sensors Mode-S transponder

4CA8AF

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EGD · BOEING 737-800

Hex
4CA8AF
Octal
23124257
Decimal
5,023,919
Country
IE
Tail
EI-EGD
Type
B738
Broadcasting now · callsign RYR21YF · 37,000 ft
Flights observed
312
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Current position

4CA8AF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA8AF falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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
RYR760L Ryanair 5 2026-05-25
RYR25SX Ryanair 5 2026-05-25
RYR9BV Ryanair 4 2026-04-16
RYR8QZ Ryanair 4 2026-04-22
RYR53AX Ryanair 4 2026-05-28
RYR47YB Ryanair 4 2026-04-25
RYR423R Ryanair 4 2026-05-25
RYR38HP - 4 2026-04-15
RYR36HD Ryanair 4 2026-04-17
RYR2FM Ryanair 4 2026-05-28
RYR27UC Ryanair 4 2026-05-25
RYR17UZ Ryanair 4 2026-04-17
RYR992U Ryanair 3 2026-05-24
RYR885R Ryanair 3 2026-05-25
RYR7SG Ryanair 3 2026-05-12
RYR7FL - 3 2026-04-15
RYR73GR Ryanair 3 2026-04-16
RYR709E Ryanair 3 2026-04-17
RYR69XT Ryanair 3 2026-05-25
RYR5HT Ryanair 3 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 RYR94ZY - May 30, 17:00 UTCMay 30, 19:20 UTC2h 20m
2026-05-30 RYR7RW MRS → OPO May 30, 15:20 UTCMay 30, 16:10 UTC50m
2026-05-30 RYR9YQ BCN → MAN May 30, 13:30 UTCMay 30, 14:20 UTC50m
2026-05-30 RYR47NY BOH → FAO May 30, 10:00 UTCMay 30, 12:10 UTC2h 10m
2026-05-30 RYR80XD FAO → BOH May 30, 06:45 UTCMay 30, 08:55 UTC2h 10m
2026-05-29 RYR9459 RAK → FAO May 29, 21:50 UTCMay 29, 22:40 UTC50m
2026-05-29 RYR9458 FAO → RAK May 29, 19:55 UTCMay 29, 20:30 UTC35m
2026-05-29 RYR95KE BVA → FAO May 29, 17:00 UTCMay 29, 19:15 UTC2h 15m
2026-05-29 RYR57HT FAO → BVA May 29, 13:25 UTCMay 29, 15:35 UTC2h 10m
2026-05-29 RYR893Y NQY → FAO May 29, 09:20 UTCMay 29, 11:30 UTC2h 10m
2026-05-29 RYR96FD FAO → NQY May 29, 06:20 UTCMay 29, 08:25 UTC2h 5m
2026-05-28 RYR52NP WMI → FAO May 28, 18:25 UTCMay 28, 22:05 UTC3h 40m
2026-05-28 RYR6WJ VNO → TRN May 28, 13:35 UTCMay 28, 17:25 UTC3h 50m
2026-05-28 RYR53AX SNN → FAO May 28, 09:55 UTCMay 28, 12:15 UTC2h 20m
2026-05-28 RYR2FM LGW → ORK May 28, 06:35 UTCMay 28, 08:55 UTC2h 20m
2026-05-27 RYR3VD EDI → BER May 27, 18:40 UTCMay 27, 21:15 UTC2h 35m
2026-05-27 RYR63PR CRL → BLQ May 27, 15:10 UTCMay 27, 17:45 UTC2h 35m
2026-05-27 RYR69UN LPL → FAO May 27, 11:30 UTCMay 27, 14:15 UTC2h 45m
2026-05-27 RYR94BQ FAO → LPL May 27, 08:10 UTCMay 27, 10:40 UTC2h 30m
2026-05-26 RYR73SV LUX → FAO May 26, 17:55 UTCMay 26, 20:24 UTC2h 30m
2026-05-26 RYR72YC FAO → LUX May 26, 14:30 UTCMay 26, 16:59 UTC2h 30m
2026-05-26 RYR80UH SNN → FAO May 26, 10:29 UTCMay 26, 12:54 UTC2h 25m
