Apparatus

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sensors Mode-S transponder

4D2141

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-WZA · AIRBUS A-321

Hex
4D2141
Octal
23220501
Decimal
5,054,785
Country
MT
Tail
9H-WZA
Type
A321
No current signal · last broadcast 29d ago
Flights observed
336
Distinct callsigns
20
Country
MT
Last broadcast
29d ago

Last known position

Most recent position reported by Mode-S 4D2141.

Country allocation

The ICAO 24-bit address 4D2141 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
WMT5ST Wizz Air Malta 5 2026-05-27
WMT5HG - 5 2026-05-28
WMT588 - 5 2026-06-01
WMT4GW Wizz Air Malta 5 2026-05-27
WMT459 Wizz Air Malta 5 2026-05-28
WMT3456 - 5 2026-05-29
WMT33DE Wizz Air Malta 5 2026-06-14
WMT9AC Wizz Air Malta 4 2026-05-27
WMT932 - 4 2026-05-27
WMT8AH Wizz Air Malta 4 2026-05-29
WMT8585 - 4 2026-05-28
WMT755 - 4 2026-06-14
WMT7400 - 4 2026-06-13
WMT716 - 4 2026-05-29
WMT6320 - 4 2026-05-21
WMT626 - 4 2026-06-14
WMT5MR Wizz Air Malta 4 2026-05-28
WMT551 - 4 2026-05-28
WMT3EU Wizz Air Malta 4 2026-05-31
WMT2YP Wizz Air Malta 4 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-14 WZZ4KU BCN → BUD Jun 14, 20:15 UTCJun 14, 22:15 UTC2h 0m
2026-06-14 WMT33DE OTP → BCN Jun 14, 16:00 UTCJun 14, 18:55 UTC2h 55m
2026-06-14 WMT626 - Jun 14, 13:10 UTCJun 14, 14:45 UTC1h 35m
2026-06-14 WMT755 - Jun 14, 10:05 UTCJun 14, 11:55 UTC1h 50m
2026-06-14 WMT2166 - Jun 14, 07:30 UTCJun 14, 08:45 UTC1h 15m
2026-06-14 WMT485 VIE → ZTH Jun 14, 05:00 UTCJun 14, 06:20 UTC1h 20m
2026-06-13 WMT1WD TRF → OTP Jun 13, 18:50 UTCJun 13, 21:20 UTC2h 30m
2026-06-13 WMT7675 - Jun 13, 15:15 UTCJun 13, 17:50 UTC2h 35m
2026-06-13 WMT2WL - Jun 13, 10:40 UTCJun 13, 12:40 UTC2h 0m
2026-06-13 WMT8WL OTP → NCE Jun 13, 07:05 UTCJun 13, 09:20 UTC2h 15m
2026-06-13 WMT7400 - Jun 13, 05:10 UTCJun 13, 05:40 UTC30m
2026-06-13 WMT13DU - Jun 13, 03:35 UTCJun 13, 04:00 UTC24m
2026-06-12 WMT2S BCN → OTP Jun 12, 19:45 UTCJun 12, 22:25 UTC2h 40m
2026-06-12 WMT33DE OTP → BCN Jun 12, 15:30 UTCJun 12, 18:15 UTC2h 45m
2026-06-12 WMT626 SCV → BVA Jun 12, 12:35 UTCJun 12, 14:05 UTC1h 30m
2026-06-12 WMT755 TZL → DTM Jun 12, 09:40 UTCJun 12, 11:25 UTC1h 45m
2026-06-11 WMT1969 - Jun 11, 15:00 UTCJun 11, 17:10 UTC2h 10m
2026-06-11 WMT7VX - Jun 11, 11:25 UTCJun 11, 13:50 UTC2h 25m
2026-06-11 WMT546 - Jun 11, 07:35 UTCJun 11, 10:05 UTC2h 30m
2026-06-11 WMT3796 - Jun 11, 03:15 UTCJun 11, 06:15 UTC3h 0m
2026-06-10 WMT307 RMI → TIA Jun 10, 20:20 UTCJun 10, 22:00 UTC1h 40m
