sensors Mode-S transponder

4D20BE

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D20BE
Octal
23220276
Decimal
5,054,654
Country
MT
Tail
9H-WMJ
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
11
Distinct callsigns
8
Country
MT
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4D20BE.

Country allocation

The ICAO 24-bit address 4D20BE 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 8 distinct

Callsign Airline Flights Last seen
WMT997 - 2 2026-04-14
WMT9041 - 2 2026-04-13
WMT7BG - 2 2026-04-13
WMT9LZ - 1 2026-04-13
WMT761 - 1 2026-04-12
WMT4QB - 1 2026-04-13
WMT3662 - 1 2026-04-14
WMT1UF - 1 2026-04-12

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 WMT997 - Apr 14, 09:10 UTCApr 14, 10:05 UTC55m
2026-04-14 WMT997 - Apr 14, 08:40 UTCApr 14, 09:05 UTC25m
2026-04-14 WMT3662 - Apr 14, 05:50 UTCApr 14, 07:10 UTC1h 20m
2026-04-13 WMT9041 - Apr 13, 19:50 UTCApr 13, 22:05 UTC2h 15m
2026-04-13 WMT9041 - Apr 13, 19:40 UTCApr 13, 20:10 UTC30m
2026-04-13 WMT7BG - Apr 13, 16:15 UTCApr 13, 18:35 UTC2h 20m
2026-04-13 WMT7BG - Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 WMT4QB - Apr 13, 12:45 UTCApr 13, 13:50 UTC1h 5m
2026-04-13 WMT9LZ - Apr 13, 10:30 UTCApr 13, 11:50 UTC1h 20m
2026-04-12 WMT761 - Apr 12, 19:15 UTCApr 12, 20:15 UTC1h 0m
2026-04-12 WMT1UF - Apr 12, 17:15 UTCApr 12, 17:30 UTC15m

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

Mode-S 4D20BE frequently asked

What is Mode-S code 4D20BE?
4D20BE is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-WMJ.
Where is Mode-S 4D20BE registered?
Mode-S code 4D20BE is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D20BE broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D20BE, octal 23220276, decimal 5,054,654.
What flights does 4D20BE operate?
Mode-S 4D20BE has broadcast 8 distinct callsigns, including WMT997, WMT9041, WMT7BG, WMT9LZ, WMT761.