Apparatus

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sensors Mode-S transponder

4D021D

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-ZED · BOMBARDIER CL-600 Challenger

Hex
4D021D
Octal
23201035
Decimal
5,046,813
Country
LU
Tail
LX-ZED
Type
CL60
No current signal · last broadcast 1d ago
Flights observed
95
Distinct callsigns
1
Country
LU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4D021D.

Country allocation

The ICAO 24-bit address 4D021D 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 1 distinct

Callsign Airline Flights Last seen
SVW74VI - 95 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 SVW74VI - Jul 16, 17:20 UTCJul 16, 18:55 UTC1h 35m
2026-07-14 SVW74VI VLC → MAD Jul 14, 16:35 UTCJul 14, 17:20 UTC45m
2026-07-14 SVW74VI - Jul 14, 06:55 UTCJul 14, 08:20 UTC1h 25m
2026-07-13 SVW74VI - Jul 13, 12:05 UTCJul 13, 13:45 UTC1h 40m
2026-07-13 SVW74VI - Jul 13, 09:45 UTCJul 13, 10:45 UTC1h 0m
2026-07-11 SVW74VI - Jul 11, 16:45 UTCJul 11, 17:45 UTC1h 0m
2026-07-11 SVW74VI - Jul 11, 12:05 UTCJul 11, 13:10 UTC1h 5m
2026-07-10 SVW74VI - Jul 10, 13:45 UTCJul 10, 14:40 UTC55m
2026-07-10 SVW74VI - Jul 10, 10:45 UTCJul 10, 11:40 UTC55m
2026-07-09 SVW74VI - Jul 9, 18:05 UTCJul 9, 19:45 UTC1h 40m
2026-07-09 SVW74VI - Jul 9, 14:55 UTCJul 9, 16:40 UTC1h 45m
2026-07-08 SVW74VI - Jul 8, 16:50 UTCJul 8, 18:15 UTC1h 25m
2026-07-08 SVW74VI - Jul 8, 08:40 UTCJul 8, 09:35 UTC55m
2026-07-07 SVW74VI - Jul 7, 15:10 UTCJul 7, 16:05 UTC55m
2026-07-07 SVW74VI - Jul 7, 13:00 UTCJul 7, 13:40 UTC40m
2026-07-07 SVW74VI - Jul 7, 10:25 UTCJul 7, 11:45 UTC1h 20m
2026-07-06 SVW74VI - Jul 6, 15:40 UTCJul 6, 16:35 UTC55m
2026-07-04 SVW74VI LIN → NCE Jul 4, 09:35 UTCJul 4, 10:20 UTC45m
2026-07-03 SVW74VI - Jul 3, 14:25 UTCJul 3, 14:55 UTC30m
2026-07-03 SVW74VI - Jul 3, 11:20 UTCJul 3, 11:55 UTC35m
2026-07-03 SVW74VI - Jul 3, 08:10 UTCJul 3, 09:05 UTC55m
2026-07-02 SVW74VI - Jul 2, 17:00 UTCJul 2, 19:30 UTC2h 30m
2026-07-01 SVW74VI - Jul 1, 15:20 UTCJul 1, 17:45 UTC2h 25m
2026-07-01 SVW74VI - Jul 1, 11:15 UTCJul 1, 12:30 UTC1h 15m
2026-07-01 SVW74VI LIN → NCE Jul 1, 09:00 UTCJul 1, 09:50 UTC50m
2026-06-30 SVW74VI - Jun 30, 14:40 UTCJun 30, 15:50 UTC1h 10m
2026-06-30 SVW74VI - Jun 30, 12:30 UTCJun 30, 13:25 UTC55m
2026-06-30 SVW74VI NCE → NHT Jun 30, 08:35 UTCJun 30, 10:15 UTC1h 40m
2026-06-28 SVW74VI BMA → NCE Jun 28, 10:44 UTCJun 28, 13:45 UTC3h 0m
2026-06-25 SVW74VI ZRH → BMA Jun 25, 09:14 UTCJun 25, 11:19 UTC2h 5m
2026-06-25 SVW74VI - Jun 25, 06:09 UTCJun 25, 07:00 UTC50m
2026-06-23 SVW74VI - Jun 23, 23:00 UTCJun 24, 00:05 UTC1h 5m
2026-06-23 SVW74VI - Jun 23, 18:39 UTCJun 23, 19:44 UTC1h 5m
2026-06-23 SVW74VI ZRH → NCE Jun 23, 13:55 UTCJun 23, 14:49 UTC55m
2026-06-21 SVW74VI VIE → ZRH Jun 21, 09:29 UTCJun 21, 10:34 UTC1h 5m
2026-06-18 SVW74VI ZRH → VIE Jun 18, 09:25 UTCJun 18, 10:25 UTC1h 0m
2026-06-16 SVW74VI - Jun 16, 09:15 UTCJun 16, 10:30 UTC1h 15m
2026-06-15 SVW74VI - Jun 15, 14:05 UTCJun 15, 14:24 UTC20m
2026-06-15 SVW74VI - Jun 15, 10:00 UTCJun 15, 11:54 UTC1h 55m
2026-06-15 SVW74VI BRN → NCE Jun 15, 07:25 UTCJun 15, 08:15 UTC50m
2026-06-14 SVW74VI - Jun 14, 16:05 UTCJun 14, 16:50 UTC45m
2026-06-12 SVW74VI - Jun 12, 11:40 UTCJun 12, 12:00 UTC20m
2026-06-12 SVW74VI - Jun 12, 07:45 UTCJun 12, 08:30 UTC45m
2026-06-11 SVW74VI - Jun 11, 15:10 UTCJun 11, 16:20 UTC1h 10m
2026-06-11 SVW74VI - Jun 11, 07:10 UTCJun 11, 08:35 UTC1h 25m
2026-06-10 SVW74VI - Jun 10, 13:35 UTCJun 10, 14:00 UTC25m
2026-06-10 SVW74VI - Jun 10, 11:55 UTCJun 10, 12:35 UTC40m
2026-06-10 SVW74VI - Jun 10, 08:35 UTCJun 10, 10:30 UTC1h 55m
2026-06-09 SVW74VI - Jun 9, 09:10 UTCJun 9, 10:55 UTC1h 45m
2026-06-08 SVW74VI - Jun 8, 16:10 UTCJun 8, 17:45 UTC1h 35m

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

Mode-S 4D021D frequently asked

What is Mode-S code 4D021D?
4D021D is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-ZED.
Where is Mode-S 4D021D registered?
Mode-S code 4D021D is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D021D broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D021D, octal 23201035, decimal 5,046,813.
What flights does 4D021D operate?
Mode-S 4D021D has broadcast 1 distinct callsign, including SVW74VI.