Apparatus

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sensors Mode-S transponder

4CAEA0

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IKZ · BOEING 737 MAX 8

Hex
4CAEA0
Octal
23127240
Decimal
5,025,440
Country
IE
Tail
EI-IKZ
Type
B38M
Broadcasting now · callsign RYR89XA · 37,000 ft
Flights observed
553
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:00 UTC

Current position

4CAEA0 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAEA0 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
RYR58FU Ryanair 13 2026-07-04
RYR9KE - 11 2026-07-03
RYR7HG - 11 2026-07-01
RYR46FR - 11 2026-07-01
RYR2WU - 11 2026-07-03
RYR5MW - 9 2026-07-03
RYR99XX Ryanair 7 2026-07-23
RYR94GZ - 7 2026-07-20
RYR877Z Ryanair 7 2026-07-23
RYR7WK Ryanair 7 2026-06-04
RYR4QT - 7 2026-07-22
RYR385 - 7 2026-07-23
RYR2QX - 7 2026-06-30
RYR12YU Ryanair 7 2026-06-04
RYR91EQ - 6 2026-07-20
RYR6676 Ryanair 6 2026-07-22
RYR6673 Ryanair 6 2026-05-06
RYR384 Ryanair 6 2026-07-23
RYR8949 - 5 2026-07-01
RYR87YR - 5 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR99TH LIS → DUB Jul 26, 21:55 UTCJul 26, 22:00 UTC5m
2026-07-26 RYR4XW BGY → BVA Jul 26, 18:25 UTCJul 26, 20:50 UTC2h 25m
2026-07-26 RYR6FH KIR → DUB Jul 26, 16:50 UTCJul 26, 17:30 UTC40m
2026-07-26 RYR69KF DUB → KIR Jul 26, 15:40 UTCJul 26, 16:10 UTC30m
2026-07-26 RYR985X DUB → ACE Jul 26, 05:05 UTCJul 26, 13:30 UTC8h 26m
2026-07-25 RYR7125 ACE → DUB Jul 25, 19:45 UTCJul 25, 23:20 UTC3h 35m
2026-07-25 RYR33JZ DUB → ACE Jul 25, 15:00 UTCJul 25, 18:10 UTC3h 10m
2026-07-25 RYR3NG STN → CGN Jul 25, 10:05 UTCJul 25, 13:35 UTC3h 30m
2026-07-25 RYR985X DUB → ACE Jul 25, 05:05 UTCJul 25, 08:20 UTC3h 15m
2026-07-24 RYR6L SVQ → CRL Jul 24, 21:45 UTCJul 25, 00:15 UTC2h 30m
2026-07-24 RYR9JV DUB → BTS Jul 24, 18:15 UTCJul 24, 20:35 UTC2h 20m
2026-07-24 RYR97GU FNC → DUB Jul 24, 13:55 UTCJul 24, 17:10 UTC3h 15m
2026-07-24 RYR43JZ BVA → FNC Jul 24, 12:35 UTCJul 24, 12:45 UTC10m
2026-07-24 RYR43JZ BVA → FNC Jul 24, 09:15 UTCJul 24, 12:00 UTC2h 45m
2026-07-24 RYR25UK FNC → BVA Jul 24, 05:15 UTCJul 24, 08:10 UTC2h 55m
2026-07-23 RYR385 LIS → FNC Jul 23, 21:00 UTCJul 23, 22:30 UTC1h 30m
2026-07-23 RYR384 FNC → LIS Jul 23, 18:05 UTCJul 23, 19:25 UTC1h 20m
2026-07-23 RYR99XX MAN → FNC Jul 23, 12:55 UTCJul 23, 13:10 UTC15m
2026-07-23 RYR99XX MAN → FNC Jul 23, 09:35 UTCJul 23, 12:20 UTC2h 45m
2026-07-23 RYR877Z FNC → MAN Jul 23, 06:00 UTCJul 23, 08:35 UTC2h 35m
2026-07-23 RYR877Z FNC → MAN Jul 23, 05:15 UTCJul 23, 05:20 UTC5m
