sensors Mode-S transponder

4CAE9D

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IKW · BOEING 737 MAX 8

Hex
4CAE9D
Octal
23127235
Decimal
5,025,437
Country
IE
Tail
EI-IKW
Type
B38M
No current signal · last broadcast 16h ago
Flights observed
19
Distinct callsigns
11
Country
IE
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4CAE9D.

Country allocation

The ICAO 24-bit address 4CAE9D 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 11 distinct

Callsign Airline Flights Last seen
RYR395K - 3 2026-04-13
RYR33WQ - 3 2026-04-13
RYR115V Ryanair 3 2026-04-13
RYR59VR - 2 2026-04-14
RYR4TT - 2 2026-04-13
RYR86GY - 1 2026-04-14
RYR79RN - 1 2026-04-13
RYR5AT - 1 2026-04-13
RYR59CV - 1 2026-04-12
RYR5615 - 1 2026-04-12
RYR2LK Ryanair 1 2026-04-14

Recent flights last 19

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR86GY - Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-14 RYR59VR - Apr 14, 09:10 UTCApr 14, 09:55 UTC45m
2026-04-14 RYR59VR - Apr 14, 07:45 UTCApr 14, 09:05 UTC1h 20m
2026-04-14 RYR2LK STN → BGY Apr 14, 05:15 UTCApr 14, 06:45 UTC1h 30m
2026-04-13 RYR79RN - Apr 13, 21:55 UTCApr 13, 23:45 UTC1h 50m
2026-04-13 RYR4TT - Apr 13, 19:50 UTCApr 13, 21:05 UTC1h 15m
2026-04-13 RYR4TT - Apr 13, 18:50 UTCApr 13, 20:10 UTC1h 20m
2026-04-13 RYR5AT NOC → EDI Apr 13, 17:05 UTCApr 13, 17:55 UTC50m
2026-04-13 RYR395K - Apr 13, 16:15 UTCApr 13, 16:20 UTC5m
2026-04-13 RYR395K - Apr 13, 15:50 UTCApr 13, 16:20 UTC30m
2026-04-13 RYR395K - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 RYR33WQ - Apr 13, 12:20 UTCApr 13, 14:35 UTC2h 15m
2026-04-13 RYR33WQ - Apr 13, 11:55 UTCApr 13, 14:35 UTC2h 40m
2026-04-13 RYR33WQ - Apr 13, 11:30 UTCApr 13, 12:15 UTC45m
2026-04-13 RYR115V EDI → PMO Apr 13, 08:20 UTCApr 13, 10:00 UTC1h 40m
2026-04-13 RYR115V EDI → PMO Apr 13, 07:55 UTCApr 13, 10:00 UTC2h 5m
2026-04-13 RYR115V EDI → PMO Apr 13, 07:05 UTCApr 13, 08:15 UTC1h 10m
2026-04-12 RYR5615 - Apr 12, 23:55 UTCApr 13, 00:25 UTC30m
2026-04-12 RYR59CV - Apr 12, 17:15 UTCApr 12, 20:00 UTC2h 45m

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

Mode-S 4CAE9D frequently asked

What is Mode-S code 4CAE9D?
4CAE9D is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IKW.
Where is Mode-S 4CAE9D registered?
Mode-S code 4CAE9D is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE9D broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE9D, octal 23127235, decimal 5,025,437.
What flights does 4CAE9D operate?
Mode-S 4CAE9D has broadcast 11 distinct callsigns, including RYR395K, RYR33WQ, RYR115V, RYR59VR, RYR4TT.