:15 UTCJul 25, 07:45 UTC30m
2026-07-24 CLX9935 DMM → HKG Jul 24, 20:40 UTCJul 24, 23:05 UTC2h 25m
2026-07-24 CLX53V JFK → LUX Jul 24, 09:35 UTCJul 24, 16:50 UTC7h 15m
2026-07-24 CLX53V JFK → LUX Jul 24, 01:45 UTCJul 24, 06:45 UTC5h 0m
2026-07-23 CLX5904 HAN → ANC Jul 23, 17:05 UTCJul 24, 00:15 UTC7h 10m
2026-07-23 CLX5904 HAN → ANC Jul 23, 14:10 UTCJul 23, 14:20 UTC10m
2026-07-22 CLX4803 - Jul 22, 19:55 UTCJul 23, 06:10 UTC10h 15m
2026-07-22 CLX2092 HKG → ANC Jul 22, 03:40 UTCJul 22, 12:40 UTC9h 0m
2026-07-21 CLX2092 HKG → ANC Jul 21, 18:30 UTCJul 22, 01:30 UTC7h 0m
2026-07-21 CLX2092 HKG → ANC Jul 21, 07:40 UTCJul 21, 16:55 UTC9h 15m
2026-07-20 CLX1081 LUX → HKG Jul 20, 17:25 UTCJul 21, 04:40 UTC11h 15m
2026-07-20 CLX72W PIK → LUX Jul 20, 06:30 UTCJul 20, 14:40 UTC8h 10m
2026-07-19 CLX6 - Jul 19, 17:35 UTCJul 20, 02:30 UTC8h 55m
2026-07-19 CLX56 - Jul 19, 02:50 UTCJul 19, 07:20 UTC4h 30m
2026-07-18 CLX56 - Jul 18, 08:20 UTCJul 19, 07:20 UTC23h 0m
2026-07-18 CLX56 - Jul 18, 06:20 UTCJul 19, 06:15 UTC23h 55m
2026-07-18 CLX9726 LUX → CGO Jul 18, 04:40 UTCJul 19, 04:15 UTC23h 35m
2026-07-17 CLX53V JFK → LUX Jul 17, 09:40 UTCJul 17, 17:25 UTC7h 45m
2026-07-17 CLX53V JFK → LUX Jul 17, 01:35 UTCJul 17, 06:40 UTC5h 5m
2026-07-16 CLX5904 HAN → ANC Jul 16, 16:25 UTCJul 17, 00:04 UTC7h 40m
2026-07-15 CLX4803 - Jul 15, 21:25 UTCJul 16, 08:05 UTC10h 40m
2026-07-15 CLX5933 - Jul 15, 09:05 UTCJul 15, 19:20 UTC10h 15m
2026-07-14 CLX5932 - Jul 14, 20:30 UTCJul 15, 01:25 UTC4h 54m
2026-07-14 CLX237 HKG → ANC Jul 14, 09:05 UTCJul 14, 19:10 UTC10h 5m
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

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 Jul 26, 21:35 UTC.
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, CLX56, CLX79, CLX4951.