2026-07-22 RYR6676 SNN → FNC Jul 22, 22:25 UTCJul 22, 22:35 UTC10m
2026-07-22 RYR6676 SNN → FNC Jul 22, 19:20 UTCJul 22, 21:35 UTC2h 15m
2026-07-22 RYR6675 FNC → SNN Jul 22, 16:10 UTCJul 22, 18:10 UTC2h 0m
2026-07-22 RYR6675 FNC → SNN Jul 22, 15:20 UTCJul 22, 15:35 UTC15m
2026-07-22 RYR4QT - Jul 22, 13:55 UTCJul 22, 14:05 UTC10m
2026-07-22 RYR4QT - Jul 22, 11:10 UTCJul 22, 13:05 UTC1h 55m
2026-07-22 RYR6672 - Jul 22, 00:05 UTCJul 22, 00:25 UTC20m
2026-07-21 RYR6672 - Jul 21, 20:45 UTCJul 21, 23:30 UTC2h 45m
2026-07-21 RYR6671 FNC → MXP Jul 21, 15:20 UTCJul 21, 18:30 UTC3h 10m
2026-07-21 RYR87YR - Jul 21, 13:00 UTCJul 21, 13:15 UTC15m
2026-07-21 RYR87YR - Jul 21, 09:40 UTCJul 21, 12:15 UTC2h 35m
2026-07-21 RYR29XE FNC → CRL Jul 21, 05:20 UTCJul 21, 08:40 UTC3h 20m
2026-07-20 RYR15ZZ DUB → FNC Jul 20, 20:30 UTCJul 20, 23:45 UTC3h 15m
2026-07-20 RYR97GU FNC → DUB Jul 20, 16:25 UTCJul 20, 19:35 UTC3h 10m
2026-07-20 RYR91EQ - Jul 20, 11:50 UTCJul 20, 15:25 UTC3h 35m
2026-07-20 RYR94GZ FNC → STN Jul 20, 07:10 UTCJul 20, 10:30 UTC3h 20m
2026-07-19 RYR99XX MAN → FNC Jul 19, 20:30 UTCJul 20, 00:00 UTC3h 30m
2026-07-19 RYR877Z FNC → MAN Jul 19, 15:30 UTCJul 19, 18:55 UTC3h 25m
2026-07-19 RYR6676 SNN → FNC Jul 19, 13:00 UTCJul 19, 13:10 UTC10m
2026-07-19 RYR6676 SNN → FNC Jul 19, 10:00 UTCJul 19, 12:20 UTC2h 20m
2026-07-19 RYR5MX ARN → SKG Jul 19, 06:45 UTCJul 19, 09:00 UTC2h 15m
2026-07-19 RYR9AJ NOC → FAO Jul 19, 05:15 UTCJul 19, 05:40 UTC25m
2026-07-19 RYR6616 ALC → IBZ Jul 19, 03:50 UTCJul 19, 04:10 UTC20m
2026-07-18 RYR9UJ - Jul 18, 21:05 UTCJul 18, 22:10 UTC1h 5m
2026-07-18 RYR27DE - Jul 18, 19:30 UTCJul 18, 20:25 UTC55m
2026-07-18 RYR4UC - Jul 18, 15:45 UTCJul 18, 18:10 UTC2h 25m
2026-07-18 RYR83AR - Jul 18, 12:25 UTCJul 18, 14:55 UTC2h 30m
2026-07-18 RYR78ZJ - Jul 18, 08:50 UTCJul 18, 11:00 UTC2h 10m
2026-07-18 RYR47XV ALC → BHX Jul 18, 05:45 UTCJul 18, 08:00 UTC2h 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 EI-IKZ page for operator, model, and routing details .

Mode-S 4CAEA0 frequently asked

What is Mode-S code 4CAEA0?
4CAEA0 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IKZ.
Where is Mode-S 4CAEA0 registered?
Mode-S code 4CAEA0 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEA0 broadcasting right now?
Yes. Mode-S 4CAEA0 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEA0, octal 23127240, decimal 5,025,440.
What flights does 4CAEA0 operate?
Mode-S 4CAEA0 has broadcast 20 distinct callsigns, including RYR58FU, RYR9KE, RYR7HG, RYR46FR, RYR2WU.