Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4D225B

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D225B
Octal
23221133
Decimal
5,055,067
Country
MT
Tail
9H-QCU
Type
B738
No current signal · last broadcast 10h ago
Flights observed
599
Distinct callsigns
20
Country
MT
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4D225B.

Country allocation

The ICAO 24-bit address 4D225B 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
RYR7PF Ryanair 10 2026-04-22
RYR4YM Ryanair 8 2026-04-22
RYR6TY Ryanair 6 2026-05-30
RYR6LT Ryanair 6 2026-05-30
RYR33TU Ryanair 6 2026-04-17
RYR21YW Ryanair 6 2026-04-17
RYR7YX Ryanair 5 2026-04-20
RYR559X Ryanair 5 2026-04-20
RYR9GW Ryanair 4 2026-05-29
RYR6JW - 4 2026-04-21
RYR68BJ Ryanair 4 2026-05-17
RYR669 Ryanair 4 2026-05-17
RYR62MD Ryanair 4 2026-04-22
RYR58NF Ryanair 4 2026-04-22
RYR96SR Ryanair 3 2026-05-25
RYR8ZF - 3 2026-06-28
RYR86FZ - 3 2026-06-28
RYR84TT - 3 2026-06-30
RYR7W - 3 2026-06-24
RYR7SZ - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR27UC - Jul 14, 19:45 UTCJul 14, 21:10 UTC1h 25m
2026-07-14 RYR3BW - Jul 14, 18:15 UTCJul 14, 19:05 UTC50m
2026-07-14 RYR81SV - Jul 14, 16:20 UTCJul 14, 17:15 UTC55m
2026-07-14 RYR7HN DUB → STN Jul 14, 14:15 UTCJul 14, 15:15 UTC1h 0m
2026-07-14 RYR72TB NCE → DUB Jul 14, 11:00 UTCJul 14, 13:20 UTC2h 20m
2026-07-14 RYR42QV DUB → NCE Jul 14, 06:15 UTCJul 14, 08:20 UTC2h 5m
2026-07-13 RYR7SZ VCE → DUB Jul 13, 22:25 UTCJul 14, 00:45 UTC2h 20m
2026-07-13 RYR1BT DUB → VCE Jul 13, 19:25 UTCJul 13, 21:35 UTC2h 10m
2026-07-13 RYR54WQ - Jul 13, 18:05 UTCJul 13, 18:35 UTC30m
2026-07-13 RYR21DG - Jul 13, 16:20 UTCJul 13, 16:55 UTC35m
2026-07-13 RYR13PD - Jul 13, 11:40 UTCJul 13, 14:15 UTC2h 35m
2026-07-13 RYR39DE - Jul 13, 07:30 UTCJul 13, 10:20 UTC2h 50m
2026-07-12 RYR81 - Jul 12, 22:25 UTCJul 12, 23:40 UTC1h 15m
2026-07-12 RYR41MD MXP → STN Jul 12, 19:45 UTCJul 12, 21:20 UTC1h 35m
2026-07-12 RYR2FF - Jul 12, 17:10 UTCJul 12, 18:35 UTC1h 25m
2026-07-12 RYR29AM - Jul 12, 14:35 UTCJul 12, 16:05 UTC1h 30m
2026-07-12 RYR6WD - Jul 12, 12:10 UTCJul 12, 13:35 UTC1h 25m
2026-07-12 RYR64TN BCN → STN Jul 12, 08:55 UTCJul 12, 10:50 UTC1h 55m
2026-07-12 RYR20ZE - Jul 12, 05:50 UTCJul 12, 07:40 UTC1h 50m
2026-07-11 RYR76GA - Jul 11, 21:15 UTCJul 11, 22:10 UTC55m
2026-07-11 RYR484F - Jul 11, 19:15 UTCJul 11, 20:15 UTC1h 0m
