Apparatus

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sensors Mode-S transponder

48C133

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RKU · BOEING 737-800

Hex
48C133
Octal
22140463
Decimal
4,768,051
Country
PL
Tail
SP-RKU
Type
B738
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
697
Distinct callsigns
20
Country
PL
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 48C133.

Country allocation

The ICAO 24-bit address 48C133 falls within the block assigned to Poland (PL) by ICAO Annex 10, Volume III. Every aircraft registered in Poland 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
RYR9NY Ryanair 7 2026-06-01
RYR857U Ryanair 7 2026-07-16
RYR6VR Ryanair 7 2026-06-01
RYR2FY Ryanair 7 2026-07-16
RYR94CD Ryanair 6 2026-07-17
RYR6RJ - 6 2026-07-18
RYR5BK - 6 2026-07-17
RYR4YP Ryanair 6 2026-06-16
RYR3HP Ryanair 6 2026-06-16
RYR9KY - 5 2026-07-12
RYR7JW Ryanair 5 2026-05-23
RYR7HH Ryanair 5 2026-06-02
RYR6MU Ryanair 5 2026-04-18
RYR6843 Ryanair 5 2026-07-19
RYR6842 Ryanair 5 2026-07-19
RYR5YR - 5 2026-07-13
RYR45BN - 5 2026-07-12
RYR3CL - 5 2026-07-19
RYR34XQ Ryanair 5 2026-06-02
RYR2QD Ryanair 5 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYS29GN - Jul 26, 22:30 UTCJul 26, 22:45 UTC15m
2026-07-26 RYR7GH VCE → MAD Jul 26, 18:20 UTCJul 26, 19:05 UTC45m
2026-07-26 RYR9LF PSA → PMO Jul 26, 16:30 UTCJul 26, 17:15 UTC45m
2026-07-26 RYR9095 BGY → GDN Jul 26, 13:05 UTCJul 26, 14:45 UTC1h 40m
2026-07-26 RYR43DL ZAD → EDI Jul 26, 10:35 UTCJul 26, 12:10 UTC1h 35m
2026-07-26 RYS792B - Jul 26, 04:25 UTCJul 26, 06:55 UTC2h 31m
2026-07-26 RYS3117 - Jul 26, 01:45 UTCJul 26, 03:35 UTC1h 50m
2026-07-25 RYR55WG BGY → GDN Jul 25, 22:05 UTCJul 25, 23:40 UTC1h 35m
2026-07-25 RYR61TF - Jul 25, 19:40 UTCJul 25, 20:55 UTC1h 15m
2026-07-25 RYR7672 GLA → WRO Jul 25, 16:15 UTCJul 25, 18:10 UTC1h 55m
2026-07-25 RYR81JY ACE → BER Jul 25, 13:10 UTCJul 25, 15:35 UTC2h 25m
2026-07-25 RYR3YV DUB → STN Jul 25, 10:15 UTCJul 25, 11:55 UTC1h 40m
2026-07-25 RYR391 WRO → BDS Jul 25, 07:00 UTCJul 25, 08:25 UTC1h 25m
2026-07-24 RYR7GN SKG → FCO Jul 24, 18:50 UTCJul 24, 21:05 UTC2h 15m
2026-07-24 RYR691H CPH → MAN Jul 24, 15:25 UTCJul 24, 17:40 UTC2h 15m
2026-07-24 RYR5LJ SZY → STN Jul 24, 12:30 UTCJul 24, 14:15 UTC1h 45m
2026-07-24 RYR44MW WRO → CIA Jul 24, 10:15 UTCJul 24, 11:35 UTC1h 20m
2026-07-24 RYR913W STN → WRO Jul 24, 07:45 UTCJul 24, 09:20 UTC1h 35m
2026-07-24 RYR58GD BUD → OPO Jul 24, 05:00 UTCJul 24, 06:50 UTC1h 50m
2026-07-24 RYR977 FMM → TFS Jul 24, 00:10 UTCJul 24, 00:35 UTC25m
