Apparatus

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sensors Mode-S transponder

4CA9D3

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EVK · BOEING 737-800

Hex
4CA9D3
Octal
23124723
Decimal
5,024,211
Country
IE
Tail
EI-EVK
Type
B738
Broadcasting now · callsign RYR6KV · 36,000 ft
Flights observed
343
Distinct callsigns
20
Country
IE
Last broadcast
21m ago

Current position

4CA9D3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA9D3 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
RYR312L Ryanair 4 2026-04-15
RYR615 Ryanair 3 2026-05-13
RYR52XB Ryanair 3 2026-04-30
RYR1EP - 3 2026-04-13
RYR19KU Ryanair 3 2026-05-13
RYR9RN Ryanair 2 2026-05-17
RYR9JX Ryanair 2 2026-05-19
RYR98AR Ryanair 2 2026-04-16
RYR97KC Ryanair 2 2026-05-20
RYR97GU - 2 2026-05-22
RYR94GZ Ryanair 2 2026-05-25
RYR93HA Ryanair 2 2026-04-25
RYR91CV Ryanair 2 2026-04-29
RYR9141 Ryanair 2 2026-05-09
RYR90UU Ryanair 2 2026-04-15
RYR8PY Ryanair 2 2026-04-15
RYR88FD - 2 2026-04-14
RYR7JZ Ryanair 2 2026-04-17
RYR76PX Ryanair 2 2026-04-30
RYR75TP Ryanair 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 RYR6KV NCL → ALC May 30, 05:30 UTCMay 30, 06:45 UTC1h 15m
2026-05-29 RYR9313 BFS → OPO May 29, 18:35 UTCMay 29, 20:45 UTC2h 10m
2026-05-29 RYR9314 OPO → BFS May 29, 13:30 UTCMay 29, 15:30 UTC2h 1m
2026-05-29 RYR92MY FMM → OPO May 29, 10:05 UTCMay 29, 12:20 UTC2h 15m
2026-05-29 RYR9EF CRL → MAD May 29, 06:55 UTCMay 29, 09:20 UTC2h 25m
2026-05-28 RYR37VB EIN → OPO May 28, 20:55 UTCMay 28, 23:00 UTC2h 5m
2026-05-28 RYR1223 - May 28, 19:30 UTCMay 28, 19:55 UTC25m
2026-05-28 RYR967L BER → BGY May 28, 15:30 UTCMay 28, 18:50 UTC3h 20m
2026-05-28 RYR4PQ CRL → CHQ May 28, 11:35 UTCMay 28, 14:30 UTC2h 55m
2026-05-28 RYR63CZ HEL → CRL May 28, 08:00 UTCMay 28, 10:20 UTC2h 20m
2026-05-28 RYR61AT CRL → HEL May 28, 04:45 UTCMay 28, 07:05 UTC2h 20m
2026-05-27 RYR8AU BZG → STN May 27, 19:00 UTCMay 27, 20:45 UTC1h 45m
2026-05-27 RYR36TZ CRL → MAD May 27, 15:35 UTCMay 27, 17:25 UTC1h 50m
2026-05-27 RYR375C AOI → CRL May 27, 13:05 UTCMay 27, 14:40 UTC1h 35m
2026-05-27 RYR87GN CRL → AOI May 27, 10:50 UTCMay 27, 12:15 UTC1h 25m
2026-05-27 RYR3689 QSR → CRL May 27, 07:50 UTCMay 27, 09:50 UTC2h 0m
2026-05-27 RYR3688 CRL → QSR May 27, 05:09 UTCMay 27, 06:55 UTC1h 45m
2026-05-26 RYR7H GOT → GDN May 26, 21:00 UTCMay 26, 22:09 UTC1h 10m
2026-05-26 RYR1GD STN → VRN May 26, 18:34 UTCMay 26, 20:05 UTC1h 30m
2026-05-26 RYR817L - May 26, 16:00 UTCMay 26, 17:30 UTC1h 30m
2026-05-26 RYR615U STN → BZR May 26, 13:29 UTCMay 26, 15:05 UTC1h 35m
