Apparatus

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sensors Mode-S transponder

4D012E

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-LCL · BOEING 747-400

Hex
4D012E
Octal
23200456
Decimal
5,046,574
Country
LU
Tail
LX-LCL
Type
B744
No current signal · last broadcast 18h ago
Flights observed
192
Distinct callsigns
20
Country
LU
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4D012E.

Country allocation

The ICAO 24-bit address 4D012E 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
CLX6822 Cargolux 11 2026-06-17
CLX56 - 10 2026-06-28
CLX86N Cargolux 9 2026-06-18
CLX32 - 8 2026-06-07
CLX6232 Cargolux 7 2026-06-16
CLX6221 Cargolux 7 2026-06-15
CLX79 - 6 2026-07-11
CLX6823 Cargolux 6 2026-06-17
CLX48 - 6 2026-06-07
CLX43 - 6 2026-07-02
CLX17 - 6 2026-07-03
CLX6 - 5 2026-07-12
CLX9726 - 4 2026-06-27
CLX91W Cargolux 4 2026-06-02
CLX7334 Cargolux 4 2026-06-20
CLX9872 Cargolux 3 2026-05-20
CLX9725 - 3 2026-07-10
CLX92 - 3 2026-06-22
CLX7623 Cargolux 3 2026-06-04
CLX708 - 3 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CLX72W - Jul 13, 14:30 UTCJul 13, 15:25 UTC55m
2026-07-13 CLX72W ATL → STN Jul 13, 04:55 UTCJul 13, 12:50 UTC7h 55m
2026-07-12 CLX6 - Jul 12, 15:45 UTCJul 13, 00:25 UTC8h 40m
2026-07-12 CLX98V DFW → LUX Jul 12, 03:55 UTCJul 12, 13:01 UTC9h 5m
2026-07-11 CLX78Y ORD → DFW Jul 11, 23:20 UTCJul 12, 01:05 UTC1h 45m
2026-07-11 CLX78Y - Jul 11, 12:05 UTCJul 11, 20:25 UTC8h 20m
2026-07-11 CLX79 - Jul 11, 03:50 UTCJul 11, 08:25 UTC4h 35m
2026-07-10 CLX79 - Jul 10, 07:35 UTCJul 11, 07:30 UTC23h 55m
2026-07-10 CLX9725 - Jul 10, 05:35 UTCJul 11, 05:15 UTC23h 40m
2026-07-09 CLX34P ATL → LUX Jul 9, 12:35 UTCJul 9, 20:35 UTC8h 0m
2026-07-09 CLX6 MIA → ATL Jul 9, 07:30 UTCJul 9, 08:55 UTC1h 25m
2026-07-08 CLX6 - Jul 8, 20:50 UTCJul 9, 06:00 UTC9h 10m
2026-07-08 CLX6083 - Jul 8, 07:55 UTCJul 8, 18:15 UTC10h 20m
2026-07-07 CLX6082 - Jul 7, 23:35 UTCJul 8, 05:15 UTC5h 40m
2026-07-07 CLX44D - Jul 7, 09:50 UTCJul 7, 21:10 UTC11h 20m
2026-07-03 CLX17 - Jul 3, 20:55 UTCJul 4, 10:40 UTC13h 45m
2026-07-03 CLX17 - Jul 3, 13:45 UTCJul 4, 10:40 UTC20h 55m
2026-07-02 CLX43 - Jul 2, 23:35 UTCJul 3, 21:20 UTC21h 45m
2026-07-02 CLX43 - Jul 2, 21:35 UTCJul 3, 21:20 UTC23h 45m
2026-07-02 CLX43 - Jul 2, 21:15 UTCJul 3, 14:15 UTC17h 0m
2026-07-02 CLX63A SEA → LUX Jul 2, 06:30 UTCJul 2, 15:25 UTC8h 55m
