Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

48C235

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RSZ · BOEING 737-800

Hex
48C235
Octal
22141065
Decimal
4,768,309
Country
PL
Tail
SP-RSZ
Type
B738
No current signal · last broadcast 1h ago
Flights observed
577
Distinct callsigns
20
Country
PL
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 48C235.

Country allocation

The ICAO 24-bit address 48C235 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
RYR1502 - 12 2026-06-28
RYR1501 - 12 2026-06-28
RYR4978 - 11 2026-07-02
RYR219K - 11 2026-07-02
RYR159P - 10 2026-07-02
RYR13PB - 10 2026-07-02
RYR786D - 8 2026-07-03
RYR9NH - 7 2026-06-30
RYR9154 - 7 2026-06-26
RYR77HE - 7 2026-07-02
RYR49MG - 7 2026-07-02
RYR34RH - 7 2026-06-26
RYR198 - 7 2026-06-30
RYR7654 - 6 2026-06-29
RYR1KL - 6 2026-06-30
RYR85QU - 5 2026-06-30
RYR84KW - 5 2026-06-30
RYR1EX - 5 2026-06-30
RYR75HH - 4 2026-07-03
RYR7139 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR4603 - Jul 14, 15:50 UTCJul 14, 17:15 UTC1h 25m
2026-07-14 RYS908 - Jul 14, 12:25 UTCJul 14, 13:35 UTC1h 10m
2026-07-14 RYS9831 - Jul 14, 10:45 UTCJul 14, 11:35 UTC50m
2026-07-14 RYS907 - Jul 14, 07:50 UTCJul 14, 08:30 UTC40m
2026-07-14 RYS12 - Jul 14, 04:10 UTCJul 14, 06:55 UTC2h 45m
2026-07-14 RYS66M POZ → AYT Jul 14, 00:15 UTCJul 14, 02:55 UTC2h 40m
2026-07-13 RYR3ZC - Jul 13, 19:35 UTCJul 13, 21:40 UTC2h 5m
2026-07-13 RYR46SV - Jul 13, 16:40 UTCJul 13, 18:40 UTC2h 0m
2026-07-13 RYR88GF - Jul 13, 14:25 UTCJul 13, 15:40 UTC1h 15m
2026-07-13 RYR58CQ - Jul 13, 12:15 UTCJul 13, 13:30 UTC1h 15m
2026-07-13 RYS31AR KVA → POZ Jul 13, 08:45 UTCJul 13, 10:50 UTC2h 5m
2026-07-13 RYS5009 - Jul 13, 05:50 UTCJul 13, 07:45 UTC1h 55m
2026-07-13 RYS1GK - Jul 13, 01:45 UTCJul 13, 04:25 UTC2h 40m
2026-07-12 RYS6MF POZ → RHO Jul 12, 22:25 UTCJul 13, 01:05 UTC2h 40m
2026-07-12 RYR472L - Jul 12, 18:05 UTCJul 12, 19:25 UTC1h 20m
2026-07-12 RYR741D - Jul 12, 15:45 UTCJul 12, 16:55 UTC1h 10m
2026-07-12 RYR7TV DBV → POZ Jul 12, 13:15 UTCJul 12, 14:55 UTC1h 40m
2026-07-12 RYR98FC POZ → DBV Jul 12, 10:55 UTCJul 12, 12:30 UTC1h 35m
2026-07-12 RYR3ZC - Jul 12, 07:55 UTCJul 12, 10:05 UTC2h 10m
2026-07-12 RYR46SV - Jul 12, 04:55 UTCJul 12, 07:01 UTC2h 5m
2026-07-11 RYR9734 - Jul 11, 17:35 UTCJul 11, 18:50 UTC1h 15m
2026-07-11 RYR9733 BVA → AMM Jul 11, 15:25 UTCJul 11, 16:45 UTC1h 20m
2026-07-11 RYR12KD - Jul 11, 12:55 UTCJul 11, 14:30 UTC1h 35m
2026-07-11 RYR8PJ POZ → STN Jul 11, 10:15 UTCJul 11, 11:55 UTC1h 40m
2026-07-11 RYR1TU - Jul 11, 07:05 UTCJul 11, 09:15 UTC2h 10m
2026-07-11 RYR5VM - Jul 11, 04:05 UTCJul 11, 06:15 UTC2h 10m
2026-07-10 RYR12KD STN → POZ Jul 10, 20:00 UTCJul 10, 21:35 UTC1h 35m
2026-07-10 RYR8PJ POZ → STN Jul 10, 17:20 UTCJul 10, 19:00 UTC1h 40m
2026-07-10 RYR7949 BRS → POZ Jul 10, 14:50 UTCJul 10, 16:40 UTC1h 50m
2026-07-10 RYR9WM POZ → BRS Jul 10, 11:55 UTCJul 10, 13:55 UTC2h 0m
2026-07-10 RYR64HB - Jul 10, 09:15 UTCJul 10, 10:35 UTC1h 20m
2026-07-10 RYR7SY - Jul 10, 07:00 UTCJul 10, 08:05 UTC1h 5m
2026-07-10 RYR8521 - Jul 10, 05:35 UTCJul 10, 06:15 UTC40m
2026-07-10 RYR85AP POZ → PRG Jul 10, 04:15 UTCJul 10, 04:50 UTC35m
2026-07-09 RYR6GD - Jul 9, 21:25 UTCJul 9, 22:55 UTC1h 30m
2026-07-09 RYR430N POZ → STN Jul 9, 18:55 UTCJul 9, 20:30 UTC1h 35m
2026-07-09 RYR1216 - Jul 9, 16:05 UTCJul 9, 18:05 UTC2h 0m
2026-07-09 RYR1217 - Jul 9, 13:30 UTCJul 9, 15:10 UTC1h 40m
2026-07-09 RYR65LU - Jul 9, 10:25 UTCJul 9, 11:45 UTC1h 20m
2026-07-09 RYR86TA - Jul 9, 08:25 UTCJul 9, 09:35 UTC1h 10m
2026-07-09 RYR86TA - Jul 9, 07:50 UTCJul 9, 08:15 UTC25m
2026-07-09 RYR88GF - Jul 9, 06:15 UTCJul 9, 07:40 UTC1h 25m
2026-07-09 RYR58CQ POZ → TSF Jul 9, 04:10 UTCJul 9, 05:20 UTC1h 10m
2026-07-08 RYR1146 - Jul 8, 21:45 UTCJul 8, 22:20 UTC35m
2026-07-08 RYR1146 KRK → KRK Jul 8, 21:05 UTCJul 8, 21:35 UTC30m
2026-07-08 RYR9ZE - Jul 8, 18:40 UTCJul 8, 21:00 UTC2h 20m
2026-07-08 RYR1AK - Jul 8, 15:25 UTCJul 8, 17:20 UTC1h 55m
2026-07-08 RYR6783 TRS → KRK Jul 8, 13:10 UTCJul 8, 14:20 UTC1h 10m
2026-07-08 RYR6782 KRK → TRS Jul 8, 11:05 UTCJul 8, 12:10 UTC1h 5m
2026-07-08 RYR467T - Jul 8, 07:50 UTCJul 8, 09:55 UTC2h 5m

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

Mode-S 48C235 frequently asked

What is Mode-S code 48C235?
48C235 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RSZ.
Where is Mode-S 48C235 registered?
Mode-S code 48C235 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C235 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C235, octal 22141065, decimal 4,768,309.
What flights does 48C235 operate?
Mode-S 48C235 has broadcast 20 distinct callsigns, including RYR1502, RYR1501, RYR4978, RYR219K, RYR159P.