2026-05-26 RYR27ST OTP → OTP May 26, 09:15 UTCMay 26, 11:30 UTC2h 15m
2026-05-26 RYR4ZF PMI → LTN May 26, 05:40 UTCMay 26, 08:04 UTC2h 25m
2026-05-25 RYR915B KRK → STN May 25, 20:19 UTCMay 25, 22:10 UTC1h 50m
2026-05-25 RYR53GQ DUB → FCO May 25, 17:20 UTCMay 25, 19:10 UTC1h 50m
2026-05-25 RYR57MU CPH → STN May 25, 14:40 UTCMay 25, 16:05 UTC1h 25m
2026-05-25 RYR99WT STN → CPH May 25, 12:30 UTCMay 25, 13:45 UTC1h 15m
2026-05-25 RYR94GZ FNC → STN May 25, 08:05 UTCMay 25, 10:40 UTC2h 35m
2026-05-25 RYR94GZ FNC → STN May 25, 07:15 UTCMay 25, 07:25 UTC10m
2026-05-24 RYR87YR CRL → FNC May 24, 18:55 UTCMay 24, 21:25 UTC2h 30m
2026-05-24 RYR29XE FNC → CRL May 24, 15:20 UTCMay 24, 17:55 UTC2h 35m
2026-05-24 RYR29XE FNC → CRL May 24, 14:30 UTCMay 24, 14:40 UTC10m
2026-05-24 RYR6676 SNN → FNC May 24, 12:45 UTCMay 24, 12:55 UTC10m
2026-05-24 RYR6676 SNN → FNC May 24, 09:55 UTCMay 24, 12:05 UTC2h 10m
2026-05-24 RYR6675 FNC → SNN May 24, 05:50 UTCMay 24, 08:55 UTC3h 5m
2026-05-23 RYR4QT AAR → STN May 23, 23:45 UTCMay 24, 00:05 UTC20m
2026-05-23 RYR4QT AAR → STN May 23, 20:20 UTCMay 23, 22:55 UTC2h 35m
2026-05-23 RYR6673 FNC → EDI May 23, 16:30 UTCMay 23, 19:25 UTC2h 55m
2026-05-23 RYR6673 FNC → EDI May 23, 15:40 UTCMay 23, 15:50 UTC10m
2026-05-23 RYR6672 - May 23, 14:10 UTCMay 23, 14:20 UTC10m
2026-05-23 RYR6672 - May 23, 10:50 UTCMay 23, 13:30 UTC2h 40m
2026-05-23 RYR6671 FNC → MXP May 23, 05:55 UTCMay 23, 08:40 UTC2h 45m
2026-05-23 RYR6671 FNC → MXP May 23, 05:10 UTCMay 23, 05:20 UTC10m
2026-05-23 RYR15ZZ DUB → FNC May 23, 02:45 UTCMay 23, 02:50 UTC5m
2026-05-22 RYR15ZZ DUB → FNC May 22, 23:35 UTCMay 23, 02:00 UTC2h 25m
2026-05-22 RYR97GU - May 22, 20:25 UTCMay 22, 22:35 UTC2h 10m
2026-05-22 RYR97GU - May 22, 19:35 UTCMay 22, 19:45 UTC10m
2026-05-22 RYR088 EMA → CFU May 22, 18:25 UTCMay 22, 18:35 UTC10m
2026-05-22 RYR088 EMA → CFU May 22, 17:00 UTCMay 22, 17:35 UTC35m
2026-05-22 RYR5KT MRS → LIS May 22, 13:25 UTCMay 22, 15:30 UTC2h 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-EVK page for operator, model, and routing details .

Mode-S 4CA9D3 frequently asked

What is Mode-S code 4CA9D3?
4CA9D3 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EVK.
Where is Mode-S 4CA9D3 registered?
Mode-S code 4CA9D3 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9D3 broadcasting right now?
Yes. Mode-S 4CA9D3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9D3, octal 23124723, decimal 5,024,211.
What flights does 4CA9D3 operate?
Mode-S 4CA9D3 has broadcast 20 distinct callsigns, including RYR312L, RYR615, RYR52XB, RYR1EP, RYR19KU.