2026-07-23 RYS712 - Jul 23, 21:05 UTCJul 23, 23:15 UTC2h 10m
2026-07-23 RYS7119 POZ → ADB Jul 23, 17:50 UTCJul 23, 20:00 UTC2h 10m
2026-07-23 RYR995 - Jul 23, 16:25 UTCJul 23, 16:55 UTC30m
2026-07-23 RYR68WJ LBA → WRO Jul 23, 13:00 UTCJul 23, 14:55 UTC1h 55m
2026-07-23 RYR8KQ ORK → STN Jul 23, 10:25 UTCJul 23, 12:15 UTC1h 50m
2026-07-23 RYR40YG - Jul 23, 07:40 UTCJul 23, 09:35 UTC1h 55m
2026-07-23 RYR69XZ - Jul 23, 05:05 UTCJul 23, 06:55 UTC1h 50m
2026-07-22 RYR19PH - Jul 22, 21:25 UTCJul 22, 22:25 UTC1h 0m
2026-07-22 RYR653Z - Jul 22, 19:15 UTCJul 22, 20:10 UTC55m
2026-07-22 RYR7672 GLA → WRO Jul 22, 16:25 UTCJul 22, 18:25 UTC2h 0m
2026-07-22 RYR81JY - Jul 22, 12:50 UTCJul 22, 15:10 UTC2h 20m
2026-07-22 RYR9694 FMM → ACE Jul 22, 11:10 UTCJul 22, 11:45 UTC35m
2026-07-22 RYR608Y WRO → BVA Jul 22, 04:00 UTCJul 22, 05:25 UTC1h 25m
2026-07-21 RYR6RZ BRS → NOC Jul 21, 21:40 UTCJul 21, 22:55 UTC1h 15m
2026-07-21 RYR90RV - Jul 21, 19:20 UTCJul 21, 20:35 UTC1h 15m
2026-07-21 RYR96SW CRL → WRO Jul 21, 17:05 UTCJul 21, 18:20 UTC1h 15m
2026-07-21 RYR672C WRO → CRL Jul 21, 15:00 UTCJul 21, 16:20 UTC1h 20m
2026-07-21 RYS7036 VAR → WRO Jul 21, 11:10 UTCJul 21, 13:55 UTC2h 45m
2026-07-21 RYS1MF - Jul 21, 07:30 UTCJul 21, 10:05 UTC2h 35m
2026-07-21 RYS933 POZ → PRG Jul 21, 04:25 UTCJul 21, 06:35 UTC2h 10m
2026-07-21 RYS9841 - Jul 21, 01:25 UTCJul 21, 03:15 UTC1h 50m
2026-07-20 RYS935 DUS → BUD Jul 20, 23:50 UTCJul 21, 00:20 UTC30m
2026-07-20 RYS3KE - Jul 20, 20:05 UTCJul 20, 22:35 UTC2h 30m
2026-07-20 RYS3003 KTW → PVK Jul 20, 15:45 UTCJul 20, 18:30 UTC2h 45m
2026-07-20 RYS3004 RHO → POZ Jul 20, 11:45 UTCJul 20, 14:30 UTC2h 45m
2026-07-20 RYS211Q RZE → RHO Jul 20, 08:30 UTCJul 20, 10:45 UTC2h 15m
2026-07-20 RYS3008 KGS → KTW Jul 20, 04:20 UTCJul 20, 06:35 UTC2h 15m
2026-07-20 RYS59JR - Jul 20, 00:40 UTCJul 20, 03:10 UTC2h 30m
2026-07-19 RYR4106 - Jul 19, 21:10 UTCJul 19, 21:25 UTC15m
2026-07-19 RYR8N BRS → DUB Jul 19, 19:20 UTCJul 19, 20:00 UTC40m

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 SP-RKU page for operator, model, and routing details .

Mode-S 48C133 frequently asked

What is Mode-S code 48C133?
48C133 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RKU.
Where is Mode-S 48C133 registered?
Mode-S code 48C133 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C133 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C133, octal 22140463, decimal 4,768,051.
What flights does 48C133 operate?
Mode-S 48C133 has broadcast 20 distinct callsigns, including RYR9NY, RYR857U, RYR6VR, RYR2FY, RYR94CD.