Apparatus

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sensors Mode-S transponder

4D216A

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-RMD · CESSNA 560XL Citation XLS

Hex
4D216A
Octal
23220552
Decimal
5,054,826
Country
MT
Tail
9H-RMD
Type
C56X
Broadcasting now · callsign WMT3C · 36,000 ft
Flights observed
233
Distinct callsigns
20
Country
MT
Last broadcast
33m ago

Current position

4D216A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4D216A 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
WMT7237 - 11 2026-06-26
WMT579 Wizz Air Malta 11 2026-06-27
WMT4407 - 11 2026-06-26
WMT9984 - 9 2026-06-27
WMT9721 - 9 2026-06-27
WMT743 - 9 2026-06-27
WMT3C - 9 2026-06-23
WMT3066 - 9 2026-06-22
WMT1KS - 9 2026-06-27
WMT1280 - 8 2026-06-22
WMT7SR - 7 2026-06-15
WMT5PL - 7 2026-06-15
WMT3MA - 7 2026-06-22
WMT8064 - 6 2026-06-24
WMT796 - 6 2026-06-24
WMT454 - 6 2026-06-22
WMT9SX - 5 2026-06-22
WMT9SK Wizz Air Malta 5 2026-06-05
WMT8151 - 5 2026-06-22
WMT7SY - 5 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-27 WMT579 VCE → SSH Jun 27, 15:05 UTCJun 27, 20:29 UTC5h 25m
2026-06-27 WMT9721 BCN → MXP Jun 27, 11:44 UTCJun 27, 12:50 UTC1h 5m
2026-06-27 WMT1KS - Jun 27, 09:15 UTCJun 27, 10:29 UTC1h 15m
2026-06-27 WMT9984 - Jun 27, 06:59 UTCJun 27, 08:20 UTC1h 20m
2026-06-27 WMT743 MXP → BUD Jun 27, 04:59 UTCJun 27, 06:15 UTC1h 15m
2026-06-26 WMT3ZV BCN → MXP Jun 26, 21:15 UTCJun 26, 22:34 UTC1h 20m
2026-06-26 WMT1504 VIE → CFU Jun 26, 18:34 UTCJun 26, 19:39 UTC1h 5m
2026-06-26 WMT7359 MAD → MXP Jun 26, 15:39 UTCJun 26, 17:15 UTC1h 35m
2026-06-26 WMT958 - Jun 26, 12:10 UTCJun 26, 13:55 UTC1h 45m
2026-06-26 WMT7237 - Jun 26, 08:20 UTCJun 26, 09:59 UTC1h 40m
2026-06-26 WMT4407 MXP → MAD Jun 26, 05:10 UTCJun 26, 06:54 UTC1h 45m
2026-06-25 WMT7237 MAD → MXP Jun 25, 08:14 UTCJun 25, 10:04 UTC1h 50m
2026-06-25 WMT4407 MXP → MAD Jun 25, 05:00 UTCJun 25, 06:44 UTC1h 45m
2026-06-24 WMT164 - Jun 24, 19:55 UTCJun 24, 21:29 UTC1h 35m
2026-06-24 WMT1MS MXP → LTN Jun 24, 17:25 UTCJun 24, 18:50 UTC1h 25m
2026-06-24 WMT8064 - Jun 24, 14:45 UTCJun 24, 16:24 UTC1h 40m
2026-06-24 WMT796 MXP → LTN Jun 24, 11:45 UTCJun 24, 13:14 UTC1h 30m
2026-06-24 WMT7GM - Jun 24, 07:40 UTCJun 24, 09:49 UTC2h 10m
2026-06-24 WMT1334 - Jun 24, 04:24 UTCJun 24, 06:25 UTC2h 0m
2026-06-23 WMT3C - Jun 23, 19:55 UTCJun 23, 23:39 UTC3h 45m
2026-06-23 WMT579 VCE → SSH Jun 23, 14:49 UTCJun 23, 18:10 UTC3h 20m
2026-06-23 WMT9721 BCN → MXP Jun 23, 11:29 UTCJun 23, 12:40 UTC1h 10m