2026-07-11 RYR2VJ - Jul 11, 16:00 UTCJul 11, 18:15 UTC2h 15m
2026-07-11 RYR7QN - Jul 11, 11:50 UTCJul 11, 13:55 UTC2h 5m
2026-07-11 RYR24YX BZG → STN Jul 11, 09:00 UTCJul 11, 10:45 UTC1h 45m
2026-07-11 RYR4DZ - Jul 11, 06:40 UTCJul 11, 08:20 UTC1h 40m
2026-07-10 RYR3TN - Jul 10, 22:05 UTCJul 10, 23:40 UTC1h 35m
2026-07-10 RYR40MM - Jul 10, 19:15 UTCJul 10, 20:50 UTC1h 35m
2026-07-10 RYR3BW - Jul 10, 17:40 UTCJul 10, 18:30 UTC50m
2026-07-10 RYR6MK FAO → DUB Jul 10, 11:35 UTCJul 10, 14:00 UTC2h 25m
2026-07-10 RYR9NN - Jul 10, 08:25 UTCJul 10, 10:45 UTC2h 20m
2026-07-09 RYR12KH - Jul 9, 18:30 UTCJul 9, 20:55 UTC2h 25m
2026-07-09 RYR3FF - Jul 9, 14:40 UTCJul 9, 17:10 UTC2h 30m
2026-07-09 RYR5WW - Jul 9, 12:10 UTCJul 9, 13:15 UTC1h 5m
2026-07-09 RYR1LC DUB → AMS Jul 9, 10:05 UTCJul 9, 11:10 UTC1h 5m
2026-07-09 RYR50NB - Jul 9, 08:05 UTCJul 9, 09:10 UTC1h 5m
2026-07-09 RYR66DT - Jul 9, 05:50 UTCJul 9, 07:05 UTC1h 15m
2026-07-08 RYR459M - Jul 8, 20:00 UTCJul 8, 20:40 UTC40m
2026-07-08 RYR2SH DUB → EDI Jul 8, 18:30 UTCJul 8, 19:15 UTC45m
2026-07-08 RYR7366 VIE → DUB Jul 8, 15:10 UTCJul 8, 17:40 UTC2h 30m
2026-07-08 RYR14GC DUB → VIE Jul 8, 12:00 UTCJul 8, 14:10 UTC2h 10m
2026-07-08 RYR535 EMA → DUB Jul 8, 09:45 UTCJul 8, 10:25 UTC40m
2026-07-08 RYR5FW - Jul 8, 05:10 UTCJul 8, 05:20 UTC10m
2026-07-07 RYR1EU - Jul 7, 21:45 UTCJul 7, 23:50 UTC2h 5m
2026-07-07 RYR3RR - Jul 7, 18:30 UTCJul 7, 20:30 UTC2h 0m
2026-07-07 RYR21DB LIG → EMA Jul 7, 16:20 UTCJul 7, 17:35 UTC1h 15m
2026-07-07 RYR3TZ LBA → WRO Jul 7, 14:05 UTCJul 7, 15:10 UTC1h 5m
2026-07-07 RYR8PK - Jul 7, 10:55 UTCJul 7, 13:10 UTC2h 15m
2026-07-07 RYR95QF EMA → ALC Jul 7, 07:40 UTCJul 7, 09:50 UTC2h 10m
2026-07-06 RYR4BZ - Jul 6, 22:00 UTCJul 7, 00:10 UTC2h 10m
2026-07-06 RYR7GD - Jul 6, 18:35 UTCJul 6, 20:35 UTC2h 0m

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

Mode-S 4D225B frequently asked

What is Mode-S code 4D225B?
4D225B is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-QCU.
Where is Mode-S 4D225B registered?
Mode-S code 4D225B is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D225B broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D225B, octal 23221133, decimal 5,055,067.
What flights does 4D225B operate?
Mode-S 4D225B has broadcast 20 distinct callsigns, including RYR7PF, RYR4YM, RYR6TY, RYR6LT, RYR33TU.