Apparatus

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sensors Mode-S transponder

4CAE63

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IJN · BOEING 737 MAX 8

Hex
4CAE63
Octal
23127143
Decimal
5,025,379
Country
IE
Tail
EI-IJN
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
525
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CAE63.

Country allocation

The ICAO 24-bit address 4CAE63 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
RYR9UR Ryanair 3 2026-05-01
RYR99RH Ryanair 3 2026-06-14
RYR88FE Ryanair 3 2026-06-14
RYR88BE Ryanair 3 2026-04-29
RYR7GD - 3 2026-07-13
RYR7DU Ryanair 3 2026-04-18
RYR76EK Ryanair 3 2026-04-29
RYR4BZ - 3 2026-07-13
RYR9XF Ryanair 2 2026-07-13
RYR9WG Ryanair 2 2026-06-04
RYR9TN Ryanair 2 2026-04-13
RYR9CB - 2 2026-06-22
RYR9AH Ryanair 2 2026-04-29
RYR99YJ Ryanair 2 2026-06-11
RYR981Y Ryanair 2 2026-05-06
RYR9523 - 2 2026-07-05
RYR93VX - 2 2026-07-04
RYR92ZR - 2 2026-07-12
RYR90XP Ryanair 2 2026-05-03
RYR8UE Ryanair 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 RYR81BL - Jul 15, 07:00 UTCJul 15, 08:45 UTC1h 45m
2026-07-14 RYR6PD - Jul 14, 20:15 UTCJul 14, 23:45 UTC3h 29m
2026-07-14 RYR77QQ EMA → TFS Jul 14, 14:55 UTCJul 14, 19:00 UTC4h 5m
2026-07-14 RYR19SY NOC → EMA Jul 14, 12:45 UTCJul 14, 13:35 UTC50m
2026-07-14 RYR63XL EMA → NOC Jul 14, 11:05 UTCJul 14, 12:00 UTC55m
2026-07-14 RYR8MV - Jul 14, 08:00 UTCJul 14, 10:20 UTC2h 20m
2026-07-14 RYR61MJ EMA → CIA Jul 14, 04:50 UTCJul 14, 07:00 UTC2h 10m
2026-07-13 RYR4BZ - Jul 13, 22:05 UTCJul 14, 00:05 UTC2h 0m
2026-07-13 RYR7GD - Jul 13, 18:45 UTCJul 13, 20:45 UTC2h 0m
2026-07-13 RYR9XF BLQ → MAD Jul 13, 15:45 UTCJul 13, 17:30 UTC1h 45m
2026-07-13 RYR3JF DUB → LGW Jul 13, 12:55 UTCJul 13, 14:45 UTC1h 50m
2026-07-13 RYR62AD WRO → EMA Jul 13, 10:10 UTCJul 13, 12:05 UTC1h 55m
2026-07-13 RYR24FF EMA → WRO Jul 13, 07:35 UTCJul 13, 09:15 UTC1h 40m
2026-07-12 RYR4BZ - Jul 12, 21:30 UTCJul 12, 23:35 UTC2h 5m
2026-07-12 RYR7GD - Jul 12, 18:01 UTCJul 12, 20:05 UTC2h 5m
2026-07-12 RYR55FV - Jul 12, 14:35 UTCJul 12, 16:40 UTC2h 5m
2026-07-12 RYR92ZR - Jul 12, 11:15 UTCJul 12, 13:35 UTC2h 20m
2026-07-12 RYR2CD - Jul 12, 09:10 UTCJul 12, 10:25 UTC1h 15m
2026-07-12 RYR295J - Jul 12, 06:55 UTCJul 12, 08:15 UTC1h 20m
2026-07-11 RYR62AD WRO → EMA Jul 11, 21:50 UTCJul 11, 23:35 UTC1h 45m
2026-07-11 RYR24FF EMA → WRO Jul 11, 19:10 UTCJul 11, 20:50 UTC1h 40m
