sensors Mode-S transponder

4CAE6D

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IJZ · BOEING 737 MAX 8

Hex
4CAE6D
Octal
23127155
Decimal
5,025,389
Country
IE
Tail
EI-IJZ
Type
B38M
Broadcasting now · callsign RYR9MT · 30,425 ft
Flights observed
15
Distinct callsigns
10
Country
IE
Last broadcast
20h ago

Current position

4CAE6D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAE6D 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
RYR331Z Ryanair 3 2026-04-13
RYR4FQ - 2 2026-04-13
RYR215F - 2 2026-04-14
RYR1UE - 2 2026-04-13
RYR6NL - 1 2026-04-13
RYR6566 - 1 2026-04-14
RYR59CM - 1 2026-04-13
RYR3FB - 1 2026-04-12
RYR2943 - 1 2026-04-13
RYR1LP Ryanair 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR215F - Apr 14, 09:10 UTCApr 14, 11:00 UTC1h 50m
2026-04-14 RYR215F - Apr 14, 08:30 UTCApr 14, 09:05 UTC35m
2026-04-14 RYR6566 - Apr 14, 05:55 UTCApr 14, 06:35 UTC40m
2026-04-13 RYR2943 OPO → ALC Apr 13, 21:45 UTCApr 13, 22:55 UTC1h 10m
2026-04-13 RYR1UE - Apr 13, 19:50 UTCApr 13, 20:50 UTC1h 0m
2026-04-13 RYR1UE - Apr 13, 19:30 UTCApr 13, 20:10 UTC40m
2026-04-13 RYR4FQ - Apr 13, 17:10 UTCApr 13, 18:35 UTC1h 25m
2026-04-13 RYR4FQ - Apr 13, 16:45 UTCApr 13, 17:05 UTC20m
2026-04-13 RYR6NL - Apr 13, 13:20 UTCApr 13, 15:35 UTC2h 15m
2026-04-13 RYR59CM CWL → ALC Apr 13, 09:40 UTCApr 13, 11:35 UTC1h 55m
2026-04-13 RYR331Z ALC → CWL Apr 13, 08:20 UTCApr 13, 08:50 UTC30m
2026-04-13 RYR331Z ALC → CWL Apr 13, 07:55 UTCApr 13, 08:50 UTC55m
2026-04-13 RYR331Z ALC → CWL Apr 13, 06:35 UTCApr 13, 08:15 UTC1h 40m
2026-04-12 RYR3FB - Apr 12, 19:55 UTCApr 12, 20:10 UTC15m
2026-04-12 RYR1LP NCE → STN Apr 12, 17:15 UTCApr 12, 18:25 UTC1h 10m

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

Mode-S 4CAE6D frequently asked

What is Mode-S code 4CAE6D?
4CAE6D is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IJZ.
Where is Mode-S 4CAE6D registered?
Mode-S code 4CAE6D is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE6D broadcasting right now?
Yes. Mode-S 4CAE6D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE6D, octal 23127155, decimal 5,025,389.
What flights does 4CAE6D operate?
Mode-S 4CAE6D has broadcast 10 distinct callsigns, including RYR331Z, RYR4FQ, RYR215F, RYR1UE, RYR6NL.