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
Broadcasting now · callsign RYR17KC · 37,000 ft
Flights observed
555
Distinct callsigns
20
Country
MT
Last broadcast
30m ago

Current position

4D221E is currently broadcasting. Map zoomed to live position.

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
RYR69DC Ryanair 3 2026-04-17
RYR56DW Ryanair 3 2026-05-04
RYR3QL Ryanair 3 2026-06-02
RYR3054 Ryanair 3 2026-04-29
RYR3053 Ryanair 3 2026-04-29
RYR28MT Ryanair 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 RYR17KC - Jul 15, 08:55 UTCJul 15, 09:30 UTC35m
2026-07-15 RYR8TE - Jul 15, 04:20 UTCJul 15, 07:35 UTC3h 15m
2026-07-14 RYR9979 - Jul 14, 21:35 UTCJul 14, 22:20 UTC45m
2026-07-14 RYR1NZ - Jul 14, 19:35 UTCJul 14, 20:30 UTC55m
2026-07-14 RYR1DK BRS → ALC Jul 14, 16:15 UTCJul 14, 18:30 UTC2h 15m
2026-07-14 RYR3WX - Jul 14, 13:15 UTCJul 14, 15:20 UTC2h 5m
2026-07-14 RYR3VG ARN → ALC Jul 14, 08:25 UTCJul 14, 12:10 UTC3h 45m
2026-07-14 RYR98EF - Jul 14, 03:55 UTCJul 14, 07:25 UTC3h 30m
2026-07-13 RYR91LE - Jul 13, 19:00 UTCJul 13, 21:05 UTC2h 5m
2026-07-13 RYR69SD - Jul 13, 16:15 UTCJul 13, 18:10 UTC1h 55m
2026-07-13 RYR217V - Jul 13, 09:40 UTCJul 13, 15:25 UTC5h 45m
2026-07-12 RYR23 - Jul 12, 20:01 UTCJul 13, 08:50 UTC12h 50m
2026-07-12 RYR5CW RAK → KRK Jul 12, 10:25 UTCJul 12, 18:25 UTC8h 0m
2026-07-11 RYR84AL - Jul 11, 23:10 UTCJul 12, 09:20 UTC10h 10m
2026-07-11 RYR8205 - Jul 11, 17:45 UTCJul 11, 22:15 UTC4h 30m
2026-07-11 RYR86TK - Jul 11, 09:40 UTCJul 11, 16:30 UTC6h 50m
2026-07-10 RYR99PH - Jul 10, 17:20 UTCJul 11, 08:20 UTC15h 1m
2026-07-10 RYR6499 - Jul 10, 08:30 UTCJul 10, 16:05 UTC7h 35m
2026-07-10 RYR9JB - Jul 10, 05:15 UTCJul 10, 07:30 UTC2h 15m
2026-07-09 RYR23 - Jul 9, 19:00 UTCJul 9, 22:55 UTC3h 55m
2026-07-09 RYR5CW RAK → KRK Jul 9, 14:15 UTCJul 9, 18:10 UTC3h 55m
2026-07-09 RYR54FF - Jul 9, 09:00 UTCJul 9, 11:45 UTC2h 45m
2026-07-08 RYR816C - Jul 8, 22:05 UTCJul 9, 08:05 UTC10h 0m
2026-07-08 RYR18CJ - Jul 8, 17:05 UTCJul 8, 18:55 UTC1h 50m
2026-07-08 RYR28SH - Jul 8, 09:35 UTCJul 8, 16:00 UTC6h 25m
2026-07-07 RYR517R - Jul 7, 20:45 UTCJul 8, 08:00 UTC11h 15m
2026-07-07 RYR109X RAK → DUB Jul 7, 09:35 UTCJul 7, 19:40 UTC10h 5m
2026-07-06 RYR7422 - Jul 6, 21:35 UTCJul 7, 08:35 UTC11h 0m
2026-07-06 RYR89XK BER → MXP Jul 6, 10:45 UTCJul 6, 20:25 UTC9h 40m
2026-07-05 RYR127K - Jul 5, 20:50 UTCJul 6, 09:50 UTC13h 0m
2026-07-05 RYR23 - Jul 5, 19:40 UTCJul 5, 20:45 UTC1h 5m
2026-07-05 RYR5CW RAK → KRK Jul 5, 10:40 UTCJul 5, 18:45 UTC8h 5m
2026-07-05 RYR84AL - Jul 5, 07:00 UTCJul 5, 09:45 UTC2h 45m
2026-07-04 RYR7AC - Jul 4, 20:05 UTCJul 4, 23:00 UTC2h 55m
2026-07-04 RYR86TK BUD → BRU Jul 4, 09:45 UTCJul 4, 18:15 UTC8h 30m
2026-07-04 RYR42CL - Jul 4, 05:05 UTCJul 4, 08:30 UTC3h 25m
2026-07-03 RYR99PH - Jul 3, 17:25 UTCJul 3, 21:05 UTC3h 40m
2026-07-03 RYR6499 - Jul 3, 08:45 UTCJul 3, 16:20 UTC7h 35m
2026-07-03 RYR9JB - Jul 3, 05:20 UTCJul 3, 07:30 UTC2h 10m
2026-07-02 RYR23 - Jul 2, 19:45 UTCJul 2, 23:25 UTC3h 40m
2026-07-02 RYR5CW RAK → KRK Jul 2, 14:40 UTCJul 2, 18:25 UTC3h 45m
2026-07-02 RYR54FF - Jul 2, 09:05 UTCJul 2, 11:50 UTC2h 45m
2026-07-02 RYR816C - Jul 2, 05:20 UTCJul 2, 08:20 UTC3h 0m
2026-07-01 RYR30KM - Jul 1, 20:25 UTCJul 1, 23:05 UTC2h 40m
2026-07-01 RYR84AL - Jul 1, 15:35 UTCJul 1, 18:35 UTC3h 0m
2026-07-01 RYR86TK - Jul 1, 09:45 UTCJul 1, 13:10 UTC3h 25m
2026-07-01 RYR42CL - Jul 1, 05:10 UTCJul 1, 08:50 UTC3h 40m
2026-06-30 RYR517R - Jun 30, 20:50 UTCJun 30, 23:30 UTC2h 40m
2026-06-30 RYR109X RAK → DUB Jun 30, 16:30 UTCJun 30, 19:50 UTC3h 20m
2026-06-30 RYR217V - Jun 30, 09:30 UTCJun 30, 11:55 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-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?
Yes. Mode-S 4D221E is currently airborne.
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.