2026-06-10 WMT4XC - Jun 10, 17:20 UTCJun 10, 18:45 UTC1h 25m
2026-06-10 WMT8LL TRN → TIA Jun 10, 13:25 UTCJun 10, 14:45 UTC1h 20m
2026-06-10 WMT6LX TIA → TRN Jun 10, 10:30 UTCJun 10, 12:05 UTC1h 35m
2026-06-10 WMT3XC FMM → TIA Jun 10, 07:50 UTCJun 10, 09:05 UTC1h 15m
2026-06-10 WMT1RN TIA → FMM Jun 10, 05:20 UTCJun 10, 06:40 UTC1h 20m
2026-06-09 WMT5YY HAM → TIA Jun 9, 15:05 UTCJun 9, 17:40 UTC2h 35m
2026-06-09 WMT1XA TIA → HAM Jun 9, 11:55 UTCJun 9, 13:55 UTC2h 0m
2026-06-09 WMT3SH LYS → TIA Jun 9, 07:30 UTCJun 9, 09:00 UTC1h 30m
2026-06-09 WMT4YF TIA → LYS Jun 9, 04:20 UTCJun 9, 06:10 UTC1h 50m
2026-06-08 WMT466 FCO → OPO Jun 8, 19:20 UTCJun 8, 21:05 UTC1h 45m
2026-06-08 WMT7407 - Jun 8, 16:20 UTCJun 8, 18:20 UTC2h 0m
2026-06-08 WMT589 VCE → SCV Jun 8, 13:10 UTCJun 8, 14:50 UTC1h 40m
2026-06-08 WMT4783 - Jun 8, 09:40 UTCJun 8, 11:40 UTC2h 0m
2026-06-08 WMT5151 TIA → MAD Jun 8, 07:15 UTCJun 8, 08:00 UTC45m
2026-06-08 WMT3317 - Jun 8, 05:10 UTCJun 8, 06:00 UTC50m
2026-06-07 WMT994 CRL → IAS Jun 7, 20:15 UTCJun 7, 21:20 UTC1h 5m
2026-06-07 WMT4XC - Jun 7, 17:15 UTCJun 7, 18:40 UTC1h 25m
2026-06-07 WMT3XC FMM → TIA Jun 7, 13:10 UTCJun 7, 14:20 UTC1h 10m
2026-06-07 WMT458 - Jun 7, 10:50 UTCJun 7, 12:15 UTC1h 25m
2026-06-07 WMT5CB FMM → OHD Jun 7, 07:55 UTCJun 7, 09:10 UTC1h 15m
2026-06-07 WMT1RN TIA → FMM Jun 7, 05:20 UTCJun 7, 06:50 UTC1h 30m
2026-06-06 WMT5655 - Jun 6, 21:04 UTCJun 6, 22:44 UTC1h 40m
2026-06-06 WMT7SE TIA → BCN Jun 6, 17:29 UTCJun 6, 19:40 UTC2h 10m
2026-06-06 WMT425 - Jun 6, 11:39 UTCJun 6, 12:45 UTC1h 5m
2026-06-06 WMT2020 - Jun 6, 09:15 UTCJun 6, 10:39 UTC1h 25m
2026-06-06 WMT6AW BLQ → TIA Jun 6, 06:50 UTCJun 6, 07:40 UTC50m
2026-06-06 WMT848 SBZ → FCO Jun 6, 04:25 UTCJun 6, 05:35 UTC1h 10m
2026-06-05 WMT7CD GOA → TIA Jun 5, 19:00 UTCJun 5, 21:35 UTC2h 35m
2026-06-05 WMT745 - Jun 5, 15:25 UTCJun 5, 17:50 UTC2h 25m

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

Mode-S 4D2141 frequently asked

What is Mode-S code 4D2141?
4D2141 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-WZA.
Where is Mode-S 4D2141 registered?
Mode-S code 4D2141 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2141 broadcasting right now?
No active broadcast right now. Last signal was 29d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2141, octal 23220501, decimal 5,054,785.
What flights does 4D2141 operate?
Mode-S 4D2141 has broadcast 20 distinct callsigns, including WMT5ST, WMT5HG, WMT588, WMT4GW, WMT459.