sensors Mode-S transponder

4CAEE5

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-ILE · BOEING 737 MAX 8

Hex
4CAEE5
Octal
23127345
Decimal
5,025,509
Country
IE
Tail
EI-ILE
Type
B38M
Transponder active on ground
Flights observed
14
Distinct callsigns
10
Country
IE
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 4CAEE5.

Country allocation

The ICAO 24-bit address 4CAEE5 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 10 distinct

Callsign Airline Flights Last seen
RYR99XX - 2 2026-04-13
RYR94GZ Ryanair 2 2026-04-14
RYR6049 - 2 2026-04-13
RYR12LF - 2 2026-04-13
RYR91EQ - 1 2026-04-14
RYR877Z - 1 2026-04-12
RYR3WD Ryanair 1 2026-04-13
RYR385 - 1 2026-04-13
RYR384 - 1 2026-04-13
RYR088 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR91EQ - Apr 14, 09:35 UTCApr 14, 11:05 UTC1h 30m
2026-04-14 RYR94GZ FNC → STN Apr 14, 07:10 UTCApr 14, 08:35 UTC1h 25m
2026-04-14 RYR94GZ FNC → STN Apr 14, 06:05 UTCApr 14, 07:10 UTC1h 5m
2026-04-13 RYR6049 - Apr 13, 23:25 UTCApr 13, 23:35 UTC10m
2026-04-13 RYR6049 - Apr 13, 22:00 UTCApr 13, 22:40 UTC40m
2026-04-13 RYR12LF - Apr 13, 20:05 UTCApr 13, 21:05 UTC1h 0m
2026-04-13 RYR12LF - Apr 13, 19:10 UTCApr 13, 19:20 UTC10m
2026-04-13 RYR385 - Apr 13, 16:35 UTCApr 13, 18:00 UTC1h 25m
2026-04-13 RYR384 - Apr 13, 14:05 UTCApr 13, 15:35 UTC1h 30m
2026-04-13 RYR088 - Apr 13, 09:00 UTCApr 13, 10:20 UTC1h 20m
2026-04-13 RYR3WD EDI → GDN Apr 13, 06:35 UTCApr 13, 08:00 UTC1h 25m
2026-04-13 RYR99XX - Apr 13, 00:20 UTCApr 13, 01:20 UTC1h 0m
2026-04-12 RYR99XX - Apr 12, 23:55 UTCApr 13, 01:20 UTC1h 25m
2026-04-12 RYR877Z - Apr 12, 17:15 UTCApr 12, 20:15 UTC3h 0m

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

Mode-S 4CAEE5 frequently asked

What is Mode-S code 4CAEE5?
4CAEE5 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-ILE.
Where is Mode-S 4CAEE5 registered?
Mode-S code 4CAEE5 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEE5 broadcasting right now?
Mode-S 4CAEE5 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEE5, octal 23127345, decimal 5,025,509.
What flights does 4CAEE5 operate?
Mode-S 4CAEE5 has broadcast 10 distinct callsigns, including RYR99XX, RYR94GZ, RYR6049, RYR12LF, RYR91EQ.