Apparatus

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sensors Mode-S transponder

4D2133

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-VCM · BOMBARDIER BD-100 Challenger 350

Hex
4D2133
Octal
23220463
Decimal
5,054,771
Country
MT
Tail
9H-VCM
Type
CL35
No current signal · last broadcast Jul 26, 18:55 UTC
Flights observed
174
Distinct callsigns
4
Country
MT
Last broadcast
Jul 26, 18:55 UTC

Last known position

Most recent position reported by Mode-S 4D2133.

Country allocation

The ICAO 24-bit address 4D2133 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 4 distinct

Callsign Airline Flights Last seen
VJT431 - 171 2026-07-26
VJT949W - 1 2026-05-30
VJT900W - 1 2026-05-31
VJT029K - 1 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VJT431 IBZ → CMN Jul 26, 17:10 UTCJul 26, 18:55 UTC1h 45m
2026-07-26 VJT431 BCN → IBZ Jul 26, 15:35 UTCJul 26, 16:15 UTC40m
2026-07-26 VJT431 - Jul 26, 12:15 UTCJul 26, 13:45 UTC1h 30m
2026-07-25 VJT431 FAO → BLQ Jul 25, 19:25 UTCJul 25, 21:35 UTC2h 10m
2026-07-25 VJT431 - Jul 25, 17:50 UTCJul 25, 18:10 UTC20m
2026-07-25 VJT431 - Jul 25, 14:35 UTCJul 25, 16:40 UTC2h 5m
2026-07-25 VJT431 LBG → NHT Jul 25, 11:35 UTCJul 25, 12:20 UTC45m
2026-07-23 VJT431 - Jul 23, 14:05 UTCJul 23, 15:00 UTC55m
2026-07-23 VJT431 NCE → GVA Jul 23, 11:20 UTCJul 23, 12:05 UTC45m
2026-07-23 VJT431 MAH → NCE Jul 23, 08:10 UTCJul 23, 09:00 UTC50m
2026-07-23 VJT431 - Jul 23, 06:20 UTCJul 23, 07:20 UTC1h 0m
2026-07-21 VJT431 JMK → MAD Jul 21, 02:30 UTCJul 21, 06:05 UTC3h 35m
2026-07-21 VJT431 ATH → JMK Jul 21, 01:05 UTCJul 21, 01:30 UTC25m
2026-07-15 VJT431 - Jul 15, 11:00 UTCJul 15, 11:25 UTC25m
2026-07-15 VJT431 TLV → JMK Jul 15, 08:30 UTCJul 15, 10:10 UTC1h 40m
2026-07-15 VJT431 - Jul 15, 05:45 UTCJul 15, 06:20 UTC35m
2026-07-14 VJT431 RHO → LCA Jul 14, 16:50 UTCJul 14, 17:50 UTC1h 0m
2026-07-14 VJT431 - Jul 14, 10:50 UTCJul 14, 12:25 UTC1h 35m
2026-07-14 VJT431 LIN → MLA Jul 14, 08:05 UTCJul 14, 09:40 UTC1h 35m
2026-07-13 VJT431 ZRH → LIN Jul 13, 12:45 UTCJul 13, 13:15 UTC30m
2026-07-13 VJT431 - Jul 13, 09:50 UTCJul 13, 11:20 UTC1h 30m
2026-07-12 VJT431 - Jul 12, 11:10 UTCJul 12, 12:10 UTC1h 0m
2026-07-12 VJT431 - Jul 12, 07:15 UTCJul 12, 09:55 UTC2h 40m
2026-07-11 VJT431 - Jul 11, 15:20 UTCJul 11, 16:50 UTC1h 30m
2026-07-11 VJT431 - Jul 11, 13:30 UTCJul 11, 14:10 UTC40m
2026-07-11 VJT431 - Jul 11, 12:00 UTCJul 11, 12:40 UTC40m
2026-07-10 VJT431 - Jul 10, 14:50 UTCJul 10, 15:50 UTC1h 0m
2026-07-10 VJT431 - Jul 10, 12:30 UTCJul 10, 13:25 UTC55m
2026-07-10 VJT431 MLA → CIA Jul 10, 10:10 UTCJul 10, 11:15 UTC1h 5m
2026-07-05 VJT431 ATH → MLA Jul 5, 18:15 UTCJul 5, 19:45 UTC1h 30m
2026-07-05 VJT431 - Jul 5, 15:05 UTCJul 5, 17:20 UTC2h 15m
2026-07-05 VJT431 - Jul 5, 10:05 UTCJul 5, 11:30 UTC1h 25m
2026-07-05 VJT431 - Jul 5, 08:25 UTCJul 5, 08:55 UTC30m
2026-07-04 VJT431 - Jul 4, 09:20 UTCJul 4, 11:15 UTC1h 55m
2026-07-04 VJT431 - Jul 4, 06:45 UTCJul 4, 08:15 UTC1h 30m
2026-07-04 VJT431 - Jul 4, 03:15 UTCJul 4, 05:40 UTC2h 25m
2026-07-02 VJT431 - Jul 2, 16:15 UTCJul 2, 16:50 UTC35m
2026-07-02 VJT431 - Jul 2, 13:00 UTCJul 2, 14:50 UTC1h 50m
2026-07-02 VJT431 - Jul 2, 09:20 UTCJul 2, 09:40 UTC20m
2026-07-02 VJT431 - Jul 2, 07:25 UTCJul 2, 08:10 UTC45m
2026-06-23 VJT431 - Jun 23, 14:35 UTCJun 23, 15:19 UTC45m
2026-06-23 VJT431 - Jun 23, 08:25 UTCJun 23, 11:29 UTC3h 5m
2026-06-23 VJT431 - Jun 23, 05:49 UTCJun 23, 06:34 UTC45m
2026-06-22 VJT431 - Jun 22, 08:44 UTCJun 22, 10:00 UTC1h 15m
2026-06-21 VJT431 IBZ → ATH Jun 21, 18:20 UTCJun 21, 20:50 UTC2h 30m
2026-06-21 VJT029K MAD → IBZ Jun 21, 16:25 UTCJun 21, 17:10 UTC45m
2026-06-21 VJT431 IBZ → MAD Jun 21, 12:35 UTCJun 21, 13:29 UTC55m
2026-06-21 VJT431 - Jun 21, 09:44 UTCJun 21, 11:30 UTC1h 45m
2026-06-20 VJT431 - Jun 20, 13:34 UTCJun 20, 14:24 UTC50m
2026-06-20 VJT431 - Jun 20, 07:19 UTCJun 20, 12:04 UTC4h 45m

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

Mode-S 4D2133 frequently asked

What is Mode-S code 4D2133?
4D2133 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-VCM.
Where is Mode-S 4D2133 registered?
Mode-S code 4D2133 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2133 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2133, octal 23220463, decimal 5,054,771.
What flights does 4D2133 operate?
Mode-S 4D2133 has broadcast 4 distinct callsigns, including VJT431, VJT949W, VJT900W, VJT029K.