Apparatus

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sensors Mode-S transponder

4D2090

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-WME · AIRBUS A-321neo

Hex
4D2090
Octal
23220220
Decimal
5,054,608
Country
MT
Tail
9H-WME
Type
A21N
Broadcasting now · callsign WMT6CS · 14,625 ft
Flights observed
563
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 22:00 UTC

Current position

4D2090 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4D2090 falls within the block assigned to Malta (MT) by ICAO Annex 10, Volume III. Every aircraft registered in Malta 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
WMT537 - 9 2026-07-22
WMT511 - 9 2026-07-22
WMT68LU - 6 2026-07-19
WMT4LN - 6 2026-06-24
WMT2283 - 6 2026-06-24
WMT1BH - 6 2026-07-19
WMT8JT - 5 2026-07-26
WMT8BJ - 5 2026-07-12
WMT7653 - 5 2026-06-23
WMT6753 - 5 2026-07-26
WMT4DW - 5 2026-07-22
WMT463 - 5 2026-07-22
WMT2684 - 5 2026-07-23
WMT1GS - 5 2026-06-01
WMT1400 - 5 2026-06-23
WZZ948 Wizz Air 4 2026-05-10
WZZ4NM - 4 2026-05-11
WZZ337 - 4 2026-04-13
WMT9706 - 4 2026-07-25
WMT9602 - 4 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WMT728 - Jul 26, 21:25 UTCJul 26, 22:00 UTC35m
2026-07-26 WMT2DH - Jul 26, 18:35 UTCJul 26, 19:55 UTC1h 20m
2026-07-26 WMT631 - Jul 26, 15:25 UTCJul 26, 17:10 UTC1h 45m
2026-07-26 WMT9602 - Jul 26, 12:10 UTCJul 26, 14:00 UTC1h 50m
2026-07-26 WMT6753 - Jul 26, 08:25 UTCJul 26, 10:50 UTC2h 25m
2026-07-26 WMT8JT - Jul 26, 04:45 UTCJul 26, 07:15 UTC2h 31m
2026-07-25 WMT9706 - Jul 25, 22:40 UTCJul 25, 23:45 UTC1h 5m
2026-07-25 WMT5089 - Jul 25, 19:10 UTCJul 25, 20:40 UTC1h 30m
2026-07-25 WMT5682 - Jul 25, 16:35 UTCJul 25, 17:40 UTC1h 5m
2026-07-25 WMT499 DTM → OTP Jul 25, 14:30 UTCJul 25, 15:30 UTC1h 0m
2026-07-25 WMT8TG - Jul 25, 11:50 UTCJul 25, 13:00 UTC1h 10m
2026-07-25 WMT372 - Jul 25, 09:55 UTCJul 25, 10:50 UTC55m
2026-07-25 WMT4180 - Jul 25, 06:45 UTCJul 25, 08:10 UTC1h 25m
2026-07-25 WMT6191 - Jul 25, 04:20 UTCJul 25, 05:30 UTC1h 10m
2026-07-24 WMT1488 IBZ → FCO Jul 24, 23:15 UTCJul 25, 00:30 UTC1h 15m
2026-07-24 WMT8077 - Jul 24, 20:30 UTCJul 24, 22:00 UTC1h 30m
2026-07-24 WMT6CS - Jul 24, 18:00 UTCJul 24, 19:05 UTC1h 5m
2026-07-24 WMT7VK - Jul 24, 15:40 UTCJul 24, 16:30 UTC50m
2026-07-24 WMT4GH - Jul 24, 08:40 UTCJul 24, 12:05 UTC3h 25m
2026-07-24 WMT7705 - Jul 24, 04:00 UTCJul 24, 06:45 UTC2h 45m
2026-07-23 WMT878 FMM → OHD Jul 23, 21:00 UTCJul 23, 22:55 UTC1h 55m
