Apparatus

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sensors Mode-S transponder

48C1BB

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RND · BOEING 737-800

Hex
48C1BB
Octal
22140673
Decimal
4,768,187
Country
PL
Tail
SP-RND
Type
B738
Broadcasting now · callsign RYR1XU · 25,450 ft
Flights observed
673
Distinct callsigns
20
Country
PL
Last broadcast
Jul 26, 22:05 UTC

Current position

48C1BB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 48C1BB 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
RYR9KY Ryanair 8 2026-05-02
RYR7VY - 8 2026-07-17
RYR45BN - 8 2026-05-02
RYR3276 - 8 2026-07-17
RYR857U Ryanair 7 2026-05-05
RYR2FY Ryanair 7 2026-05-05
RYR6RJ Ryanair 6 2026-05-04
RYR5YR Ryanair 6 2026-05-04
RYR87ZH - 5 2026-07-19
RYR85VG Ryanair 5 2026-06-04
RYR82NG Ryanair 5 2026-07-19
RYR55WG - 5 2026-06-30
RYR41FB Ryanair 5 2026-06-04
RYR39BB - 5 2026-06-30
RYR8Q - 4 2026-07-18
RYR7NJ - 4 2026-07-16
RYR79AL - 4 2026-07-16
RYR54HT - 4 2026-04-15
RYR4YD Ryanair 4 2026-04-15
RYR40NP Ryanair 4 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYS5066 - Jul 26, 19:25 UTCJul 26, 22:00 UTC2h 35m
2026-07-26 RYS5065 KTW → AYT Jul 26, 15:55 UTCJul 26, 18:20 UTC2h 25m
2026-07-26 RYS7228 - Jul 26, 12:10 UTCJul 26, 14:50 UTC2h 40m
2026-07-26 RYS12FD - Jul 26, 08:30 UTCJul 26, 10:50 UTC2h 20m
2026-07-26 RYS8KR - Jul 26, 04:05 UTCJul 26, 06:45 UTC2h 41m
2026-07-26 RYS3105 KTW → ZTH Jul 26, 00:50 UTCJul 26, 02:55 UTC2h 5m
2026-07-25 RYS7626 - Jul 25, 20:30 UTCJul 25, 22:55 UTC2h 25m
2026-07-25 RYS7175 - Jul 25, 16:35 UTCJul 25, 19:05 UTC2h 30m
2026-07-25 RYS7A - Jul 25, 13:20 UTCJul 25, 15:50 UTC2h 30m
2026-07-25 RYS7167 - Jul 25, 08:40 UTCJul 25, 11:35 UTC2h 55m
2026-07-25 RYR596 PMI → MAD Jul 25, 05:30 UTCJul 25, 07:00 UTC1h 30m
2026-07-25 RYR996 STN → BUD Jul 25, 03:25 UTCJul 25, 04:45 UTC1h 20m
2026-07-24 RYR3YV DUB → STN Jul 24, 20:15 UTCJul 24, 22:00 UTC1h 45m
2026-07-24 RYR391 WRO → BDS Jul 24, 17:55 UTCJul 24, 19:15 UTC1h 20m
2026-07-24 RYR2WQ TRF → WRO Jul 24, 15:25 UTCJul 24, 16:45 UTC1h 20m
2026-07-24 RYR67HB - Jul 24, 13:10 UTCJul 24, 14:40 UTC1h 30m
2026-07-24 RYR29EN AGP → WRO Jul 24, 08:55 UTCJul 24, 11:55 UTC3h 0m
2026-07-24 RYR31BA WRO → AGP Jul 24, 04:30 UTCJul 24, 07:45 UTC3h 15m
2026-07-23 RYR6RZ BRS → NOC Jul 23, 20:25 UTCJul 23, 21:45 UTC1h 20m
2026-07-23 RYR90RV WRO → BLQ Jul 23, 18:25 UTCJul 23, 19:30 UTC1h 5m
2026-07-23 RYR5LJ SZY → STN Jul 23, 15:55 UTCJul 23, 17:30 UTC1h 35m