2026-07-02 CLX3 - Jul 2, 01:45 UTCJul 2, 03:55 UTC2h 10m
2026-07-01 CLX3 - Jul 1, 11:30 UTCJul 1, 22:30 UTC11h 0m
2026-06-29 CLX6697 - Jun 29, 01:29 UTCJun 29, 14:54 UTC13h 25m
2026-06-28 CLX6687 - Jun 28, 11:14 UTCJun 28, 22:10 UTC10h 55m
2026-06-28 CLX56 - Jun 28, 04:05 UTCJun 28, 08:14 UTC4h 10m
2026-06-27 CLX56 - Jun 27, 09:34 UTCJun 28, 08:14 UTC22h 40m
2026-06-27 CLX56 - Jun 27, 07:34 UTCJun 28, 07:29 UTC23h 55m
2026-06-27 CLX9726 - Jun 27, 05:59 UTCJun 28, 05:24 UTC23h 25m
2026-06-26 CLX23K IAH → LUX Jun 26, 13:34 UTCJun 26, 21:59 UTC8h 25m
2026-06-26 CLX6694 - Jun 26, 06:39 UTCJun 26, 11:05 UTC4h 25m
2026-06-25 CLX6684 MEX → GDL Jun 25, 11:59 UTCJun 25, 23:05 UTC11h 5m
2026-06-24 CLX515 BUD → LUX Jun 24, 17:40 UTCJun 24, 19:00 UTC1h 20m
2026-06-24 CLX515 - Jun 24, 12:14 UTCJun 24, 15:24 UTC3h 10m
2026-06-24 CLX515 - Jun 24, 02:20 UTCJun 24, 02:34 UTC15m
2026-06-23 CLX9932 DWC → LUX Jun 23, 12:20 UTCJun 23, 14:55 UTC2h 35m
2026-06-22 CLX92 - Jun 22, 10:30 UTCJun 22, 11:19 UTC50m
2026-06-22 CLX92 - Jun 22, 03:30 UTCJun 22, 08:29 UTC5h 0m
2026-06-21 CLX92 - Jun 21, 07:55 UTCJun 22, 07:30 UTC23h 35m
2026-06-21 CLX9727 LUX → CGO Jun 21, 05:35 UTCJun 22, 04:44 UTC23h 10m
2026-06-21 CLX9727 LUX → CGO Jun 21, 04:20 UTCJun 22, 03:30 UTC23h 10m
2026-06-20 CLX352 BUD → LUX Jun 20, 21:00 UTCJun 20, 22:20 UTC1h 20m
2026-06-20 CLX352 BUD → LUX Jun 20, 15:39 UTCJun 20, 18:59 UTC3h 20m
2026-06-20 CLX352 BUD → LUX Jun 20, 05:29 UTCJun 20, 05:44 UTC15m
2026-06-20 CLX7334 DWC → CGK Jun 20, 02:24 UTCJun 20, 02:59 UTC35m
2026-06-19 CLX7334 DWC → CGK Jun 19, 23:39 UTCJun 19, 23:49 UTC10m
2026-06-19 CLX7334 DWC → CGK Jun 19, 19:25 UTCJun 19, 21:24 UTC2h 0m
2026-06-19 CLX7334 DWC → CGK Jun 19, 04:04 UTCJun 19, 17:14 UTC13h 10m
2026-06-18 CLX86N MIA → AMS Jun 18, 15:30 UTCJun 18, 16:10 UTC40m
2026-06-18 CLX86N MIA → AMS Jun 18, 05:00 UTCJun 18, 12:55 UTC7h 55m

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

Mode-S 4D012E frequently asked

What is Mode-S code 4D012E?
4D012E is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-LCL.
Where is Mode-S 4D012E registered?
Mode-S code 4D012E is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D012E broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D012E, octal 23200456, decimal 5,046,574.
What flights does 4D012E operate?
Mode-S 4D012E has broadcast 20 distinct callsigns, including CLX6822, CLX56, CLX86N, CLX32, CLX6232.