Apparatus

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sensors Mode-S transponder

4D2155

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-VTD · BOMBARDIER BD-700 Global 6000/6500

Hex
4D2155
Octal
23220525
Decimal
5,054,805
Country
MT
Tail
9H-VTD
Type
GLEX
No current signal · last broadcast 1d ago
Flights observed
83
Distinct callsigns
3
Country
MT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4D2155.

Country allocation

The ICAO 24-bit address 4D2155 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 3 distinct

Callsign Airline Flights Last seen
VJT993 - 80 2026-07-26
VJT311R - 2 2026-06-29
VJT231 - 1 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VJT993 - Jul 26, 17:20 UTCJul 26, 21:15 UTC3h 55m
2026-07-26 VJT993 LBG → CPH Jul 26, 14:30 UTCJul 26, 15:55 UTC1h 25m
2026-07-25 VJT993 TEB → LBG Jul 25, 18:15 UTCJul 26, 00:35 UTC6h 20m
2026-07-25 VJT993 - Jul 25, 01:40 UTCJul 25, 01:50 UTC10m
2026-07-24 VJT993 - Jul 24, 15:40 UTCJul 25, 00:30 UTC8h 50m
2026-07-22 VJT993 - Jul 22, 14:05 UTCJul 22, 15:55 UTC1h 50m
2026-07-22 VJT993 - Jul 22, 11:10 UTCJul 22, 11:15 UTC5m
2026-07-18 VJT993 - Jul 18, 02:19 UTCJul 18, 03:55 UTC1h 36m
2026-07-15 VJT993 - Jul 15, 14:45 UTCJul 16, 01:05 UTC10h 20m
2026-07-14 VJT993 - Jul 14, 13:20 UTCJul 14, 17:15 UTC3h 55m
2026-07-14 VJT993 - Jul 14, 09:55 UTCJul 14, 13:15 UTC3h 20m
2026-07-12 VJT993 - Jul 12, 17:45 UTCJul 12, 23:35 UTC5h 50m
2026-07-12 VJT993 - Jul 12, 14:10 UTCJul 12, 16:15 UTC2h 5m
2026-07-12 VJT993 - Jul 12, 04:40 UTCJul 12, 13:01 UTC8h 20m
2026-07-11 VJT993 - Jul 11, 21:35 UTCJul 12, 02:15 UTC4h 40m
2026-07-10 VJT993 - Jul 10, 14:45 UTCJul 11, 01:00 UTC10h 15m
2026-07-10 VJT993 - Jul 10, 12:50 UTCJul 10, 13:00 UTC10m
2026-07-10 VJT993 - Jul 10, 09:40 UTCJul 10, 11:20 UTC1h 40m
2026-07-09 VJT993 - Jul 9, 12:50 UTCJul 9, 15:25 UTC2h 35m
2026-07-09 VJT993 LIN → OUL Jul 9, 08:10 UTCJul 9, 11:15 UTC3h 5m
2026-07-08 VJT993 - Jul 8, 00:40 UTCJul 8, 08:25 UTC7h 45m
2026-07-07 VJT993 - Jul 7, 20:40 UTCJul 7, 22:40 UTC2h 0m
2026-07-06 VJT993 - Jul 6, 12:25 UTCJul 6, 23:55 UTC11h 30m
2026-07-06 VJT993 LIN → ATH Jul 6, 08:30 UTCJul 6, 10:20 UTC1h 50m
2026-07-05 VJT993 - Jul 5, 14:30 UTCJul 5, 15:15 UTC45m
2026-07-05 VJT993 - Jul 5, 10:50 UTCJul 5, 11:30 UTC40m
2026-07-04 VJT993 BCN → TLN Jul 4, 15:50 UTCJul 4, 16:30 UTC40m
2026-07-04 VJT993 - Jul 4, 06:25 UTCJul 4, 11:35 UTC5h 10m
2026-07-03 VJT993 - Jul 3, 08:15 UTCJul 4, 07:15 UTC23h 0m
2026-07-02 VJT231 - Jul 2, 21:20 UTCJul 3, 05:50 UTC8h 30m
2026-07-01 VJT993 - Jul 1, 18:30 UTCJul 1, 20:20 UTC1h 50m
2026-07-01 VJT993 - Jul 1, 15:25 UTCJul 1, 16:50 UTC1h 25m
2026-07-01 VJT993 - Jul 1, 12:25 UTCJul 1, 13:50 UTC1h 25m
2026-06-30 VJT993 - Jun 30, 17:50 UTCJun 30, 19:20 UTC1h 30m
2026-06-29 VJT311R - Jun 29, 06:09 UTCJun 29, 06:24 UTC15m
2026-06-26 VJT311R - Jun 26, 18:15 UTCJun 27, 04:34 UTC10h 20m
2026-06-25 VJT993 - Jun 25, 07:05 UTCJun 25, 08:20 UTC1h 15m
2026-06-24 VJT993 - Jun 24, 22:00 UTCJun 24, 22:35 UTC35m
2026-06-23 VJT993 LBG → ORL Jun 23, 11:29 UTCJun 23, 20:40 UTC9h 10m
2026-06-22 VJT993 - Jun 22, 11:44 UTCJun 22, 12:49 UTC1h 5m
2026-06-22 VJT993 - Jun 22, 02:54 UTCJun 22, 09:54 UTC7h 0m
2026-06-21 VJT993 - Jun 21, 20:24 UTCJun 21, 21:14 UTC50m
2026-06-21 VJT993 DBV → IAD Jun 21, 07:14 UTCJun 21, 16:39 UTC9h 25m
2026-06-20 VJT993 PSA → DBV Jun 20, 10:04 UTCJun 20, 11:09 UTC1h 5m
2026-06-20 VJT993 - Jun 20, 01:34 UTCJun 20, 08:44 UTC7h 10m
2026-06-19 VJT993 - Jun 19, 16:04 UTCJun 19, 18:30 UTC2h 25m
2026-06-18 VJT993 - Jun 18, 15:20 UTCJun 18, 23:20 UTC8h 0m
2026-06-17 VJT993 - Jun 17, 21:20 UTCJun 18, 20:20 UTC23h 0m
2026-06-17 VJT993 - Jun 17, 20:50 UTCJun 18, 19:15 UTC22h 25m
2026-06-17 VJT993 - Jun 17, 17:20 UTCJun 18, 16:20 UTC23h 0m

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

Mode-S 4D2155 frequently asked

What is Mode-S code 4D2155?
4D2155 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-VTD.
Where is Mode-S 4D2155 registered?
Mode-S code 4D2155 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D2155 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 4D2155, octal 23220525, decimal 5,054,805.
What flights does 4D2155 operate?
Mode-S 4D2155 has broadcast 3 distinct callsigns, including VJT993, VJT311R, VJT231.