Apparatus

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sensors Mode-S transponder

4D234D

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-VUN · BOEING 737 MAX 8

Hex
4D234D
Octal
23221515
Decimal
5,055,309
Country
MT
Tail
9H-VUN
Type
B38M
No current signal · last broadcast 7h ago
Flights observed
514
Distinct callsigns
20
Country
MT
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 4D234D.

Country allocation

The ICAO 24-bit address 4D234D 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
RYR35JJ - 6 2026-07-14
RYR13XJ - 6 2026-07-14
RYR1123 Ryanair 6 2026-04-19
RYR9XK Ryanair 5 2026-04-19
RYR9789 Ryanair 5 2026-04-22
RYR5NK Ryanair 5 2026-04-23
RYR99RH - 4 2026-06-28
RYR9576 Ryanair 4 2026-04-25
RYR88FE - 4 2026-06-28
RYR7CV Ryanair 4 2026-07-14
RYR522N Ryanair 4 2026-07-14
RYR434E Ryanair 4 2026-04-28
RYR3514 Ryanair 4 2026-04-20
RYR18QU Ryanair 4 2026-04-19
RYR99CK - 3 2026-06-25
RYR99AP - 3 2026-06-25
RYR66GR Ryanair 3 2026-04-15
RYR5F Ryanair 3 2026-04-24
RYR56UH - 3 2026-06-28
RYR4PC Ryanair 3 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR35JJ - Jul 14, 19:15 UTCJul 14, 21:35 UTC2h 20m
2026-07-14 RYR13XJ - Jul 14, 16:00 UTCJul 14, 18:00 UTC2h 0m
2026-07-14 RYR7CV HHN → STN Jul 14, 13:05 UTCJul 14, 14:10 UTC1h 5m
2026-07-14 RYR522N STN → PMO Jul 14, 10:40 UTCJul 14, 12:00 UTC1h 20m
2026-07-14 RYR367G - Jul 14, 07:00 UTCJul 14, 09:00 UTC2h 0m
2026-07-14 RYR44ZN - Jul 14, 04:20 UTCJul 14, 05:55 UTC1h 35m
2026-07-13 RYR3XZ - Jul 13, 17:50 UTCJul 13, 19:15 UTC1h 25m
2026-07-13 RYR67FC - Jul 13, 15:55 UTCJul 13, 17:05 UTC1h 10m
2026-07-13 RYR7JT - Jul 13, 13:00 UTCJul 13, 14:35 UTC1h 35m
2026-07-13 RYR33VH - Jul 13, 10:35 UTCJul 13, 12:00 UTC1h 25m
2026-07-13 RYR54BW - Jul 13, 07:25 UTCJul 13, 09:15 UTC1h 50m
2026-07-13 RYR824W - Jul 13, 04:40 UTCJul 13, 06:20 UTC1h 40m
2026-07-12 RYR7CV HHN → STN Jul 12, 18:30 UTCJul 12, 19:35 UTC1h 5m
2026-07-12 RYR522N STN → PMO Jul 12, 16:20 UTCJul 12, 17:35 UTC1h 15m
2026-07-12 RYR35JJ - Jul 12, 13:10 UTCJul 12, 15:25 UTC2h 15m
2026-07-12 RYR13XJ - Jul 12, 10:05 UTCJul 12, 12:10 UTC2h 5m
2026-07-12 RYR81PY - Jul 12, 06:30 UTCJul 12, 07:55 UTC1h 25m
2026-07-12 RYR53YW - Jul 12, 04:01 UTCJul 12, 05:25 UTC1h 25m
2026-07-11 RYR35JJ - Jul 11, 18:45 UTCJul 11, 20:55 UTC2h 10m
2026-07-11 RYR13XJ - Jul 11, 15:40 UTCJul 11, 17:40 UTC2h 0m