2026-05-25 RYR27UC STN → SNN May 25, 18:55 UTCMay 25, 19:54 UTC1h 0m
2026-05-25 RYR423R SNN → STN May 25, 16:10 UTCMay 25, 17:25 UTC1h 15m
2026-05-25 RYR25SX LGW → SNN May 25, 14:10 UTCMay 25, 15:05 UTC55m
2026-05-25 RYR760L SNN → LGW May 25, 11:45 UTCMay 25, 12:50 UTC1h 5m
2026-05-25 RYR69XT REU → SNN May 25, 08:25 UTCMay 25, 10:25 UTC2h 0m
2026-05-25 RYR885R SNN → REU May 25, 05:25 UTCMay 25, 07:30 UTC2h 5m
2026-05-24 RYR992U STN → SNN May 24, 20:05 UTCMay 24, 21:05 UTC1h 0m
2026-05-24 RYR2DZ GLA → RIX May 24, 18:05 UTCMay 24, 19:10 UTC1h 5m
2026-05-24 RYR5006 BZR → SNN May 24, 15:30 UTCMay 24, 17:15 UTC1h 45m
2026-05-24 RYR5007 BLQ → MAN May 24, 12:40 UTCMay 24, 14:30 UTC1h 50m
2026-05-24 RYR88RL BUD → SNN May 24, 08:50 UTCMay 24, 11:30 UTC2h 40m
2026-05-24 RYR20PT SNN → BUD May 24, 05:20 UTCMay 24, 08:05 UTC2h 45m
2026-05-23 RYR2FM LGW → ORK May 23, 20:35 UTCMay 23, 22:55 UTC2h 20m
2026-05-23 RYR53AX SNN → FAO May 23, 17:10 UTCMay 23, 19:25 UTC2h 16m
2026-05-23 RYR25SX LGW → SNN May 23, 15:15 UTCMay 23, 16:10 UTC55m
2026-05-23 RYR760L SNN → LGW May 23, 12:45 UTCMay 23, 13:50 UTC1h 5m
2026-05-23 RYR9636 SOF → AMM May 23, 08:40 UTCMay 23, 11:25 UTC2h 45m
2026-05-23 RYR60RF KRK → STN May 23, 05:15 UTCMay 23, 07:55 UTC2h 40m
2026-05-22 RYR992U STN → SNN May 22, 18:40 UTCMay 22, 19:45 UTC1h 5m
2026-05-22 RYR2DZ GLA → RIX May 22, 16:25 UTCMay 22, 17:40 UTC1h 15m
2026-05-22 RYR27UC STN → SNN May 22, 14:35 UTCMay 22, 15:35 UTC1h 0m
2026-05-22 RYR423R SNN → STN May 22, 12:20 UTCMay 22, 13:35 UTC1h 15m
2026-05-22 RYR8YF EMA → WRO May 22, 09:10 UTCMay 22, 11:05 UTC1h 55m
2026-05-22 RYR18HJ SNN → GRO May 22, 06:15 UTCMay 22, 08:15 UTC2h 0m
2026-05-21 RYR69XT REU → SNN May 21, 17:45 UTCMay 21, 19:45 UTC2h 0m
2026-05-21 RYR885R SNN → REU May 21, 14:35 UTCMay 21, 16:45 UTC2h 10m
2026-05-21 RYR25SX LGW → SNN May 21, 11:20 UTCMay 21, 12:20 UTC1h 0m
2026-05-21 RYR760L SNN → LGW May 21, 09:05 UTCMay 21, 10:10 UTC1h 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 EI-EGD page for operator, model, and routing details .

Mode-S 4CA8AF frequently asked

What is Mode-S code 4CA8AF?
4CA8AF is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EGD.
Where is Mode-S 4CA8AF registered?
Mode-S code 4CA8AF is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA8AF broadcasting right now?
Yes. Mode-S 4CA8AF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA8AF, octal 23124257, decimal 5,023,919.
What flights does 4CA8AF operate?
Mode-S 4CA8AF has broadcast 20 distinct callsigns, including RYR760L, RYR25SX, RYR9BV, RYR8QZ, RYR53AX.