Apparatus

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sensors Mode-S transponder

48C2A3

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RZD · BOEING 737 MAX 8

Hex
48C2A3
Octal
22141243
Decimal
4,768,419
Country
PL
Tail
SP-RZD
Type
B38M
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
580
Distinct callsigns
20
Country
PL
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 48C2A3.

Country allocation

The ICAO 24-bit address 48C2A3 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
RYR86NA - 9 2026-06-23
RYR41KN - 7 2026-06-23
RYR2UH Ryanair 7 2026-07-24
RYR7UM Ryanair 6 2026-07-24
RYR65JG - 6 2026-07-26
RYR47GU Ryanair 6 2026-07-26
RYR21WA Ryanair 6 2026-07-26
RYR9WQ Ryanair 5 2026-07-26
RYR9GA Ryanair 5 2026-07-24
RYR8GK - 5 2026-06-21
RYR79TG - 5 2026-06-19
RYR76ZJ - 5 2026-07-21
RYR6VC Ryanair 5 2026-07-24
RYR55HD Ryanair 5 2026-07-24
RYR4DD - 5 2026-07-15
RYR42KK Ryanair 5 2026-06-05
RYR3LH - 5 2026-07-20
RYR3BU Ryanair 5 2026-07-21
RYR39FQ - 5 2026-07-04
RYR34KC - 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR47GU LIS → KRK Jul 26, 18:15 UTCJul 26, 21:40 UTC3h 25m
2026-07-26 RYR21WA MXP → CTA Jul 26, 13:20 UTCJul 26, 16:45 UTC3h 25m
2026-07-26 RYR9WQ BER → BCN Jul 26, 08:45 UTCJul 26, 10:45 UTC2h 0m
2026-07-26 RYR65JG - Jul 26, 04:10 UTCJul 26, 06:35 UTC2h 26m
2026-07-25 RYR116N ALC → KRK Jul 25, 21:35 UTCJul 26, 00:00 UTC2h 25m
2026-07-25 RYR6366 KRK → ALC Jul 25, 17:00 UTCJul 25, 20:15 UTC3h 15m
2026-07-25 RYR62PQ BGY → KRK Jul 25, 14:40 UTCJul 25, 16:05 UTC1h 25m
2026-07-25 RYR7GG KRK → STN Jul 25, 11:05 UTCJul 25, 12:30 UTC1h 25m
2026-07-25 RYR392T NCL → KRK Jul 25, 08:00 UTCJul 25, 10:05 UTC2h 5m
2026-07-25 RYR4RW BGY → PRG Jul 25, 04:35 UTCJul 25, 06:45 UTC2h 10m
2026-07-24 RYR55HD CHQ → MAN Jul 24, 18:55 UTCJul 24, 21:00 UTC2h 5m
2026-07-24 RYR6VC MAD → MAN Jul 24, 15:20 UTCJul 24, 18:05 UTC2h 45m
2026-07-24 RYR7UM ARN → VCE Jul 24, 13:20 UTCJul 24, 14:45 UTC1h 25m
2026-07-24 RYR2UH TRF → GDN Jul 24, 11:15 UTCJul 24, 12:15 UTC1h 0m
2026-07-24 RYR9GA DUB → SBZ Jul 24, 08:20 UTCJul 24, 10:10 UTC1h 50m
2026-07-24 RYR6ZK SJJ → FMM Jul 24, 05:05 UTCJul 24, 07:10 UTC2h 5m
2026-07-23 RYR55HD CHQ → MAN Jul 23, 18:05 UTCJul 23, 20:20 UTC2h 15m
2026-07-23 RYR6VC MAD → MAN Jul 23, 14:35 UTCJul 23, 17:00 UTC2h 25m
2026-07-23 RYR8063 - Jul 23, 12:20 UTCJul 23, 13:30 UTC1h 10m
2026-07-23 RYR19 - Jul 23, 10:05 UTCJul 23, 11:25 UTC1h 20m
2026-07-23 RYR9BR ARN → KRK Jul 23, 07:35 UTCJul 23, 09:10 UTC1h 35m
