Apparatus

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sensors Mode-S transponder

4D20F4

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D20F4
Octal
23220364
Decimal
5,054,708
Country
MT
Tail
9H-WMN
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
230
Distinct callsigns
20
Country
MT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4D20F4.

Country allocation

The ICAO 24-bit address 4D20F4 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
WMT6767 - 10 2026-07-13
WMT6WW - 9 2026-07-13
WMT4763 - 8 2026-07-12
WMT314 Wizz Air Malta 8 2026-07-12
WMT649 - 7 2026-07-14
WMT678 - 6 2026-07-09
WMT5454 - 6 2026-07-10
WMT4493 - 6 2026-07-02
WMT3HS - 6 2026-07-09
WMT3245 - 6 2026-07-12
WMT1LN - 6 2026-07-02
WMT9ZH - 5 2026-07-13
WMT943 - 5 2026-07-13
WMT906 - 4 2026-07-08
WMT8B - 4 2026-07-09
WMT769 - 4 2026-07-08
WMT7286 - 4 2026-07-11
WMT676 - 4 2026-07-11
WMT4902 Wizz Air Malta 4 2026-07-02
WMT3502 Wizz Air Malta 4 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 WMT2684 - Jul 14, 07:40 UTCJul 14, 09:00 UTC1h 20m
2026-07-14 WMT649 - Jul 14, 04:10 UTCJul 14, 06:20 UTC2h 10m
2026-07-13 WMT6767 - Jul 13, 22:10 UTCJul 13, 23:40 UTC1h 30m
2026-07-13 WMT6WW VCE → LTN Jul 13, 19:20 UTCJul 13, 21:10 UTC1h 50m
2026-07-13 WMT943 - Jul 13, 17:00 UTCJul 13, 17:55 UTC55m
2026-07-13 WMT9ZH - Jul 13, 14:50 UTCJul 13, 15:35 UTC45m
2026-07-13 WMT224 BUD → VCE Jul 13, 12:35 UTCJul 13, 13:35 UTC1h 0m
2026-07-13 WMT136 - Jul 13, 10:45 UTCJul 13, 11:40 UTC55m
2026-07-13 WMT30CT - Jul 13, 07:20 UTCJul 13, 08:50 UTC1h 30m
2026-07-13 WMT13EP - Jul 13, 04:15 UTCJul 13, 06:01 UTC1h 45m
2026-07-12 WMT6767 LTN → VCE Jul 12, 21:05 UTCJul 12, 22:40 UTC1h 35m
2026-07-12 WMT6WW - Jul 12, 18:20 UTCJul 12, 20:05 UTC1h 45m
2026-07-12 WMT314 CLJ → RAK Jul 12, 15:15 UTCJul 12, 17:10 UTC1h 55m
2026-07-12 WMT4763 - Jul 12, 12:10 UTCJul 12, 13:50 UTC1h 40m
2026-07-12 WMT3245 - Jul 12, 07:45 UTCJul 12, 09:50 UTC2h 5m
2026-07-12 WMT649 - Jul 12, 04:20 UTCJul 12, 06:30 UTC2h 10m
2026-07-11 WMT6767 - Jul 11, 20:15 UTCJul 11, 21:55 UTC1h 40m
2026-07-11 WMT6WW - Jul 11, 17:20 UTCJul 11, 19:15 UTC1h 55m
2026-07-11 WMT943 - Jul 11, 15:15 UTCJul 11, 16:05 UTC50m
2026-07-11 WMT9ZH - Jul 11, 13:20 UTCJul 11, 14:05 UTC45m
2026-07-11 WMT7286 - Jul 11, 08:30 UTCJul 11, 11:45 UTC3h 15m
2026-07-11 WMT676 - Jul 11, 04:01 UTCJul 11, 06:50 UTC2h 50m
2026-07-10 WMT6767 LTN → VCE Jul 10, 21:20 UTCJul 10, 23:00 UTC1h 40m
2026-07-10 WMT6WW - Jul 10, 18:20 UTCJul 10, 20:10 UTC1h 50m
2026-07-10 WMT943 - Jul 10, 16:10 UTCJul 10, 17:00 UTC50m
2026-07-10 WMT9ZH - Jul 10, 13:35 UTCJul 10, 14:25 UTC50m
2026-07-10 WMT623 - Jul 10, 08:30 UTCJul 10, 12:15 UTC3h 45m
2026-07-10 WMT5454 - Jul 10, 06:35 UTCJul 10, 06:50 UTC15m
2026-07-10 WMT5454 - Jul 10, 03:55 UTCJul 10, 05:50 UTC1h 55m
2026-07-09 WMT8B - Jul 9, 14:45 UTCJul 9, 22:45 UTC8h 0m
2026-07-09 WMT678 - Jul 9, 12:05 UTCJul 9, 13:30 UTC1h 25m
2026-07-09 WMT3HS - Jul 9, 09:35 UTCJul 9, 10:50 UTC1h 15m
2026-07-09 WMT4793 BOD → VCE Jul 9, 07:05 UTCJul 9, 08:30 UTC1h 25m
2026-07-09 WMT8XC VCE → BOD Jul 9, 04:20 UTCJul 9, 05:55 UTC1h 35m
2026-07-08 WMT6084 - Jul 8, 14:40 UTCJul 8, 22:55 UTC8h 15m
2026-07-08 WMT678 - Jul 8, 12:10 UTCJul 8, 13:30 UTC1h 20m
2026-07-08 WMT3HS - Jul 8, 09:45 UTCJul 8, 11:00 UTC1h 15m
2026-07-08 WMT906 - Jul 8, 06:50 UTCJul 8, 08:20 UTC1h 30m
2026-07-08 WMT769 - Jul 8, 04:20 UTCJul 8, 05:45 UTC1h 25m
2026-07-07 WMT6767 - Jul 7, 20:15 UTCJul 7, 21:50 UTC1h 35m
2026-07-07 WMT6WW VCE → LTN Jul 7, 17:25 UTCJul 7, 19:15 UTC1h 50m
2026-07-07 WMT943 - Jul 7, 15:40 UTCJul 7, 16:30 UTC50m
2026-07-07 WMT9ZH - Jul 7, 13:20 UTCJul 7, 14:20 UTC1h 0m
2026-07-07 WMT5JN SVQ → VCE Jul 7, 09:55 UTCJul 7, 12:25 UTC2h 30m
2026-07-07 WMT79AC VCE → SVQ Jul 7, 06:10 UTCJul 7, 08:50 UTC2h 40m
2026-07-06 WMT2WP - Jul 6, 20:15 UTCJul 6, 22:35 UTC2h 20m
2026-07-06 WMT585 - Jul 6, 16:45 UTCJul 6, 19:15 UTC2h 30m
2026-07-06 WMT678 - Jul 6, 14:10 UTCJul 6, 15:40 UTC1h 30m
2026-07-06 WMT3HS - Jul 6, 11:15 UTCJul 6, 12:40 UTC1h 25m
2026-07-06 WMT906 - Jul 6, 07:35 UTCJul 6, 09:05 UTC1h 30m

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

Mode-S 4D20F4 frequently asked

What is Mode-S code 4D20F4?
4D20F4 is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-WMN.
Where is Mode-S 4D20F4 registered?
Mode-S code 4D20F4 is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D20F4 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D20F4, octal 23220364, decimal 5,054,708.
What flights does 4D20F4 operate?
Mode-S 4D20F4 has broadcast 20 distinct callsigns, including WMT6767, WMT6WW, WMT4763, WMT314, WMT649.