Apparatus

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sensors Mode-S transponder

4CA815

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EKW · BOEING 737-800

Hex
4CA815
Octal
23124025
Decimal
5,023,765
Country
IE
Tail
EI-EKW
Type
B738
No current signal · last broadcast 4h ago
Flights observed
568
Distinct callsigns
20
Country
IE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4CA815.

Country allocation

The ICAO 24-bit address 4CA815 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
RYR9RA - 4 2026-07-12
RYR4EX Ryanair 4 2026-04-19
RYR39ED - 4 2026-07-12
RUK15SU Ryanair UK 4 2026-04-20
RYR9DJ Ryanair 3 2026-05-30
RYR907P - 3 2026-07-09
RYR89TL Ryanair 3 2026-06-04
RYR81EN Ryanair 3 2026-05-30
RYR771U Ryanair 3 2026-04-23
RYR74XH Ryanair 3 2026-06-08
RYR72JE Ryanair 3 2026-04-21
RYR719 Ryanair 3 2026-04-18
RYR6HL - 3 2026-07-11
RYR69QT Ryanair 3 2026-06-07
RYR68AB Ryanair 3 2026-06-04
RYR60PR - 3 2026-07-11
RYR5ZV Ryanair 3 2026-05-30
RYR5649 - 3 2026-07-09
RYR537R Ryanair 3 2026-04-18
RYR49WG Ryanair 3 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR31BA - Jul 14, 20:15 UTCJul 14, 23:45 UTC3h 29m
2026-07-14 RYR29EN - Jul 14, 16:25 UTCJul 14, 19:20 UTC2h 55m
2026-07-14 RYR65ZK - Jul 14, 11:10 UTCJul 14, 14:30 UTC3h 20m
2026-07-14 RYR7JF - Jul 14, 04:30 UTCJul 14, 07:25 UTC2h 55m
2026-07-13 RYR3AD - Jul 13, 21:00 UTCJul 13, 21:55 UTC55m
2026-07-13 RYR4XR - Jul 13, 18:20 UTCJul 13, 20:00 UTC1h 40m
2026-07-13 RYR97BL - Jul 13, 15:25 UTCJul 13, 17:00 UTC1h 35m
2026-07-13 RYR1848 - Jul 13, 12:15 UTCJul 13, 14:20 UTC2h 5m
2026-07-13 RYR1849 - Jul 13, 09:30 UTCJul 13, 11:25 UTC1h 55m
2026-07-13 RYR5035 VLC → VLC Jul 13, 04:25 UTCJul 13, 08:15 UTC3h 50m
2026-07-12 RYR52SU - Jul 12, 19:55 UTCJul 12, 21:40 UTC1h 45m
2026-07-12 RYR65FR VLC → TSF Jul 12, 17:25 UTCJul 12, 19:05 UTC1h 40m
2026-07-12 RYR33EL TRS → VLC Jul 12, 14:35 UTCJul 12, 16:40 UTC2h 5m
2026-07-12 RYR9319 DUB → TRS Jul 12, 10:55 UTCJul 12, 13:05 UTC2h 10m
2026-07-12 RYR2XA - Jul 12, 07:31 UTCJul 12, 10:01 UTC2h 30m
2026-07-12 RYR9RA - Jul 12, 05:55 UTCJul 12, 06:50 UTC55m
2026-07-12 RYR39ED - Jul 12, 04:05 UTCJul 12, 04:50 UTC45m
2026-07-11 RYR99ZG - Jul 11, 20:05 UTCJul 11, 21:45 UTC1h 40m
2026-07-11 RYR27JN TRS → STN Jul 11, 17:25 UTCJul 11, 19:10 UTC1h 45m
2026-07-11 RYR60PR - Jul 11, 15:35 UTCJul 11, 16:35 UTC1h 0m
