Apparatus

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sensors Mode-S transponder

4D225C

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-QDD · BOEING 737-800

Hex
4D225C
Octal
23221134
Decimal
5,055,068
Country
MT
Tail
9H-QDD
Type
B738
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
666
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 4D225C.

Country allocation

The ICAO 24-bit address 4D225C 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
RYR20SB Ryanair 5 2026-06-09
RYR9EN Ryanair 4 2026-06-07
RYR6AX - 4 2026-06-28
RYR4239 Ryanair 4 2026-06-07
RYR3PP Ryanair 4 2026-06-09
RYR1U - 4 2026-07-22
RYR99TV Ryanair 3 2026-06-18
RYR911R - 3 2026-04-29
RYR84XH - 3 2026-06-06
RYR7QQ - 3 2026-04-15
RYR7GR Ryanair 3 2026-04-21
RYR779 Ryanair 3 2026-06-06
RYR778 Ryanair 3 2026-06-06
RYR7597 Ryanair 3 2026-06-08
RYR72EU Ryanair 3 2026-06-08
RYR6KP Ryanair 3 2026-04-29
RYR6JJ Ryanair 3 2026-06-07
RYR693D Ryanair 3 2026-06-05
RYR63JR - 3 2026-06-06
RYR5CD - 3 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR3011 MAD → PMI Jul 26, 22:45 UTCJul 26, 23:00 UTC15m
2026-07-26 RYR3012 PMI → MAD Jul 26, 20:25 UTCJul 26, 21:25 UTC1h 0m
2026-07-26 RYR78FG CGN → PMI Jul 26, 17:30 UTCJul 26, 19:20 UTC1h 50m
2026-07-26 RYR76YY WRO → BGY Jul 26, 14:50 UTCJul 26, 16:40 UTC1h 50m
2026-07-26 RYR7343 WMI → PMI Jul 26, 10:15 UTCJul 26, 13:25 UTC3h 10m
2026-07-26 RYR4JE PRG → PSA Jul 26, 04:30 UTCJul 26, 06:55 UTC2h 26m
2026-07-25 RYR53CP FMO → PMI Jul 25, 22:45 UTCJul 26, 00:45 UTC2h 0m
2026-07-25 RYR78XT PMI → FMO Jul 25, 19:25 UTCJul 25, 21:40 UTC2h 15m
2026-07-25 RYR7372 VLC → PMI Jul 25, 17:10 UTCJul 25, 17:40 UTC30m
2026-07-25 RYR24ST PMI → VLC Jul 25, 15:05 UTCJul 25, 15:35 UTC30m
2026-07-25 RYR6VW PIK → PMI Jul 25, 11:15 UTCJul 25, 13:40 UTC2h 25m
2026-07-25 RYR7NH LGW → ALC Jul 25, 07:50 UTCJul 25, 10:25 UTC2h 35m
2026-07-25 RYR3EJ MAD → BRS Jul 25, 06:00 UTCJul 25, 06:40 UTC40m
2026-07-25 RYR3SF TFS → MXP Jul 25, 04:20 UTCJul 25, 04:55 UTC35m
2026-07-24 RYR1VR - Jul 24, 21:15 UTCJul 24, 22:05 UTC50m
2026-07-24 RYR5AX PMI → MRS Jul 24, 19:30 UTCJul 24, 20:30 UTC1h 0m
2026-07-24 RYR9916 RBA → TLS Jul 24, 16:10 UTCJul 24, 18:25 UTC2h 15m
2026-07-24 RYR9915 TLS → RBA Jul 24, 12:30 UTCJul 24, 14:50 UTC2h 20m
2026-07-24 RYR22AC WAW → PMI Jul 24, 08:35 UTCJul 24, 11:05 UTC2h 30m
2026-07-24 RYR59EK PMI → WAW Jul 24, 05:00 UTCJul 24, 07:50 UTC2h 50m
2026-07-23 RYR69LP - Jul 23, 18:20 UTCJul 23, 20:55 UTC2h 35m
