Apparatus

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sensors Mode-S transponder

4CAE9A

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IKS · BOEING 737 MAX 8

Hex
4CAE9A
Octal
23127232
Decimal
5,025,434
Country
IE
Tail
EI-IKS
Type
B38M
No current signal · last broadcast Jul 26, 22:20 UTC
Flights observed
547
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:20 UTC

Last known position

Most recent position reported by Mode-S 4CAE9A.

Country allocation

The ICAO 24-bit address 4CAE9A 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
RYR57DW Ryanair 10 2026-06-11
RYR56AZ Ryanair 10 2026-06-11
RYR61KY Ryanair 9 2026-07-23
RYR3KV - 9 2026-07-23
RYR3NG Ryanair 7 2026-05-24
RYR985X Ryanair 6 2026-05-24
RYR8AL Ryanair 6 2026-07-18
RYR89XA Ryanair 6 2026-05-21
RYR75VP - 6 2026-07-18
RYR7125 Ryanair 6 2026-05-23
RYR5TP Ryanair 6 2026-05-21
RYR4AR Ryanair 6 2026-06-01
RYR40SJ - 6 2026-06-15
RYR8UL Ryanair 5 2026-06-04
RYR86GY Ryanair 5 2026-06-04
RYR66AH Ryanair 5 2026-06-10
RYR4ZZ Ryanair 5 2026-06-01
RYR3QV Ryanair 5 2026-06-15
RYR33JZ Ryanair 5 2026-05-23
RYR1RX - 5 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR8949 MRS → ACE Jul 26, 19:40 UTCJul 26, 22:20 UTC2h 40m
2026-07-26 RYR2306 NOC → ACE Jul 26, 11:00 UTCJul 26, 18:40 UTC7h 40m
2026-07-26 RYR2305 ACE → NOC Jul 26, 06:35 UTCJul 26, 10:10 UTC3h 35m
2026-07-25 RYR7QW STN → BLL Jul 25, 18:50 UTCJul 25, 22:10 UTC3h 20m
2026-07-25 RYR9VA - Jul 25, 09:20 UTCJul 25, 17:55 UTC8h 35m
2026-07-25 RYR2001 ACE → SCQ Jul 25, 06:30 UTCJul 25, 08:25 UTC1h 55m
2026-07-24 RYR9855 ZAG → ACE Jul 24, 17:55 UTCJul 24, 22:00 UTC4h 5m
2026-07-24 RYR9854 ACE → ZAG Jul 24, 14:05 UTCJul 24, 16:50 UTC2h 45m
2026-07-24 RYR2BW OTP → STN Jul 24, 08:20 UTCJul 24, 11:50 UTC3h 30m
2026-07-23 RYR3KV - Jul 23, 18:30 UTCJul 23, 22:10 UTC3h 40m
2026-07-23 RYR61KY LTN → ATH Jul 23, 14:15 UTCJul 23, 17:15 UTC3h 0m
2026-07-23 RYR2TZ NRN → BRI Jul 23, 09:30 UTCJul 23, 12:45 UTC3h 15m
2026-07-23 RYR6BZ LTN → BOJ Jul 23, 05:30 UTCJul 23, 08:20 UTC2h 50m
2026-07-22 RYR29XJ - Jul 22, 20:20 UTCJul 22, 22:35 UTC2h 15m
2026-07-22 RYR262A LTN → AGP Jul 22, 17:00 UTCJul 22, 19:20 UTC2h 20m
2026-07-22 RYR81EN NOC → LTN Jul 22, 14:50 UTCJul 22, 15:50 UTC1h 0m
2026-07-22 RYR5ZV STN → GOT Jul 22, 13:00 UTCJul 22, 14:00 UTC1h 0m
2026-07-22 RYR74FZ KUN → LTN Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-21 RYR1RX - Jul 21, 22:10 UTCJul 22, 00:00 UTC1h 50m
2026-07-21 RYR4AA CIA → STN Jul 21, 19:10 UTCJul 21, 20:45 UTC1h 35m
