sensors Mode-S transponder

4CAE8D

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IKK · BOEING 737 MAX 8

Hex
4CAE8D
Octal
23127215
Decimal
5,025,421
Country
IE
Tail
EI-IKK
Type
B38M
No current signal · last broadcast 23h ago
Flights observed
16
Distinct callsigns
8
Country
IE
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 4CAE8D.

Country allocation

The ICAO 24-bit address 4CAE8D 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 8 distinct

Callsign Airline Flights Last seen
RYR84GW - 3 2026-04-13
RYR4NR Ryanair 3 2026-04-13
RYR1316 - 3 2026-04-13
RYR85KH - 2 2026-04-13
RYR7389 - 2 2026-04-14
RYR7WW - 1 2026-04-12
RYR63TC - 1 2026-04-12
RYR12VQ - 1 2026-04-14

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR12VQ - Apr 14, 09:00 UTCApr 14, 09:05 UTC5m
2026-04-14 RYR7389 - Apr 14, 07:10 UTCApr 14, 07:55 UTC45m
2026-04-14 RYR7389 - Apr 14, 05:35 UTCApr 14, 07:10 UTC1h 35m
2026-04-13 RYR85KH - Apr 13, 19:50 UTCApr 13, 22:00 UTC2h 10m
2026-04-13 RYR85KH - Apr 13, 18:45 UTCApr 13, 20:10 UTC1h 25m
2026-04-13 RYR84GW - Apr 13, 16:15 UTCApr 13, 17:50 UTC1h 35m
2026-04-13 RYR84GW - Apr 13, 15:50 UTCApr 13, 17:50 UTC2h 0m
2026-04-13 RYR84GW - Apr 13, 14:30 UTCApr 13, 16:15 UTC1h 45m
2026-04-13 RYR1316 - Apr 13, 12:20 UTCApr 13, 13:15 UTC55m
2026-04-13 RYR1316 - Apr 13, 11:55 UTCApr 13, 13:15 UTC1h 20m
2026-04-13 RYR1316 - Apr 13, 10:25 UTCApr 13, 12:15 UTC1h 50m
2026-04-13 RYR4NR AGP → SCQ Apr 13, 08:20 UTCApr 13, 08:30 UTC10m
2026-04-13 RYR4NR AGP → SCQ Apr 13, 07:55 UTCApr 13, 08:30 UTC35m
2026-04-13 RYR4NR AGP → SCQ Apr 13, 06:00 UTCApr 13, 08:15 UTC2h 15m
2026-04-12 RYR63TC - Apr 12, 19:55 UTCApr 12, 20:15 UTC20m
2026-04-12 RYR7WW - Apr 12, 17:15 UTCApr 12, 19:05 UTC1h 50m

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

Mode-S 4CAE8D frequently asked

What is Mode-S code 4CAE8D?
4CAE8D is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IKK.
Where is Mode-S 4CAE8D registered?
Mode-S code 4CAE8D is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE8D broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE8D, octal 23127215, decimal 5,025,421.
What flights does 4CAE8D operate?
Mode-S 4CAE8D has broadcast 8 distinct callsigns, including RYR84GW, RYR4NR, RYR1316, RYR85KH, RYR7389.