Apparatus

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sensors Mode-S transponder

4D221E

ICAO 24-bit transponder address · allocated to Malta

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

Hex
4D221E
Octal
23221036
Decimal
5,055,006
Country
MT
Tail
9H-QEB
Type
B738
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
633
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S 4D221E.

Country allocation

The ICAO 24-bit address 4D221E 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
RYR4K Ryanair 6 2026-04-15
RYR95HJ Ryanair 5 2026-04-15
RYR5CW Ryanair 5 2026-07-12
RYR23 - 5 2026-07-12
RYR8NX Ryanair 4 2026-05-31
RYR89TL Ryanair 4 2026-06-14
RYR84AL - 4 2026-07-11
RYR68AB Ryanair 4 2026-06-14
RYR64YL Ryanair 4 2026-04-15
RYR42CG Ryanair 4 2026-05-31
RYR1139 Ryanair 4 2026-05-26
RYR90TC Ryanair 3 2026-04-15
RYR86TK - 3 2026-07-11
RYR818W - 3 2026-04-17
RYR7ZU Ryanair 3 2026-07-26
RYR69DC Ryanair 3 2026-04-17
RYR61FA Ryanair 3 2026-07-26
RYR56DW Ryanair 3 2026-05-04
RYR3QL Ryanair 3 2026-06-02
RYR3054 Ryanair 3 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR61FA CGN → DUB Jul 26, 19:55 UTCJul 26, 21:30 UTC1h 35m
2026-07-26 RYR7ZU DBV → WRO Jul 26, 17:40 UTCJul 26, 18:55 UTC1h 15m
2026-07-26 RYR3QK - Jul 26, 15:10 UTCJul 26, 16:35 UTC1h 25m
2026-07-26 RYR83SZ DUB → BRU Jul 26, 12:55 UTCJul 26, 14:05 UTC1h 10m
2026-07-26 RYR3BE AGP → DUB Jul 26, 09:30 UTCJul 26, 11:35 UTC2h 5m
2026-07-26 RYR50WQ DUB → FMM Jul 26, 06:45 UTCJul 26, 08:25 UTC1h 40m
2026-07-25 RYR41RE BSL → ZAG Jul 25, 19:55 UTCJul 25, 22:45 UTC2h 50m
2026-07-25 RYR41RE BSL → ZAG Jul 25, 18:55 UTCJul 25, 19:40 UTC45m
2026-07-25 RYR1UD DUB → TFS Jul 25, 14:00 UTCJul 25, 17:30 UTC3h 30m
2026-07-25 RYR42BT LPL → DUB Jul 25, 11:50 UTCJul 25, 12:20 UTC30m
2026-07-25 RYR4KA MAD → CRL Jul 25, 10:30 UTCJul 25, 11:00 UTC30m
2026-07-25 RYR2AF MLA → PFO Jul 25, 07:35 UTCJul 25, 09:35 UTC2h 0m
2026-07-25 RYR31UZ DUB → SCQ Jul 25, 05:10 UTCJul 25, 06:45 UTC1h 35m
2026-07-24 RYR61FA CGN → DUB Jul 24, 21:00 UTCJul 24, 22:30 UTC1h 30m
2026-07-24 RYR7ZU DBV → WRO Jul 24, 18:40 UTCJul 24, 20:05 UTC1h 25m
2026-07-24 RYR63DQ STN → WRO Jul 24, 15:20 UTCJul 24, 17:45 UTC2h 25m
2026-07-24 RYR2FL - Jul 24, 12:50 UTCJul 24, 14:10 UTC1h 20m
2026-07-24 RYR3915 RMI → CTA Jul 24, 08:55 UTCJul 24, 09:50 UTC55m
2026-07-24 RYR3914 CTA → RMI Jul 24, 06:05 UTCJul 24, 07:15 UTC1h 10m
2026-07-23 RYR48ML TRN → CTA Jul 23, 20:25 UTCJul 23, 21:45 UTC1h 20m
2026-07-23 RYR4UY RAK → TLS Jul 23, 17:55 UTCJul 23, 19:35 UTC1h 40m
