Apparatus

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sensors Mode-S transponder

48C12D

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RKN · BOEING 737-800

Hex
48C12D
Octal
22140455
Decimal
4,768,045
Country
PL
Tail
SP-RKN
Type
B738
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
649
Distinct callsigns
20
Country
PL
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 48C12D.

Country allocation

The ICAO 24-bit address 48C12D 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 Ryanair 19 2026-06-04
RYR1501 Ryanair 18 2026-06-04
RYR159P Ryanair 13 2026-06-01
RYR13PB Ryanair 13 2026-06-01
RYR786D Ryanair 10 2026-06-05
RYR7654 Ryanair 9 2026-06-01
RYR6JD Ryanair 9 2026-06-02
RYR42UP Ryanair 9 2026-06-02
RYR4978 Ryanair 8 2026-06-03
RYR219K Ryanair 8 2026-06-03
RYR4RQ - 7 2026-06-04
RYR15BH Ryanair 7 2026-06-04
RYR8365 Ryanair 6 2026-06-01
RYR4FN - 6 2026-07-08
RYR44PV - 6 2026-07-08
RYR9NH Ryanair 5 2026-05-26
RYR973Z Ryanair 5 2026-06-04
RYR8MA Ryanair 5 2026-05-29
RYR8FJ - 5 2026-07-12
RYR8366 Ryanair 5 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR95LQ - Jul 26, 19:45 UTCJul 26, 21:15 UTC1h 30m
2026-07-26 RYR2CW STN → EIN Jul 26, 17:25 UTCJul 26, 18:50 UTC1h 25m
2026-07-26 RYR91JL - Jul 26, 15:05 UTCJul 26, 16:40 UTC1h 35m
2026-07-26 RYR49YD - Jul 26, 12:15 UTCJul 26, 13:55 UTC1h 40m
2026-07-26 RYR4YD BVA → EDI Jul 26, 07:25 UTCJul 26, 10:05 UTC2h 40m
2026-07-26 RYR54HT - Jul 26, 04:05 UTCJul 26, 06:20 UTC2h 15m
2026-07-25 RYR49BG LIS → BGY Jul 25, 20:20 UTCJul 25, 23:25 UTC3h 5m
2026-07-25 RYR2DD BTS → JSI Jul 25, 15:10 UTCJul 25, 18:15 UTC3h 5m
2026-07-25 RYR95LQ - Jul 25, 12:25 UTCJul 25, 14:05 UTC1h 40m
2026-07-25 RYR95WA DUB → SOF Jul 25, 07:50 UTCJul 25, 10:55 UTC3h 5m
2026-07-25 RYR7HV BCN → DUB Jul 25, 03:05 UTCJul 25, 06:30 UTC3h 25m
2026-07-24 RYR8RF SOF → STN Jul 24, 18:55 UTCJul 24, 20:55 UTC2h 0m
2026-07-24 RYR5TK SOF → EIN Jul 24, 15:30 UTCJul 24, 17:55 UTC2h 25m
2026-07-24 RYR1UN - Jul 24, 13:40 UTCJul 24, 14:35 UTC55m
2026-07-24 RYR290W SOF → BRI Jul 24, 11:40 UTCJul 24, 12:30 UTC50m
2026-07-24 RYR2VZ BGY → ATH Jul 24, 08:30 UTCJul 24, 10:45 UTC2h 15m
2026-07-24 RYR4383 SOF → BVA Jul 24, 04:35 UTCJul 24, 07:10 UTC2h 35m
2026-07-23 RYR96JG CRL → SOF Jul 23, 17:40 UTCJul 23, 19:50 UTC2h 10m
2026-07-23 RYR67HQ SOF → CRL Jul 23, 14:35 UTCJul 23, 16:55 UTC2h 20m
2026-07-23 RYR6PA PMI → BRS Jul 23, 12:20 UTCJul 23, 13:40 UTC1h 20m
2026-07-23 RYR46CZ SOF → CIA Jul 23, 10:00 UTCJul 23, 11:25 UTC1h 25m
