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 Jul 26, 20:40 UTC
Flights observed
591
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 20:40 UTC

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 - 10 2026-07-19
RYR13XJ - 10 2026-07-19
RYR1123 Ryanair 6 2026-04-19
RYR9XK Ryanair 5 2026-04-19
RYR9789 Ryanair 5 2026-04-22
RYR7CV Ryanair 5 2026-07-19
RYR5NK Ryanair 5 2026-04-23
RYR522N Ryanair 5 2026-07-19
RYR99RH - 4 2026-06-28
RYR9576 Ryanair 4 2026-04-25
RYR88FE - 4 2026-06-28
RYR7JT - 4 2026-07-20
RYR55KV Ryanair 4 2026-07-21
RYR434E Ryanair 4 2026-04-28
RYR3514 Ryanair 4 2026-04-20
RYR33VH - 4 2026-07-20
RYR21NF Ryanair 4 2026-07-21
RYR18QU Ryanair 4 2026-04-19
RYR99CK - 3 2026-06-25
RYR99AP - 3 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR20WJ SUF → TRN Jul 26, 19:10 UTCJul 26, 20:35 UTC1h 25m
2026-07-26 RYR203A VRN → SUF Jul 26, 16:50 UTCJul 26, 18:05 UTC1h 15m
2026-07-26 RYR297X SUF → VRN Jul 26, 14:20 UTCJul 26, 15:40 UTC1h 20m
2026-07-26 RYR87WW FMM → SUF Jul 26, 11:40 UTCJul 26, 13:10 UTC1h 30m
2026-07-26 RYR61QZ SUF → FMM Jul 26, 08:50 UTCJul 26, 10:30 UTC1h 40m
2026-07-26 RYR33AY BGY → SUF Jul 26, 06:25 UTCJul 26, 07:40 UTC1h 16m
2026-07-26 RYR29LJ TFS → VIE Jul 26, 03:45 UTCJul 26, 05:10 UTC1h 25m
2026-07-25 RYR9QM STN → TFS Jul 25, 21:35 UTCJul 25, 22:55 UTC1h 20m
2026-07-25 RYR6FP SVQ → CRL Jul 25, 19:15 UTCJul 25, 20:50 UTC1h 35m
2026-07-25 RYR65HL - Jul 25, 17:05 UTCJul 25, 18:15 UTC1h 10m
2026-07-25 RYR465X SUF → BGY Jul 25, 14:35 UTCJul 25, 16:00 UTC1h 25m
2026-07-25 RYR73EL TRN → SUF Jul 25, 12:05 UTCJul 25, 13:25 UTC1h 20m
2026-07-25 RYR20WJ SUF → TRN Jul 25, 09:30 UTCJul 25, 11:00 UTC1h 30m
2026-07-25 RYR769T - Jul 25, 07:10 UTCJul 25, 08:35 UTC1h 25m
2026-07-25 RYR69TU SUF → MXP Jul 25, 04:35 UTCJul 25, 06:10 UTC1h 35m
2026-07-24 RYR9QM STN → TFS Jul 24, 21:10 UTCJul 24, 22:25 UTC1h 15m
2026-07-24 RYR6FP SVQ → CRL Jul 24, 19:00 UTCJul 24, 20:20 UTC1h 20m
2026-07-24 RYR65HL - Jul 24, 17:00 UTCJul 24, 18:10 UTC1h 10m
2026-07-24 RYR465X SUF → BGY Jul 24, 14:45 UTCJul 24, 16:05 UTC1h 20m
2026-07-24 RYR12LU BGY → SUF Jul 24, 12:00 UTCJul 24, 13:20 UTC1h 20m
2026-07-24 RYR13LL - Jul 24, 09:40 UTCJul 24, 11:05 UTC1h 25m
2026-07-24 RYR73EL TRN → SUF Jul 24, 07:20 UTCJul 24, 08:35 UTC1h 15m
2026-07-24 RYR20WJ SUF → TRN Jul 24, 04:55 UTCJul 24, 06:25 UTC1h 30m
2026-07-23 RYR203A VRN → SUF Jul 23, 20:50 UTCJul 23, 21:50 UTC1h 0m
2026-07-23 RYR297X SUF → VRN Jul 23, 18:45 UTCJul 23, 20:00 UTC1h 15m
2026-07-23 RYR4592 KTW → SUF Jul 23, 15:55 UTCJul 23, 17:50 UTC1h 55m
2026-07-23 RYR4593 SUF → KTW Jul 23, 13:20 UTCJul 23, 15:15 UTC1h 55m
2026-07-23 RYR61PT - Jul 23, 10:40 UTCJul 23, 12:20 UTC1h 40m
2026-07-23 RYR63LL - Jul 23, 08:30 UTCJul 23, 09:55 UTC1h 25m
2026-07-23 RYR65HL - Jul 23, 06:30 UTCJul 23, 07:40 UTC1h 10m
2026-07-22 RYR2UW BVA → BGY Jul 22, 21:20 UTCJul 22, 22:15 UTC55m
2026-07-22 RYR7PL - Jul 22, 18:05 UTCJul 22, 20:15 UTC2h 10m
2026-07-22 RYR8611 - Jul 22, 14:45 UTCJul 22, 16:35 UTC1h 50m
2026-07-22 RYR9267 CPH → BVA Jul 22, 11:35 UTCJul 22, 12:45 UTC1h 10m
2026-07-22 RYR15QV BVA → BCN Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-21 RYR4531 - Jul 21, 17:40 UTCJul 21, 19:45 UTC2h 5m
2026-07-21 RYR2ZK - Jul 21, 15:15 UTCJul 21, 16:50 UTC1h 35m
2026-07-21 RYR94XU - Jul 21, 11:35 UTCJul 21, 14:00 UTC2h 25m
2026-07-21 RYR12AB CDT → STN Jul 21, 08:45 UTCJul 21, 10:35 UTC1h 50m
2026-07-21 RYR21NF DUB → BVA Jul 21, 06:50 UTCJul 21, 07:55 UTC1h 5m
2026-07-21 RYR55KV BVA → DUB Jul 21, 04:35 UTCJul 21, 05:45 UTC1h 10m
2026-07-20 RYR3XZ BRS → PMI Jul 20, 17:30 UTCJul 20, 19:00 UTC1h 30m
2026-07-20 RYR67FC - Jul 20, 15:30 UTCJul 20, 16:40 UTC1h 10m
2026-07-20 RYR7JT - Jul 20, 12:35 UTCJul 20, 14:10 UTC1h 35m
2026-07-20 RYR33VH - Jul 20, 10:10 UTCJul 20, 11:35 UTC1h 25m
2026-07-20 RYR54BW WMI → BVA Jul 20, 07:20 UTCJul 20, 09:10 UTC1h 50m
2026-07-20 RYR824W - Jul 20, 04:35 UTCJul 20, 06:20 UTC1h 45m
2026-07-19 RYR7CV HHN → STN Jul 19, 19:15 UTCJul 19, 20:25 UTC1h 10m
2026-07-19 RYR522N STN → PMO Jul 19, 17:05 UTCJul 19, 18:20 UTC1h 15m
2026-07-19 RYR35JJ - Jul 19, 13:50 UTCJul 19, 16:15 UTC2h 25m

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 Jul 26, 20:40 UTC.
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.