Apparatus

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sensors Mode-S transponder

4D2146

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-IJK · BOMBARDIER CL-600 Challenger

Hex
4D2146
Octal
23220506
Decimal
5,054,790
Country
MT
Tail
9H-IJK
Type
CL60
Broadcasting now · callsign WMT57XA · 35,975 ft
Flights observed
499
Distinct callsigns
20
Country
MT
Last broadcast
1h ago

Current position

4D2146 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4D2146 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
WMT7866 Wizz Air Malta 8 2026-04-18
WMT5ST - 7 2026-07-11
WMT565 - 7 2026-07-12
WMT4GW - 7 2026-07-11
WMT9XU - 6 2026-07-12
WMT755 - 6 2026-07-03
WMT626 - 6 2026-07-03
WMT485 - 6 2026-07-02
WMT7216 - 5 2026-06-12
WMT6AL - 5 2026-04-17
WMT6287 - 5 2026-06-12
WMT546 - 5 2026-06-29
WMT3796 - 5 2026-06-29
WMT33DE - 5 2026-07-08
WMT2UV - 5 2026-04-17
WMT2S - 5 2026-07-08
WMT2166 - 5 2026-07-02
WMT9SN - 4 2026-07-09
WMT8585 - 4 2026-07-14
WMT8438 - 4 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 WMT7344 - Jul 15, 04:00 UTCJul 15, 05:15 UTC1h 15m
2026-07-14 WMT94AU - Jul 14, 21:35 UTCJul 14, 23:05 UTC1h 29m
2026-07-14 WMT31AT OTP → HER Jul 14, 19:05 UTCJul 14, 20:25 UTC1h 20m
2026-07-14 WMT551 - Jul 14, 14:55 UTCJul 14, 17:30 UTC2h 35m
2026-07-14 WMT8585 - Jul 14, 10:15 UTCJul 14, 13:20 UTC3h 5m
2026-07-14 WMT26TU - Jul 14, 06:30 UTCJul 14, 08:50 UTC2h 20m
2026-07-14 WMT59B - Jul 14, 03:00 UTCJul 14, 05:25 UTC2h 25m
2026-07-13 WMT543 - Jul 13, 21:40 UTCJul 14, 00:20 UTC2h 40m
2026-07-13 WMT7PV - Jul 13, 17:10 UTCJul 13, 20:15 UTC3h 5m
2026-07-13 WMT5CS MXP → OTP Jul 13, 14:00 UTCJul 13, 15:50 UTC1h 50m
2026-07-13 WMT8UN - Jul 13, 10:15 UTCJul 13, 12:25 UTC2h 10m
2026-07-13 WMT9801 - Jul 13, 06:30 UTCJul 13, 08:45 UTC2h 15m
2026-07-13 WMT7403 - Jul 13, 02:55 UTCJul 13, 05:10 UTC2h 15m
2026-07-12 WMT68EQ - Jul 12, 22:30 UTCJul 12, 23:20 UTC50m
2026-07-12 WMT68EQ - Jul 12, 22:05 UTCJul 12, 22:25 UTC20m
2026-07-12 WMT4KL - Jul 12, 19:15 UTCJul 12, 20:45 UTC1h 30m
2026-07-12 WMT637N - Jul 12, 16:10 UTCJul 12, 18:05 UTC1h 55m
2026-07-12 WMT61N - Jul 12, 12:40 UTCJul 12, 14:40 UTC2h 0m
2026-07-12 WMT9XU - Jul 12, 08:35 UTCJul 12, 11:35 UTC3h 0m
2026-07-12 WMT565 - Jul 12, 04:01 UTCJul 12, 07:25 UTC3h 25m
2026-07-11 WMT4GW - Jul 11, 17:55 UTCJul 11, 21:00 UTC3h 5m
2026-07-11 WMT5ST - Jul 11, 12:45 UTCJul 11, 16:15 UTC3h 30m
2026-07-11 WZZ805 - Jul 11, 09:30 UTCJul 11, 11:10 UTC1h 40m
2026-07-11 WZZ8DM - Jul 11, 06:30 UTCJul 11, 08:15 UTC1h 45m
2026-07-11 WZZ26Y - Jul 11, 04:40 UTCJul 11, 05:35 UTC55m
2026-07-10 WZZ802 - Jul 10, 23:40 UTCJul 11, 01:35 UTC1h 55m
2026-07-10 WMT282 - Jul 10, 21:10 UTCJul 10, 22:40 UTC1h 30m
2026-07-10 WMT8AH - Jul 10, 18:05 UTCJul 10, 20:10 UTC2h 5m
2026-07-10 WMT6KA - Jul 10, 15:00 UTCJul 10, 16:50 UTC1h 50m
2026-07-10 WMT7CF - Jul 10, 11:35 UTCJul 10, 13:50 UTC2h 15m
2026-07-10 WMT729 - Jul 10, 07:20 UTCJul 10, 10:05 UTC2h 45m
2026-07-10 WMT2B - Jul 10, 03:10 UTCJul 10, 06:20 UTC3h 10m
2026-07-09 WMT8438 - Jul 9, 20:55 UTCJul 9, 22:30 UTC1h 35m
2026-07-09 WMT2NW - Jul 9, 17:55 UTCJul 9, 19:45 UTC1h 50m
2026-07-09 WMT551 - Jul 9, 13:45 UTCJul 9, 16:15 UTC2h 30m
2026-07-09 WMT8585 - Jul 9, 09:20 UTCJul 9, 12:25 UTC3h 5m
2026-07-09 WMT9SN - Jul 9, 05:50 UTCJul 9, 07:05 UTC1h 15m
2026-07-09 WMT3QZ - Jul 9, 03:20 UTCJul 9, 04:50 UTC1h 30m
2026-07-08 WMT2S BCN → OTP Jul 8, 21:25 UTCJul 9, 00:00 UTC2h 35m
2026-07-08 WMT33DE - Jul 8, 16:35 UTCJul 8, 19:25 UTC2h 50m
2026-07-08 WMT714 - Jul 8, 13:25 UTCJul 8, 15:10 UTC1h 45m
2026-07-08 WMT277 - Jul 8, 10:25 UTCJul 8, 12:35 UTC2h 10m
2026-07-08 WMT459 - Jul 8, 06:20 UTCJul 8, 08:30 UTC2h 10m
2026-07-08 WMT5HG - Jul 8, 02:50 UTCJul 8, 05:20 UTC2h 30m
2026-07-07 WMT5885 - Jul 7, 14:35 UTCJul 7, 15:55 UTC1h 20m
2026-07-07 WMT9494 - Jul 7, 12:10 UTCJul 7, 13:35 UTC1h 25m
2026-07-07 WMT32XB - Jul 7, 07:20 UTCJul 7, 10:15 UTC2h 55m
2026-07-07 WMT7188 - Jul 7, 02:55 UTCJul 7, 06:05 UTC3h 10m
2026-07-06 WMT72ZH BDS → OTP Jul 6, 21:00 UTCJul 6, 22:15 UTC1h 15m
2026-07-06 WMT3969 - Jul 6, 18:40 UTCJul 6, 19:50 UTC1h 10m

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

Mode-S 4D2146 frequently asked

What is Mode-S code 4D2146?
4D2146 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-IJK.
Where is Mode-S 4D2146 registered?
Mode-S code 4D2146 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2146 broadcasting right now?
Yes. Mode-S 4D2146 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2146, octal 23220506, decimal 5,054,790.
What flights does 4D2146 operate?
Mode-S 4D2146 has broadcast 20 distinct callsigns, including WMT7866, WMT5ST, WMT565, WMT4GW, WMT9XU.