2026-07-23 RYR4891 FCO → CTA Jul 23, 16:00 UTCJul 23, 16:45 UTC45m
2026-07-23 RYR80HG CTA → FCO Jul 23, 13:50 UTCJul 23, 14:45 UTC55m
2026-07-23 RYR5GF PEG → CTA Jul 23, 10:55 UTCJul 23, 11:50 UTC55m
2026-07-23 RYR12NV - Jul 23, 08:50 UTCJul 23, 10:00 UTC1h 10m
2026-07-23 RYR26TR - Jul 23, 06:35 UTCJul 23, 07:45 UTC1h 10m
2026-07-23 RYR3HY BVA → FAO Jul 23, 04:05 UTCJul 23, 05:25 UTC1h 20m
2026-07-22 RYR2AT NAP → CTA Jul 22, 21:20 UTCJul 22, 22:00 UTC40m
2026-07-22 RYR256T CTA → NAP Jul 22, 19:30 UTCJul 22, 20:15 UTC45m
2026-07-22 RYR9389 BCN → EMA Jul 22, 15:40 UTCJul 22, 16:35 UTC55m
2026-07-22 RYR2056 AGA → VIE Jul 22, 13:55 UTCJul 22, 14:45 UTC50m
2026-07-22 RYR2055 - Jul 22, 12:15 UTCJul 22, 13:10 UTC55m
2026-07-21 RYR6411 - Jul 21, 21:20 UTCJul 21, 22:40 UTC1h 20m
2026-07-21 RYR6412 PSR → KUN Jul 21, 17:55 UTCJul 21, 19:55 UTC2h 0m
2026-07-21 RYR74RW ORK → LGW Jul 21, 15:30 UTCJul 21, 16:55 UTC1h 25m
2026-07-21 RYR88TZ - Jul 21, 13:15 UTCJul 21, 14:40 UTC1h 25m
2026-07-21 RYR2056 AGA → VIE Jul 21, 11:30 UTCJul 21, 12:20 UTC50m
2026-07-21 RYR2055 - Jul 21, 09:30 UTCJul 21, 10:30 UTC1h 0m
2026-07-21 RYR67VZ - Jul 21, 07:05 UTCJul 21, 08:40 UTC1h 35m
2026-07-21 RYR401W - Jul 21, 04:30 UTCJul 21, 06:15 UTC1h 45m
2026-07-20 RYR9433 MXP → PSR Jul 20, 20:05 UTCJul 20, 21:00 UTC55m
2026-07-20 RYR9432 BLL → TLL Jul 20, 18:05 UTCJul 20, 19:10 UTC1h 5m
2026-07-20 RYR5GT TPS → PSA Jul 20, 15:40 UTCJul 20, 17:15 UTC1h 35m
2026-07-20 RYR2TR KRK → BVA Jul 20, 13:05 UTCJul 20, 14:50 UTC1h 45m
2026-07-20 RYR23BM STN → PRG Jul 20, 11:00 UTCJul 20, 11:50 UTC50m
2026-07-20 RYR9081 PSR → MXP Jul 20, 09:10 UTCJul 20, 10:05 UTC55m
2026-07-20 RYR10UK CRL → PSR Jul 20, 06:50 UTCJul 20, 08:30 UTC1h 40m
2026-07-20 RYR80KA - Jul 20, 03:50 UTCJul 20, 05:35 UTC1h 45m
2026-07-19 RYR984 - Jul 19, 23:20 UTCJul 20, 00:00 UTC40m
2026-07-19 RYR984 - Jul 19, 22:05 UTCJul 19, 23:15 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-QEB page for operator, model, and routing details .

Mode-S 4D221E frequently asked

What is Mode-S code 4D221E?
4D221E is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-QEB.
Where is Mode-S 4D221E registered?
Mode-S code 4D221E is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D221E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D221E, octal 23221036, decimal 5,055,006.
What flights does 4D221E operate?
Mode-S 4D221E has broadcast 20 distinct callsigns, including RYR4K, RYR95HJ, RYR5CW, RYR23, RYR8NX.