2026-06-23 WMT1KS MXP → BCN Jun 23, 08:54 UTCJun 23, 10:04 UTC1h 10m
2026-06-23 WMT9984 BUD → MXP Jun 23, 06:24 UTCJun 23, 07:40 UTC1h 15m
2026-06-23 WMT743 MXP → BUD Jun 23, 04:25 UTCJun 23, 05:45 UTC1h 20m
2026-06-22 WMT3MA - Jun 22, 22:49 UTCJun 23, 00:19 UTC1h 30m
2026-06-22 WMT454 - Jun 22, 19:54 UTCJun 22, 21:30 UTC1h 35m
2026-06-22 WMT9SX SVQ → MXP Jun 22, 16:24 UTCJun 22, 18:40 UTC2h 15m
2026-06-22 WMT8151 MXP → SVQ Jun 22, 12:49 UTCJun 22, 14:55 UTC2h 5m
2026-06-22 WMT3066 WAW → MXP Jun 22, 08:00 UTCJun 22, 09:45 UTC1h 45m
2026-06-22 WMT1280 MXP → WAW Jun 22, 05:20 UTCJun 22, 07:10 UTC1h 50m
2026-06-21 WMT164 - Jun 21, 21:49 UTCJun 21, 23:24 UTC1h 35m
2026-06-21 WMT1MS MXP → LTN Jun 21, 18:54 UTCJun 21, 20:29 UTC1h 35m
2026-06-21 WMT8064 - Jun 21, 15:54 UTCJun 21, 17:35 UTC1h 40m
2026-06-21 WMT796 MXP → LTN Jun 21, 12:24 UTCJun 21, 14:10 UTC1h 45m
2026-06-21 WMT7GM - Jun 21, 08:10 UTCJun 21, 10:25 UTC2h 15m
2026-06-21 WMT1334 MXP → GLA Jun 21, 04:44 UTCJun 21, 07:00 UTC2h 15m
2026-06-20 WMT3C - Jun 20, 20:29 UTCJun 21, 00:10 UTC3h 40m
2026-06-20 WMT579 VCE → SSH Jun 20, 15:14 UTCJun 20, 18:45 UTC3h 30m
2026-06-20 WMT9721 - Jun 20, 12:50 UTCJun 20, 13:59 UTC1h 10m
2026-06-20 WMT1KS MXP → BCN Jun 20, 09:19 UTCJun 20, 10:39 UTC1h 20m
2026-06-20 WMT9984 - Jun 20, 06:54 UTCJun 20, 08:14 UTC1h 20m
2026-06-20 WMT743 MXP → BUD Jun 20, 04:49 UTCJun 20, 06:10 UTC1h 20m
2026-06-19 WMT3ZV BCN → MXP Jun 19, 21:49 UTCJun 19, 22:49 UTC1h 0m
2026-06-19 WMT1504 VIE → CFU Jun 19, 19:09 UTCJun 19, 20:19 UTC1h 10m
2026-06-19 WMT7359 - Jun 19, 16:19 UTCJun 19, 17:59 UTC1h 40m
2026-06-19 WMT958 LTN → CLJ Jun 19, 13:14 UTCJun 19, 14:59 UTC1h 45m
2026-06-19 WMT7GM GLA → MXP Jun 19, 08:14 UTCJun 19, 10:35 UTC2h 20m
2026-06-19 WMT1334 MXP → GLA Jun 19, 05:14 UTCJun 19, 07:14 UTC2h 0m
2026-06-18 WMT3C - Jun 18, 20:05 UTCJun 18, 23:40 UTC3h 35m

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

Mode-S 4D216A frequently asked

What is Mode-S code 4D216A?
4D216A is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-RMD.
Where is Mode-S 4D216A registered?
Mode-S code 4D216A is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D216A broadcasting right now?
Yes. Mode-S 4D216A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D216A, octal 23220552, decimal 5,054,826.
What flights does 4D216A operate?
Mode-S 4D216A has broadcast 20 distinct callsigns, including WMT7237, WMT579, WMT4407, WMT9984, WMT9721.