2026-07-11 RYR4531 - Jul 11, 12:50 UTCJul 11, 14:45 UTC1h 55m
2026-07-11 RYR2ZK - Jul 11, 09:40 UTCJul 11, 11:35 UTC1h 55m
2026-07-11 RYR5364 - Jul 11, 07:50 UTCJul 11, 08:35 UTC45m
2026-07-11 RYR5365 - Jul 11, 05:35 UTCJul 11, 06:15 UTC40m
2026-07-10 RYR7JT - Jul 10, 20:20 UTCJul 10, 21:45 UTC1h 26m
2026-07-10 RYR33VH - Jul 10, 17:50 UTCJul 10, 19:30 UTC1h 40m
2026-07-10 RYR35JJ - Jul 10, 12:05 UTCJul 10, 14:20 UTC2h 15m
2026-07-10 RYR13XJ - Jul 10, 09:10 UTCJul 10, 11:10 UTC2h 0m
2026-07-10 RYR21NF - Jul 10, 07:20 UTCJul 10, 08:25 UTC1h 5m
2026-07-10 RYR55KV - Jul 10, 04:55 UTCJul 10, 06:10 UTC1h 15m
2026-07-09 RYR26SP OLB → BVA Jul 9, 18:15 UTCJul 9, 19:55 UTC1h 40m
2026-07-09 RYR6509 BVA → OLB Jul 9, 15:05 UTCJul 9, 16:50 UTC1h 45m
2026-07-09 RYR594A PMI → BVA Jul 9, 12:40 UTCJul 9, 14:15 UTC1h 35m
2026-07-09 RYR84SD - Jul 9, 09:40 UTCJul 9, 11:15 UTC1h 35m
2026-07-09 RYR4363 - Jul 9, 06:35 UTCJul 9, 08:20 UTC1h 45m
2026-07-09 RYR92EM - Jul 9, 04:00 UTCJul 9, 05:40 UTC1h 40m
2026-07-08 RYR7PL - Jul 8, 18:10 UTCJul 8, 20:35 UTC2h 25m
2026-07-08 RYR8611 - Jul 8, 15:05 UTCJul 8, 16:50 UTC1h 45m
2026-07-08 RYR9267 - Jul 8, 11:45 UTCJul 8, 13:05 UTC1h 20m
2026-07-08 RYR9266 - Jul 8, 09:25 UTCJul 8, 10:55 UTC1h 30m
2026-07-08 RYR89BH - Jul 8, 07:05 UTCJul 8, 08:35 UTC1h 30m
2026-07-08 RYR15QV - Jul 8, 04:25 UTCJul 8, 05:40 UTC1h 15m
2026-07-07 RYR35JJ - Jul 7, 17:50 UTCJul 7, 20:05 UTC2h 15m
2026-07-07 RYR13XJ - Jul 7, 14:55 UTCJul 7, 16:55 UTC2h 0m
2026-07-07 RYR7CV HHN → STN Jul 7, 12:45 UTCJul 7, 13:45 UTC1h 0m
2026-07-07 RYR522N STN → PMO Jul 7, 10:35 UTCJul 7, 11:50 UTC1h 15m
2026-07-07 RYR367G - Jul 7, 07:05 UTCJul 7, 09:05 UTC2h 0m
2026-07-07 RYR44ZN - Jul 7, 04:25 UTCJul 7, 06:05 UTC1h 40m
2026-07-06 RYR7CV HHN → STN Jul 6, 19:40 UTCJul 6, 20:40 UTC1h 0m
2026-07-06 RYR522N STN → PMO Jul 6, 17:25 UTCJul 6, 18:35 UTC1h 10m

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

Mode-S 4D234D frequently asked

What is Mode-S code 4D234D?
4D234D is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-VUN.
Where is Mode-S 4D234D registered?
Mode-S code 4D234D is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D234D broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D234D, octal 23221515, decimal 5,055,309.
What flights does 4D234D operate?
Mode-S 4D234D has broadcast 20 distinct callsigns, including RYR35JJ, RYR13XJ, RYR1123, RYR9XK, RYR9789.