2026-07-11 RYR6HL TRS → BRI Jul 11, 13:45 UTCJul 11, 14:45 UTC1h 0m
2026-07-11 RYR78ZG - Jul 11, 11:05 UTCJul 11, 12:15 UTC1h 10m
2026-07-11 RYR4WD - Jul 11, 08:45 UTCJul 11, 09:40 UTC55m
2026-07-11 RYR6788 - Jul 11, 06:20 UTCJul 11, 07:40 UTC1h 20m
2026-07-11 RYR6789 - Jul 11, 04:10 UTCJul 11, 05:40 UTC1h 30m
2026-07-10 RYR99ZG - Jul 10, 19:35 UTCJul 10, 21:15 UTC1h 40m
2026-07-10 RYR27JN TRS → STN Jul 10, 16:45 UTCJul 10, 18:35 UTC1h 50m
2026-07-10 RYR60PR - Jul 10, 14:00 UTCJul 10, 15:00 UTC1h 0m
2026-07-10 RYR6HL - Jul 10, 12:05 UTCJul 10, 13:00 UTC55m
2026-07-10 RYR9RA - Jul 10, 10:20 UTCJul 10, 11:10 UTC50m
2026-07-10 RYR39ED - Jul 10, 08:00 UTCJul 10, 09:10 UTC1h 10m
2026-07-10 RYR3342 PRG → TRS Jul 10, 05:50 UTCJul 10, 06:45 UTC55m
2026-07-10 RYR3343 TRS → PRG Jul 10, 04:10 UTCJul 10, 05:00 UTC50m
2026-07-09 RYR60PR - Jul 9, 20:05 UTCJul 9, 21:05 UTC1h 0m
2026-07-09 RYR6HL - Jul 9, 18:20 UTCJul 9, 19:20 UTC1h 0m
2026-07-09 RYR34DC - Jul 9, 16:20 UTCJul 9, 17:35 UTC1h 15m
2026-07-09 RYR978N TRS → CRL Jul 9, 14:05 UTCJul 9, 15:35 UTC1h 30m
2026-07-09 RYR78HC BCN → TRS Jul 9, 11:50 UTCJul 9, 13:20 UTC1h 30m
2026-07-09 RYR94VL TRS → BCN Jul 9, 08:50 UTCJul 9, 10:25 UTC1h 35m
2026-07-09 RYR907P - Jul 9, 06:40 UTCJul 9, 07:50 UTC1h 10m
2026-07-09 RYR5649 - Jul 9, 04:45 UTCJul 9, 05:25 UTC40m
2026-07-08 RYR9RA - Jul 8, 19:40 UTCJul 8, 20:35 UTC55m
2026-07-08 RYR39ED - Jul 8, 17:45 UTCJul 8, 18:30 UTC45m
2026-07-08 RYR907P - Jul 8, 16:05 UTCJul 8, 17:05 UTC1h 0m
2026-07-08 RYR5649 - Jul 8, 13:50 UTCJul 8, 14:35 UTC45m
2026-07-08 RYR2426 SVQ → TRS Jul 8, 07:45 UTCJul 8, 10:15 UTC2h 30m
2026-07-08 RYR2427 TRS → SVQ Jul 8, 04:20 UTCJul 8, 06:50 UTC2h 30m
2026-07-07 RYR48ZK VLC → TRS Jul 7, 21:10 UTCJul 7, 22:55 UTC1h 45m
2026-07-07 RYR33EL - Jul 7, 18:35 UTCJul 7, 20:20 UTC1h 45m
2026-07-07 RYR83SL OLB → TRS Jul 7, 17:00 UTCJul 7, 17:55 UTC55m

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

Mode-S 4CA815 frequently asked

What is Mode-S code 4CA815?
4CA815 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EKW.
Where is Mode-S 4CA815 registered?
Mode-S code 4CA815 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA815 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA815, octal 23124025, decimal 5,023,765.
What flights does 4CA815 operate?
Mode-S 4CA815 has broadcast 20 distinct callsigns, including RYR9RA, RYR4EX, RYR39ED, RUK15SU, RYR9DJ.