Apparatus

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sensors Mode-S transponder

4CAE9E

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IKX · BOEING 737 MAX 8

Hex
4CAE9E
Octal
23127236
Decimal
5,025,438
Country
IE
Tail
EI-IKX
Type
B38M
Broadcasting now · callsign RYR76RK · 37,000 ft
Flights observed
528
Distinct callsigns
20
Country
IE
Last broadcast
47m ago

Current position

4CAE9E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAE9E 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
RYR985X - 9 2026-07-07
RYR89XA - 8 2026-07-10
RYR5TP - 8 2026-07-10
RYR3NG - 6 2026-07-07
RYR9BJ Ryanair 5 2026-05-01
RYR6ZE Ryanair 5 2026-05-01
RYR9NN - 4 2026-07-11
RYR87SQ Ryanair 4 2026-05-04
RYR7JU Ryanair 4 2026-05-04
RYR6MK - 4 2026-07-11
RYR6JC Ryanair 4 2026-05-17
RYR58UE Ryanair 4 2026-05-04
RYR42WC Ryanair 4 2026-05-17
RYR41RE - 4 2026-07-07
RYR40AU - 4 2026-07-11
RYR34PP Ryanair 4 2026-04-29
RYR220U Ryanair 4 2026-05-04
RYR1UD Ryanair 4 2026-07-07
RYR10BF - 4 2026-07-11
RYR9XF Ryanair 3 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR76RK - Jul 14, 08:30 UTCJul 14, 09:30 UTC1h 0m
2026-07-14 RYR1FT - Jul 14, 06:35 UTCJul 14, 07:20 UTC45m
2026-07-14 RYR146G DUB → MAN Jul 14, 05:15 UTCJul 14, 05:45 UTC30m
2026-07-13 RYR75HH VNO → DUB Jul 13, 20:30 UTCJul 13, 23:10 UTC2h 40m
2026-07-13 RYR7139 DUB → VNO Jul 13, 16:55 UTCJul 13, 19:35 UTC2h 40m
2026-07-13 RYR50NB - Jul 13, 14:35 UTCJul 13, 15:50 UTC1h 15m
2026-07-13 RYR66DT - Jul 13, 12:05 UTCJul 13, 13:15 UTC1h 10m
2026-07-13 RYR89YH - Jul 13, 08:30 UTCJul 13, 11:00 UTC2h 30m
2026-07-13 RYR1ZR DUB → WMI Jul 13, 04:55 UTCJul 13, 07:10 UTC2h 15m
2026-07-12 RYR8YD MLA → DUB Jul 12, 19:30 UTCJul 12, 23:05 UTC3h 35m
2026-07-12 RYR6GL DUB → MLA Jul 12, 15:30 UTCJul 12, 18:35 UTC3h 5m
2026-07-12 RYR53UX - Jul 12, 11:15 UTCJul 12, 14:10 UTC2h 55m
2026-07-12 RYR7XY - Jul 12, 06:50 UTCJul 12, 09:20 UTC2h 30m
2026-07-11 RYR214Y - Jul 11, 21:10 UTCJul 11, 23:50 UTC2h 40m
2026-07-11 RYR60WC DUB → RIX Jul 11, 17:30 UTCJul 11, 20:05 UTC2h 35m
2026-07-11 RYR6MK - Jul 11, 13:55 UTCJul 11, 16:15 UTC2h 20m
2026-07-11 RYR9NN DUB → FAO Jul 11, 10:15 UTCJul 11, 12:50 UTC2h 35m
2026-07-11 RYR10BF - Jul 11, 08:30 UTCJul 11, 09:20 UTC50m
2026-07-11 RYR40AU DUB → LGW Jul 11, 06:20 UTCJul 11, 07:25 UTC1h 5m
2026-07-10 RYR93SC LGW → DUB Jul 10, 21:30 UTCJul 10, 22:20 UTC50m