2026-07-21 RYR870T NOC → LTN Jul 21, 17:15 UTCJul 21, 18:15 UTC1h 0m
2026-07-21 RYR160Z LTN → NOC Jul 21, 15:20 UTCJul 21, 16:20 UTC1h 0m
2026-07-21 RYR3KV ATH → LTN Jul 21, 10:25 UTCJul 21, 14:05 UTC3h 40m
2026-07-21 RYR61KY LTN → ATH Jul 21, 06:15 UTCJul 21, 09:25 UTC3h 10m
2026-07-20 RYR870T NOC → LTN Jul 20, 18:00 UTCJul 20, 18:55 UTC55m
2026-07-20 RYR160Z - Jul 20, 16:10 UTCJul 20, 17:10 UTC1h 0m
2026-07-20 RYR9DY EFL → FRA Jul 20, 11:25 UTCJul 20, 14:45 UTC3h 20m
2026-07-20 RYR94AN LTN → LPA Jul 20, 06:05 UTCJul 20, 09:45 UTC3h 40m
2026-07-19 RYR34ZZ - Jul 19, 20:45 UTCJul 19, 23:10 UTC2h 25m
2026-07-19 RYR12KF - Jul 19, 17:25 UTCJul 19, 19:25 UTC2h 0m
2026-07-19 RYR2TZ NRN → BRI Jul 19, 12:10 UTCJul 19, 15:30 UTC3h 20m
2026-07-19 RYR6BZ - Jul 19, 08:20 UTCJul 19, 11:05 UTC2h 45m
2026-07-18 RYR34ZZ - Jul 18, 19:05 UTCJul 18, 21:30 UTC2h 25m
2026-07-18 RYR12KF - Jul 18, 15:20 UTCJul 18, 17:25 UTC2h 5m
2026-07-18 RYR75VP VNO → LTN Jul 18, 10:55 UTCJul 18, 13:30 UTC2h 35m
2026-07-18 RYR8AL LTN → RZE Jul 18, 07:45 UTCJul 18, 10:00 UTC2h 15m
2026-07-17 RYR95ND BCN → LTN Jul 17, 22:35 UTCJul 18, 00:15 UTC1h 40m
2026-07-17 RYR67AJ LTN → BCN Jul 17, 19:40 UTCJul 17, 21:25 UTC1h 45m
2026-07-17 RYR69QT - Jul 17, 16:10 UTCJul 17, 18:40 UTC2h 30m
2026-07-17 RYR39YC - Jul 17, 12:50 UTCJul 17, 15:10 UTC2h 20m
2026-07-17 RYR75VP VNO → LTN Jul 17, 09:04 UTCJul 17, 11:35 UTC2h 30m
2026-07-17 RYR8AL - Jul 17, 05:45 UTCJul 17, 08:00 UTC2h 15m
2026-07-16 RYR3KV ATH → LTN Jul 16, 19:45 UTCJul 16, 23:10 UTC3h 25m
2026-07-16 RYR61KY LTN → ATH Jul 16, 15:10 UTCJul 16, 18:10 UTC3h 0m
2026-07-16 RYR2TZ NRN → BRI Jul 16, 09:40 UTCJul 16, 13:00 UTC3h 20m
2026-07-16 RYR6BZ - Jul 16, 05:40 UTCJul 16, 08:25 UTC2h 45m
2026-07-15 RYR14AW TSF → LTN Jul 15, 19:50 UTCJul 15, 21:40 UTC1h 50m
2026-07-15 RYR3741 LTN → TSF Jul 15, 13:45 UTCJul 15, 15:25 UTC1h 40m
2026-07-15 RYR42WC - Jul 15, 09:40 UTCJul 15, 12:10 UTC2h 30m
2026-07-15 RYR6JC - Jul 15, 05:55 UTCJul 15, 08:25 UTC2h 30m

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

Mode-S 4CAE9A frequently asked

What is Mode-S code 4CAE9A?
4CAE9A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IKS.
Where is Mode-S 4CAE9A registered?
Mode-S code 4CAE9A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE9A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE9A, octal 23127232, decimal 5,025,434.
What flights does 4CAE9A operate?
Mode-S 4CAE9A has broadcast 20 distinct callsigns, including RYR57DW, RYR56AZ, RYR61KY, RYR3KV, RYR3NG.