2026-07-23 RYR44EB PMI → WMI Jul 23, 14:40 UTCJul 23, 17:20 UTC2h 40m
2026-07-23 RYR53GE - Jul 23, 12:05 UTCJul 23, 13:25 UTC1h 20m
2026-07-23 RYR377M CIA → EMA Jul 23, 09:45 UTCJul 23, 11:00 UTC1h 15m
2026-07-23 RYR1YV - Jul 23, 07:00 UTCJul 23, 08:35 UTC1h 35m
2026-07-23 RYR18WB PMI → FMM Jul 23, 04:25 UTCJul 23, 06:10 UTC1h 45m
2026-07-22 RYR99AK BER → EMA Jul 22, 19:50 UTCJul 22, 22:00 UTC2h 10m
2026-07-22 RYR99SH - Jul 22, 16:20 UTCJul 22, 18:40 UTC2h 20m
2026-07-22 RYR6Z PFO → SOF Jul 22, 14:55 UTCJul 22, 15:20 UTC25m
2026-07-22 RYR3071 PMI → BCN Jul 22, 13:10 UTCJul 22, 13:40 UTC30m
2026-07-22 RYR1U - Jul 22, 11:25 UTCJul 22, 11:45 UTC20m
2026-07-21 RYR8SF - Jul 21, 21:00 UTCJul 21, 22:45 UTC1h 45m
2026-07-21 RYR608L - Jul 21, 18:35 UTCJul 21, 20:20 UTC1h 45m
2026-07-21 RYR453V PEG → PMO Jul 21, 15:55 UTCJul 21, 17:55 UTC2h 0m
2026-07-21 RYR70HT LPL → OPO Jul 21, 13:00 UTCJul 21, 15:05 UTC2h 5m
2026-07-21 RYR5LZ ORK → STN Jul 21, 09:20 UTCJul 21, 11:50 UTC2h 30m
2026-07-21 RYR29WR - Jul 21, 05:30 UTCJul 21, 08:00 UTC2h 30m
2026-07-20 RYR74SB - Jul 20, 21:00 UTCJul 20, 23:20 UTC2h 20m
2026-07-20 RYR59QZ - Jul 20, 17:45 UTCJul 20, 20:05 UTC2h 20m
2026-07-20 RYR23VD DUB → LPL Jul 20, 16:30 UTCJul 20, 17:00 UTC30m
2026-07-20 RYR31CD LPL → DUB Jul 20, 14:55 UTCJul 20, 15:25 UTC30m
2026-07-20 RYR4KA - Jul 20, 13:20 UTCJul 20, 13:55 UTC35m
2026-07-20 RYR42BT LPL → DUB Jul 20, 12:00 UTCJul 20, 12:30 UTC30m
2026-07-20 RYR5CD - Jul 20, 08:55 UTCJul 20, 11:10 UTC2h 15m
2026-07-20 RYR1U - Jul 20, 05:45 UTCJul 20, 07:45 UTC2h 0m
2026-07-19 RYR5225 - Jul 19, 19:40 UTCJul 19, 20:25 UTC45m
2026-07-19 RYR5224 LPL → SNN Jul 19, 18:15 UTCJul 19, 19:00 UTC45m
2026-07-19 RYR92BL - Jul 19, 15:05 UTCJul 19, 17:30 UTC2h 25m
2026-07-19 RYR8WR - Jul 19, 11:55 UTCJul 19, 14:15 UTC2h 20m
2026-07-19 RYR970U - Jul 19, 08:40 UTCJul 19, 11:05 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-QDD page for operator, model, and routing details .

Mode-S 4D225C frequently asked

What is Mode-S code 4D225C?
4D225C is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-QDD.
Where is Mode-S 4D225C registered?
Mode-S code 4D225C is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D225C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D225C, octal 23221134, decimal 5,055,068.
What flights does 4D225C operate?
Mode-S 4D225C has broadcast 20 distinct callsigns, including RYR20SB, RYR9EN, RYR6AX, RYR4239, RYR3PP.