2026-07-23 RYR6NP - Jul 23, 07:15 UTCJul 23, 08:15 UTC1h 0m
2026-07-23 RYR5643 BER → CHQ Jul 23, 05:30 UTCJul 23, 06:30 UTC1h 0m
2026-07-22 RYR86GG RAK → KRK Jul 22, 19:30 UTCJul 22, 22:05 UTC2h 35m
2026-07-22 RYR51SL LIS → VIE Jul 22, 15:40 UTCJul 22, 18:40 UTC3h 0m
2026-07-22 RYR196A MLA → SOF Jul 22, 13:15 UTCJul 22, 14:45 UTC1h 30m
2026-07-22 RYR6RG SOF → MLA Jul 22, 04:50 UTCJul 22, 12:25 UTC7h 35m
2026-07-21 RYR7449 MAD → SOF Jul 21, 19:40 UTCJul 21, 22:25 UTC2h 45m
2026-07-21 RYR57UJ BVA → FAO Jul 21, 14:55 UTCJul 21, 18:25 UTC3h 30m
2026-07-21 RYR6PA PMI → BRS Jul 21, 11:45 UTCJul 21, 13:10 UTC1h 25m
2026-07-21 RYR46CZ SOF → CIA Jul 21, 09:15 UTCJul 21, 10:45 UTC1h 30m
2026-07-21 RYR7DC TLS → BUD Jul 21, 06:20 UTCJul 21, 08:00 UTC1h 40m
2026-07-21 RYR10VZ SOF → TRN Jul 21, 03:25 UTCJul 21, 05:30 UTC2h 5m
2026-07-20 RYR96JG CRL → SOF Jul 20, 19:45 UTCJul 20, 21:55 UTC2h 10m
2026-07-20 RYR67HQ SOF → CRL Jul 20, 16:40 UTCJul 20, 19:05 UTC2h 25m
2026-07-20 RYR1UN - Jul 20, 14:50 UTCJul 20, 15:45 UTC55m
2026-07-20 RYR290W SOF → BRI Jul 20, 12:45 UTCJul 20, 13:45 UTC1h 0m
2026-07-20 RYR6PA PMI → BRS Jul 20, 10:40 UTCJul 20, 12:00 UTC1h 20m
2026-07-20 RYR46CZ - Jul 20, 07:30 UTCJul 20, 08:55 UTC1h 25m
2026-07-20 RYR7QU - Jul 20, 05:05 UTCJul 20, 06:25 UTC1h 20m
2026-07-20 RYR5DZ - Jul 20, 02:55 UTCJul 20, 04:10 UTC1h 15m
2026-07-19 RYR3VN BLQ → PMO Jul 19, 21:40 UTCJul 19, 23:45 UTC2h 5m
2026-07-19 RYR6EX PMO → CRL Jul 19, 18:30 UTCJul 19, 20:45 UTC2h 15m
2026-07-19 RYR1235 BRE → STN Jul 19, 16:50 UTCJul 19, 17:30 UTC40m
2026-07-19 RYR9DR ACE → LBA Jul 19, 14:35 UTCJul 19, 15:10 UTC35m
2026-07-19 RYR196A MLA → SOF Jul 19, 11:35 UTCJul 19, 13:05 UTC1h 30m
2026-07-19 RYR6RG SOF → MLA Jul 19, 08:30 UTCJul 19, 10:05 UTC1h 35m
2026-07-19 RYR9VC - Jul 19, 06:10 UTCJul 19, 07:30 UTC1h 20m
2026-07-19 RYR8UU SOF → TSF Jul 19, 04:00 UTCJul 19, 05:30 UTC1h 30m
2026-07-18 RYR61CH - Jul 18, 19:55 UTCJul 18, 22:35 UTC2h 40m

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

Mode-S 48C12D frequently asked

What is Mode-S code 48C12D?
48C12D is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RKN.
Where is Mode-S 48C12D registered?
Mode-S code 48C12D is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C12D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C12D, octal 22140455, decimal 4,768,045.
What flights does 48C12D operate?
Mode-S 48C12D has broadcast 20 distinct callsigns, including RYR1502, RYR1501, RYR159P, RYR13PB, RYR786D.