2026-07-23 RYR8PE RAK → TLS Jul 23, 05:05 UTCJul 23, 06:35 UTC1h 30m
2026-07-22 RYR8201 BRI → AGP Jul 22, 20:00 UTCJul 22, 22:05 UTC2h 5m
2026-07-22 RYR2TD ZAD → FMO Jul 22, 16:50 UTCJul 22, 19:10 UTC2h 20m
2026-07-22 RYR9YW KRK → CRL Jul 22, 14:25 UTCJul 22, 15:40 UTC1h 15m
2026-07-22 RYR98LT KRK → RMI Jul 22, 12:15 UTCJul 22, 13:35 UTC1h 20m
2026-07-22 RYR65JG - Jul 22, 04:50 UTCJul 22, 10:25 UTC5h 35m
2026-07-21 RYR3BU MRS → DUB Jul 21, 19:55 UTCJul 21, 22:05 UTC2h 10m
2026-07-21 RYR76ZJ - Jul 21, 17:00 UTCJul 21, 19:05 UTC2h 5m
2026-07-21 RYR8AZ - Jul 21, 13:50 UTCJul 21, 16:05 UTC2h 15m
2026-07-21 RYR9954 POZ → FCO Jul 21, 10:45 UTCJul 21, 13:00 UTC2h 15m
2026-07-21 RYR4DL LIS → BER Jul 21, 08:15 UTCJul 21, 09:45 UTC1h 30m
2026-07-21 RYR8EB CRL → AGP Jul 21, 05:40 UTCJul 21, 07:10 UTC1h 30m
2026-07-20 RYR8BW STN → DUB Jul 20, 21:35 UTCJul 20, 23:10 UTC1h 35m
2026-07-20 RYR8NB RAK → BRU Jul 20, 18:30 UTCJul 20, 19:55 UTC1h 25m
2026-07-20 RYR3LH - Jul 20, 13:00 UTCJul 20, 14:45 UTC1h 45m
2026-07-20 RYR34KC - Jul 20, 10:00 UTCJul 20, 11:50 UTC1h 50m
2026-07-20 RYR7KW TRN → NAP Jul 20, 07:25 UTCJul 20, 08:55 UTC1h 30m
2026-07-20 RYR69UA KRK → CIA Jul 20, 04:50 UTCJul 20, 06:30 UTC1h 40m
2026-07-19 RYR9UQ DUB → KRK Jul 19, 20:20 UTCJul 19, 22:40 UTC2h 20m
2026-07-19 RYR1TF PMI → HHN Jul 19, 15:20 UTCJul 19, 18:00 UTC2h 40m
2026-07-19 RYR6BU - Jul 19, 12:45 UTCJul 19, 14:20 UTC1h 35m
2026-07-19 RYR38XF - Jul 19, 09:45 UTCJul 19, 11:20 UTC1h 35m
2026-07-19 RYR5VK - Jul 19, 07:05 UTCJul 19, 08:45 UTC1h 40m
2026-07-19 RYR389U STN → ALC Jul 19, 04:30 UTCJul 19, 06:10 UTC1h 40m
2026-07-18 RYR4033 - Jul 18, 18:55 UTCJul 18, 19:45 UTC50m
2026-07-18 RYR2LP BUD → PRG Jul 18, 17:20 UTCJul 18, 18:05 UTC45m
2026-07-18 RYR2PB - Jul 18, 14:30 UTCJul 18, 16:30 UTC2h 0m
2026-07-18 RYR95VG - Jul 18, 10:50 UTCJul 18, 13:10 UTC2h 20m
2026-07-18 RYR42PQ CHQ → BUD Jul 18, 07:40 UTCJul 18, 09:40 UTC2h 0m

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

Mode-S 48C2A3 frequently asked

What is Mode-S code 48C2A3?
48C2A3 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RZD.
Where is Mode-S 48C2A3 registered?
Mode-S code 48C2A3 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C2A3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C2A3, octal 22141243, decimal 4,768,419.
What flights does 48C2A3 operate?
Mode-S 48C2A3 has broadcast 20 distinct callsigns, including RYR86NA, RYR41KN, RYR2UH, RYR7UM, RYR65JG.