2026-07-11 RYR7UL BER → EMA Jul 11, 16:45 UTCJul 11, 18:20 UTC1h 35m
2026-07-11 RYR1638 EMA → BER Jul 11, 14:35 UTCJul 11, 16:00 UTC1h 25m
2026-07-11 RYR19SY NOC → EMA Jul 11, 12:30 UTCJul 11, 13:15 UTC45m
2026-07-11 RYR63XL EMA → NOC Jul 11, 10:35 UTCJul 11, 11:30 UTC55m
2026-07-11 RYR8086 PRG → EMA Jul 11, 08:05 UTCJul 11, 09:50 UTC1h 45m
2026-07-11 RYR6T EMA → PRG Jul 11, 05:20 UTCJul 11, 07:00 UTC1h 40m
2026-07-10 RYR780Y KRK → EMA Jul 10, 22:15 UTCJul 11, 00:20 UTC2h 5m
2026-07-10 RYR41BH - Jul 10, 19:30 UTCJul 10, 21:25 UTC1h 55m
2026-07-10 RYR245B - Jul 10, 16:25 UTCJul 10, 18:35 UTC2h 10m
2026-07-10 RYR9085 - Jul 10, 12:15 UTCJul 10, 14:50 UTC2h 35m
2026-07-10 RYR55FV - Jul 10, 08:45 UTCJul 10, 11:15 UTC2h 30m
2026-07-10 RYR92ZR EMA → ALC Jul 10, 05:20 UTCJul 10, 07:40 UTC2h 20m
2026-07-09 RYR4BZ - Jul 9, 21:50 UTCJul 9, 23:45 UTC1h 55m
2026-07-09 RYR7GD - Jul 9, 18:35 UTCJul 9, 20:40 UTC2h 5m
2026-07-09 RYR9XF BLQ → MAD Jul 9, 15:55 UTCJul 9, 17:40 UTC1h 45m
2026-07-09 RYR3JF DUB → LGW Jul 9, 13:00 UTCJul 9, 15:05 UTC2h 5m
2026-07-09 RYR6MH XRY → BCN Jul 9, 10:35 UTCJul 9, 12:05 UTC1h 30m
2026-07-09 RYR4RG - Jul 9, 08:10 UTCJul 9, 09:45 UTC1h 35m
2026-07-08 RYR780Y KRK → EMA Jul 8, 22:45 UTCJul 9, 01:00 UTC2h 15m
2026-07-08 RYR41BH EMA → KRK Jul 8, 19:50 UTCJul 8, 21:55 UTC2h 5m
2026-07-08 RYR8VT BCN → EMA Jul 8, 17:10 UTCJul 8, 19:00 UTC1h 50m
2026-07-08 RYR9392 EMA → BCN Jul 8, 13:45 UTCJul 8, 15:35 UTC1h 50m
2026-07-08 RYR62LK DUB → EMA Jul 8, 12:10 UTCJul 8, 12:50 UTC40m
2026-07-08 RYR96SR - Jul 8, 09:50 UTCJul 8, 10:30 UTC40m
2026-07-08 RYR6NY DUB → KIR Jul 8, 08:35 UTCJul 8, 09:10 UTC35m
2026-07-08 RYR1FT - Jul 8, 07:20 UTCJul 8, 07:50 UTC30m
2026-07-08 RYR146G DUB → MAN Jul 8, 05:45 UTCJul 8, 06:20 UTC35m
2026-07-07 RYR8YD MLA → DUB Jul 7, 18:25 UTCJul 7, 21:45 UTC3h 20m
2026-07-07 RYR6GL DUB → MLA Jul 7, 14:10 UTCJul 7, 17:25 UTC3h 15m

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

Mode-S 4CAE63 frequently asked

What is Mode-S code 4CAE63?
4CAE63 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IJN.
Where is Mode-S 4CAE63 registered?
Mode-S code 4CAE63 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE63 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE63, octal 23127143, decimal 5,025,379.
What flights does 4CAE63 operate?
Mode-S 4CAE63 has broadcast 20 distinct callsigns, including RYR9UR, RYR99RH, RYR88FE, RYR88BE, RYR7GD.