2026-07-23 WMT4SG - Jul 23, 18:40 UTCJul 23, 20:10 UTC1h 30m
2026-07-23 WMT8VQ LTN → FCO Jul 23, 15:10 UTCJul 23, 17:05 UTC1h 55m
2026-07-23 WMT1WA FCO → LTN Jul 23, 11:30 UTCJul 23, 14:00 UTC2h 30m
2026-07-23 WMT2684 - Jul 23, 07:50 UTCJul 23, 09:40 UTC1h 50m
2026-07-23 WMT7SN FMM → CLJ Jul 23, 04:20 UTCJul 23, 06:20 UTC2h 0m
2026-07-22 WMT511 LIS → FCO Jul 22, 22:30 UTCJul 23, 00:45 UTC2h 15m
2026-07-22 WMT537 - Jul 22, 16:40 UTCJul 22, 19:45 UTC3h 5m
2026-07-22 WMT463 - Jul 22, 13:35 UTCJul 22, 15:00 UTC1h 25m
2026-07-22 WMT4DW - Jul 22, 11:10 UTCJul 22, 12:30 UTC1h 20m
2026-07-22 WMT8812 - Jul 22, 04:00 UTCJul 22, 05:25 UTC1h 25m
2026-07-21 WMT9706 - Jul 21, 21:50 UTCJul 21, 22:55 UTC1h 5m
2026-07-21 WMT5089 - Jul 21, 19:15 UTCJul 21, 20:35 UTC1h 20m
2026-07-21 WMT5682 - Jul 21, 16:50 UTCJul 21, 18:00 UTC1h 10m
2026-07-21 WMT499 - Jul 21, 14:50 UTCJul 21, 15:55 UTC1h 5m
2026-07-21 WMT8TG - Jul 21, 12:25 UTCJul 21, 13:35 UTC1h 10m
2026-07-21 WMT372 - Jul 21, 10:15 UTCJul 21, 11:25 UTC1h 10m
2026-07-21 WMT8AT - Jul 21, 06:50 UTCJul 21, 08:30 UTC1h 40m
2026-07-21 WMT24GD - Jul 21, 04:20 UTCJul 21, 05:40 UTC1h 20m
2026-07-20 WMT9706 - Jul 20, 21:40 UTCJul 20, 22:50 UTC1h 10m
2026-07-20 WMT5089 - Jul 20, 19:20 UTCJul 20, 20:40 UTC1h 20m
2026-07-20 WMT5682 - Jul 20, 17:10 UTCJul 20, 18:20 UTC1h 10m
2026-07-20 WMT499 - Jul 20, 15:10 UTCJul 20, 16:15 UTC1h 5m
2026-07-20 WMT8TG - Jul 20, 11:50 UTCJul 20, 13:05 UTC1h 15m
2026-07-20 WMT372 - Jul 20, 09:55 UTCJul 20, 11:00 UTC1h 5m
2026-07-20 WMT6ZK - Jul 20, 06:50 UTCJul 20, 08:10 UTC1h 20m
2026-07-20 WMT3EC LTN → OTP Jul 20, 03:45 UTCJul 20, 04:55 UTC1h 10m
2026-07-19 WMT16PT - Jul 19, 21:10 UTCJul 19, 23:00 UTC1h 50m
2026-07-19 WMT49HL - Jul 19, 18:25 UTCJul 19, 20:05 UTC1h 40m
2026-07-19 WMT6969 - Jul 19, 15:25 UTCJul 19, 17:15 UTC1h 50m

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 9H-WME page for operator, model, and routing details .

Mode-S 4D2090 frequently asked

What is Mode-S code 4D2090?
4D2090 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-WME.
Where is Mode-S 4D2090 registered?
Mode-S code 4D2090 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2090 broadcasting right now?
Yes. Mode-S 4D2090 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2090, octal 23220220, decimal 5,054,608.
What flights does 4D2090 operate?
Mode-S 4D2090 has broadcast 20 distinct callsigns, including WMT537, WMT511, WMT68LU, WMT4LN, WMT2283.