sensors Mode-S transponder

48C223

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-RSD · BOEING 737-800

Hex
48C223
Octal
22141043
Decimal
4,768,291
Country
PL
Tail
SP-RSD
Type
B738
No current signal · last broadcast 16h ago
Flights observed
18
Distinct callsigns
12
Country
PL
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 48C223.

Country allocation

The ICAO 24-bit address 48C223 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 12 distinct

Callsign Airline Flights Last seen
RYR7XG - 3 2026-04-13
RYR2DL - 3 2026-04-13
RYR6782 - 2 2026-04-13
RYR5KN - 2 2026-04-13
RYR9XT - 1 2026-04-13
RYR9UQ - 1 2026-04-12
RYR6783 - 1 2026-04-13
RYR59JX - 1 2026-04-14
RYR4BM - 1 2026-04-12
RYR30DK Ryanair 1 2026-04-13
RYR2TJ - 1 2026-04-13
RYR2KP - 1 2026-04-14

Recent flights last 18

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR59JX - Apr 14, 07:05 UTCApr 14, 07:10 UTC5m
2026-04-14 RYR2KP - Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 RYR6783 - Apr 13, 21:30 UTCApr 13, 22:40 UTC1h 10m
2026-04-13 RYR6782 - Apr 13, 19:50 UTCApr 13, 20:40 UTC50m
2026-04-13 RYR6782 - Apr 13, 19:30 UTCApr 13, 20:10 UTC40m
2026-04-13 RYR2TJ - Apr 13, 17:20 UTCApr 13, 18:50 UTC1h 30m
2026-04-13 RYR7XG - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 RYR7XG - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 RYR7XG - Apr 13, 14:50 UTCApr 13, 16:15 UTC1h 25m
2026-04-13 RYR5KN - Apr 13, 12:20 UTCApr 13, 14:00 UTC1h 40m
2026-04-13 RYR5KN - Apr 13, 12:10 UTCApr 13, 14:00 UTC1h 50m
2026-04-13 RYR9XT KRK → TRF Apr 13, 09:40 UTCApr 13, 11:20 UTC1h 40m
2026-04-13 RYR2DL - Apr 13, 08:20 UTCApr 13, 08:35 UTC15m
2026-04-13 RYR2DL - Apr 13, 07:55 UTCApr 13, 08:35 UTC40m
2026-04-13 RYR2DL - Apr 13, 07:20 UTCApr 13, 08:15 UTC55m
2026-04-13 RYR30DK KRK → BGY Apr 13, 05:05 UTCApr 13, 06:35 UTC1h 30m
2026-04-12 RYR9UQ - Apr 12, 18:50 UTCApr 12, 20:15 UTC1h 25m
2026-04-12 RYR4BM - Apr 12, 17:15 UTCApr 12, 17:55 UTC40m

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

Mode-S 48C223 frequently asked

What is Mode-S code 48C223?
48C223 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-RSD.
Where is Mode-S 48C223 registered?
Mode-S code 48C223 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48C223 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48C223, octal 22141043, decimal 4,768,291.
What flights does 48C223 operate?
Mode-S 48C223 has broadcast 12 distinct callsigns, including RYR7XG, RYR2DL, RYR6782, RYR5KN, RYR9XT.