sensors Mode-S transponder

48C2B2

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RZT · BOEING 737 MAX 8

Hex
48C2B2
Octal
22141262
Decimal
4,768,434
Country
PL
Tail
SP-RZT
Type
B38M
Broadcasting now · callsign RYR8NQ · 36,000 ft
Flights observed
16
Distinct callsigns
11
Country
PL
Last broadcast
20h ago

Current position

48C2B2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 48C2B2 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 11 distinct

Callsign Airline Flights Last seen
RYR4AF - 3 2026-04-13
RYR9QK - 2 2026-04-13
RYR99LW - 2 2026-04-13
RYR79ZL - 2 2026-04-14
RYR89TK - 1 2026-04-14
RYR80NW - 1 2026-04-13
RYR7ZA Ryanair 1 2026-04-12
RYR6231 - 1 2026-04-13
RYR5JL - 1 2026-04-14
RYR44SB - 1 2026-04-13
RYR392T - 1 2026-04-12

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR89TK - Apr 14, 10:10 UTCApr 14, 11:05 UTC55m
2026-04-14 RYR79ZL - Apr 14, 09:10 UTCApr 14, 09:20 UTC10m
2026-04-14 RYR79ZL - Apr 14, 07:50 UTCApr 14, 09:05 UTC1h 15m
2026-04-14 RYR5JL KRK → CRL Apr 14, 05:25 UTCApr 14, 07:00 UTC1h 35m
2026-04-13 RYR9QK - Apr 13, 19:50 UTCApr 13, 22:00 UTC2h 10m
2026-04-13 RYR9QK - Apr 13, 19:15 UTCApr 13, 20:10 UTC55m
2026-04-13 RYR4AF - Apr 13, 16:15 UTCApr 13, 17:50 UTC1h 35m
2026-04-13 RYR4AF - Apr 13, 15:50 UTCApr 13, 17:50 UTC2h 0m
2026-04-13 RYR4AF - Apr 13, 14:45 UTCApr 13, 16:15 UTC1h 30m
2026-04-13 RYR6231 - Apr 13, 12:50 UTCApr 13, 13:40 UTC50m
2026-04-13 RYR99LW - Apr 13, 11:00 UTCApr 13, 11:55 UTC55m
2026-04-13 RYR99LW KRK → KRK Apr 13, 10:20 UTCApr 13, 10:45 UTC25m
2026-04-13 RYR80NW - Apr 13, 08:20 UTCApr 13, 10:15 UTC1h 55m
2026-04-13 RYR44SB KRK → LTN Apr 13, 05:05 UTCApr 13, 07:25 UTC2h 20m
2026-04-12 RYR7ZA PSA → MLA Apr 12, 19:20 UTCApr 12, 20:15 UTC55m
2026-04-12 RYR392T - Apr 12, 17:15 UTCApr 12, 18:30 UTC1h 15m

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

Mode-S 48C2B2 frequently asked

What is Mode-S code 48C2B2?
48C2B2 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RZT.
Where is Mode-S 48C2B2 registered?
Mode-S code 48C2B2 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C2B2 broadcasting right now?
Yes. Mode-S 48C2B2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C2B2, octal 22141262, decimal 4,768,434.
What flights does 48C2B2 operate?
Mode-S 48C2B2 has broadcast 11 distinct callsigns, including RYR4AF, RYR9QK, RYR99LW, RYR79ZL, RYR89TK.