2026-07-23 RYR44MW WRO → CIA Jul 23, 13:25 UTCJul 23, 14:50 UTC1h 25m
2026-07-23 RYR45TF - Jul 23, 07:55 UTCJul 23, 10:40 UTC2h 45m
2026-07-23 RYR28GH WRO → VLC Jul 23, 04:20 UTCJul 23, 06:55 UTC2h 35m
2026-07-22 RYS7714 - Jul 22, 23:00 UTCJul 23, 01:25 UTC2h 25m
2026-07-22 RYS3039 BCN → PRG Jul 22, 19:20 UTCJul 22, 21:35 UTC2h 15m
2026-07-22 RYS1KM - Jul 22, 16:00 UTCJul 22, 18:25 UTC2h 25m
2026-07-22 RYS7083 WAW → BOJ Jul 22, 12:25 UTCJul 22, 14:45 UTC2h 20m
2026-07-22 RYS5087 - Jul 22, 04:30 UTCJul 22, 10:25 UTC5h 55m
2026-07-21 RYR9BC KLU → STN Jul 21, 19:20 UTCJul 21, 22:00 UTC2h 40m
2026-07-21 RYR4603 EDI → CPH Jul 21, 15:50 UTCJul 21, 18:25 UTC2h 35m
2026-07-21 RYR80AY BVA → POZ Jul 21, 11:55 UTCJul 21, 13:30 UTC1h 35m
2026-07-21 RYR5ME DUB → TLS Jul 21, 09:35 UTCJul 21, 11:05 UTC1h 30m
2026-07-21 RYR7678 ARN → POZ Jul 21, 07:40 UTCJul 21, 08:50 UTC1h 10m
2026-07-21 RYR3CR LIL → OPO Jul 21, 05:35 UTCJul 21, 06:55 UTC1h 20m
2026-07-20 RYR8855 STN → PMI Jul 20, 22:10 UTCJul 20, 23:20 UTC1h 10m
2026-07-20 RYR60WC DUB → RIX Jul 20, 18:20 UTCJul 20, 21:00 UTC2h 40m
2026-07-20 RYR214Y RIX → DUB Jul 20, 14:40 UTCJul 20, 17:15 UTC2h 35m
2026-07-20 RYR7994 KRK → RIX Jul 20, 12:15 UTCJul 20, 13:25 UTC1h 10m
2026-07-20 RYR1SU NDR → BCN Jul 20, 10:05 UTCJul 20, 11:20 UTC1h 15m
2026-07-20 RYR9JC - Jul 20, 07:05 UTCJul 20, 09:15 UTC2h 10m
2026-07-20 RYR9MU - Jul 20, 04:00 UTCJul 20, 06:15 UTC2h 15m
2026-07-19 RYR74LL PRG → RIX Jul 19, 14:25 UTCJul 19, 15:55 UTC1h 30m
2026-07-19 RYR9619 FCO → DUB Jul 19, 12:00 UTCJul 19, 13:40 UTC1h 40m
2026-07-19 RYR87ZH - Jul 19, 07:45 UTCJul 19, 10:45 UTC3h 0m
2026-07-19 RYR82NG RMU → EMA Jul 19, 03:35 UTCJul 19, 06:55 UTC3h 20m
2026-07-18 RYR8256 - Jul 18, 20:50 UTCJul 18, 22:10 UTC1h 20m
2026-07-18 RYR8Q - Jul 18, 19:45 UTCJul 18, 19:55 UTC10m
2026-07-18 RYR8Q - Jul 18, 18:20 UTCJul 18, 19:40 UTC1h 20m
2026-07-18 RYR3289 FMM → RIX Jul 18, 15:40 UTCJul 18, 17:35 UTC1h 55m

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

Mode-S 48C1BB frequently asked

What is Mode-S code 48C1BB?
48C1BB is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RND.
Where is Mode-S 48C1BB registered?
Mode-S code 48C1BB is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C1BB broadcasting right now?
Yes. Mode-S 48C1BB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C1BB, octal 22140673, decimal 4,768,187.
What flights does 48C1BB operate?
Mode-S 48C1BB has broadcast 20 distinct callsigns, including RYR9KY, RYR7VY, RYR45BN, RYR3276, RYR857U.