2026-07-10 RYR70SV DUB → LGW Jul 10, 19:40 UTCJul 10, 20:30 UTC50m
2026-07-10 RYR45KP LGW → DUB Jul 10, 17:45 UTCJul 10, 18:45 UTC1h 0m
2026-07-10 RYR61SV DUB → LGW Jul 10, 15:10 UTCJul 10, 16:35 UTC1h 25m
2026-07-10 RYR5TP - Jul 10, 10:15 UTCJul 10, 13:45 UTC3h 30m
2026-07-10 RYR89XA - Jul 10, 05:05 UTCJul 10, 08:45 UTC3h 40m
2026-07-09 RYR4XH - Jul 9, 21:45 UTCJul 9, 23:50 UTC2h 5m
2026-07-09 RYR1TW - Jul 9, 18:55 UTCJul 9, 20:50 UTC1h 55m
2026-07-09 RYR3765 BHX → DUB Jul 9, 17:20 UTCJul 9, 18:05 UTC45m
2026-07-09 RYR4NZ DUB → BHX Jul 9, 15:40 UTCJul 9, 16:20 UTC40m
2026-07-09 RYR5TP - Jul 9, 11:00 UTCJul 9, 14:30 UTC3h 30m
2026-07-09 RYR89XA - Jul 9, 05:30 UTCJul 9, 09:10 UTC3h 40m
2026-07-08 RYR6YQ - Jul 8, 21:00 UTCJul 8, 23:55 UTC2h 55m
2026-07-08 RYR17UJ - Jul 8, 17:50 UTCJul 8, 19:20 UTC1h 30m
2026-07-08 RYR17UJ - Jul 8, 16:20 UTCJul 8, 17:45 UTC1h 25m
2026-07-08 RYR6CN - Jul 8, 11:20 UTCJul 8, 14:55 UTC3h 35m
2026-07-08 RYR74WC - Jul 8, 06:10 UTCJul 8, 10:10 UTC4h 0m
2026-07-07 RYR41RE - Jul 7, 20:15 UTCJul 7, 23:45 UTC3h 30m
2026-07-07 RYR1UD DUB → TFS Jul 7, 15:05 UTCJul 7, 18:50 UTC3h 45m
2026-07-07 RYR3NG - Jul 7, 10:00 UTCJul 7, 13:40 UTC3h 40m
2026-07-07 RYR985X - Jul 7, 08:30 UTCJul 7, 08:50 UTC20m
2026-07-07 RYR985X - Jul 7, 05:10 UTCJul 7, 07:50 UTC2h 40m
2026-07-06 RYR3MA - Jul 6, 19:30 UTCJul 6, 22:00 UTC2h 30m
2026-07-06 RYR15EP - Jul 6, 16:05 UTCJul 6, 18:30 UTC2h 25m
2026-07-06 RYR5TP - Jul 6, 11:00 UTCJul 6, 14:45 UTC3h 45m
2026-07-06 RYR89XA - Jul 6, 06:00 UTCJul 6, 09:50 UTC3h 50m
2026-07-05 RYR41RE - Jul 5, 20:10 UTCJul 5, 23:40 UTC3h 30m
2026-07-05 RYR1UD DUB → TFS Jul 5, 14:55 UTCJul 5, 18:35 UTC3h 40m
2026-07-05 RYR53UX - Jul 5, 10:50 UTCJul 5, 13:40 UTC2h 50m
2026-07-05 RYR7XY - Jul 5, 06:50 UTCJul 5, 09:15 UTC2h 25m
2026-07-04 RYR50WM IBZ → DUB Jul 4, 20:35 UTCJul 4, 23:00 UTC2h 25m

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

Mode-S 4CAE9E frequently asked

What is Mode-S code 4CAE9E?
4CAE9E is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IKX.
Where is Mode-S 4CAE9E registered?
Mode-S code 4CAE9E is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE9E broadcasting right now?
Yes. Mode-S 4CAE9E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE9E, octal 23127236, decimal 5,025,438.
What flights does 4CAE9E operate?
Mode-S 4CAE9E has broadcast 20 distinct callsigns, including RYR985X, RYR89XA, RYR5TP, RYR3NG, RYR9BJ.