Apparatus

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sensors Mode-S transponder

4CA9CF

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EVG · BOEING 737-800

Hex
4CA9CF
Octal
23124717
Decimal
5,024,207
Country
IE
Tail
EI-EVG
Type
B738
Broadcasting now · callsign RYR51HR · 38,000 ft
Flights observed
592
Distinct callsigns
20
Country
IE
Last broadcast
7h ago

Current position

4CA9CF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA9CF 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
RYR653C Ryanair 10 2026-05-14
RYR1QM Ryanair 9 2026-05-14
RYR98QX Ryanair 7 2026-05-05
RYR50PU Ryanair 7 2026-05-05
RYR4HW Ryanair 7 2026-05-08
RYR96UL Ryanair 6 2026-05-14
RYR84QP Ryanair 6 2026-05-14
RYR23WP - 6 2026-05-08
RYR87XX Ryanair 5 2026-05-10
RYR7FU - 4 2026-07-06
RYR72GH - 4 2026-07-09
RYR6GT Ryanair 4 2026-05-10
RYR6468 Ryanair 4 2026-05-13
RYR5SG - 4 2026-07-09
RYR5RN Ryanair 4 2026-04-24
RYR56JH Ryanair 4 2026-05-07
RYR3UA - 4 2026-07-06
RYR34SQ Ryanair 4 2026-05-10
RYR305R Ryanair 4 2026-05-10
RYR27UN Ryanair 4 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR4WF MAN → BCN Jul 14, 19:30 UTCJul 14, 21:40 UTC2h 10m
2026-07-14 RYR5VN BCN → MAN Jul 14, 16:35 UTCJul 14, 18:30 UTC1h 55m
2026-07-14 RYR54SE - Jul 14, 14:10 UTCJul 14, 15:30 UTC1h 20m
2026-07-14 RYR8KY - Jul 14, 11:20 UTCJul 14, 12:35 UTC1h 15m
2026-07-14 RYR42TA LPL → BCN Jul 14, 07:50 UTCJul 14, 09:55 UTC2h 5m
2026-07-14 RYR90RR BCN → LPL Jul 14, 04:50 UTCJul 14, 06:50 UTC2h 0m
2026-07-13 RYR66CW MAH → BCN Jul 13, 21:50 UTCJul 13, 22:25 UTC35m
2026-07-13 RYR7509 BCN → MAH Jul 13, 20:30 UTCJul 13, 21:05 UTC35m
2026-07-13 RYR37KT - Jul 13, 17:10 UTCJul 13, 19:10 UTC2h 0m
2026-07-13 RYR66YZ VIE → DUB Jul 13, 13:30 UTCJul 13, 16:00 UTC2h 30m
2026-07-13 RYR79DW - Jul 13, 10:25 UTCJul 13, 12:35 UTC2h 10m
2026-07-13 RYR2PN GLA → DUB Jul 13, 08:40 UTCJul 13, 09:30 UTC50m
2026-07-13 RYR3B DUB → GLA Jul 13, 07:10 UTCJul 13, 07:50 UTC40m
2026-07-12 RYR7SF KGS → DUB Jul 12, 18:45 UTCJul 12, 22:55 UTC4h 10m
2026-07-12 RYR65HX DUB → KGS Jul 12, 14:01 UTCJul 12, 17:50 UTC3h 50m
2026-07-12 RYR3QZ - Jul 12, 10:10 UTCJul 12, 12:30 UTC2h 20m
2026-07-12 RYR40TF - Jul 12, 06:50 UTCJul 12, 09:05 UTC2h 15m
2026-07-11 RYR34QB LGW → DUB Jul 11, 21:50 UTCJul 11, 22:40 UTC50m
2026-07-11 RYR96HW - Jul 11, 19:50 UTCJul 11, 20:45 UTC55m
2026-07-11 RYR14GR - Jul 11, 16:45 UTCJul 11, 18:50 UTC2h 5m
2026-07-11 RYR14XK - Jul 11, 12:45 UTCJul 11, 14:45 UTC2h 0m
2026-07-11 RYR4CU - Jul 11, 09:10 UTCJul 11, 11:30 UTC2h 20m
2026-07-11 RYR4XW DUB → LIS Jul 11, 05:50 UTCJul 11, 08:10 UTC2h 20m
2026-07-10 RYR61FA CGN → DUB Jul 10, 21:25 UTCJul 10, 22:55 UTC1h 30m
2026-07-10 RYR7ZU - Jul 10, 19:10 UTCJul 10, 20:35 UTC1h 25m
2026-07-10 RYR33ZB - Jul 10, 16:30 UTCJul 10, 17:40 UTC1h 10m
2026-07-10 RYR20AU - Jul 10, 14:00 UTCJul 10, 15:10 UTC1h 10m
2026-07-10 RYR12KH - Jul 10, 10:10 UTCJul 10, 12:35 UTC2h 25m
2026-07-10 RYR4GZ - Jul 10, 05:10 UTCJul 10, 07:25 UTC2h 15m
2026-07-09 RYR7NM - Jul 9, 17:25 UTCJul 9, 19:10 UTC1h 45m
2026-07-09 RYR52UR - Jul 9, 15:05 UTCJul 9, 16:35 UTC1h 30m
2026-07-09 RYR67FC - Jul 9, 12:55 UTCJul 9, 14:05 UTC1h 10m
2026-07-09 RYR3XZ - Jul 9, 10:35 UTCJul 9, 11:55 UTC1h 20m
2026-07-09 RYR72GH - Jul 9, 08:35 UTCJul 9, 09:40 UTC1h 5m
2026-07-09 RYR5SG - Jul 9, 06:30 UTCJul 9, 07:15 UTC45m
2026-07-08 RYR72GH - Jul 8, 19:55 UTCJul 8, 21:00 UTC1h 5m
2026-07-08 RYR5SG - Jul 8, 18:05 UTCJul 8, 18:50 UTC45m
2026-07-08 RYR7NM - Jul 8, 15:35 UTCJul 8, 17:15 UTC1h 40m
2026-07-08 RYR675G - Jul 8, 11:45 UTCJul 8, 12:35 UTC50m
2026-07-08 RYR8415 - Jul 8, 09:25 UTCJul 8, 10:10 UTC45m
2026-07-08 RYR52UR - Jul 8, 05:30 UTCJul 8, 06:55 UTC1h 25m
2026-07-07 RYR4BW PMI → BUD Jul 7, 14:05 UTCJul 7, 16:20 UTC2h 15m
2026-07-07 RYR7QP TRN → CTA Jul 7, 11:10 UTCJul 7, 13:10 UTC2h 0m
2026-07-07 RYR4RQ - Jul 7, 07:50 UTCJul 7, 09:50 UTC2h 0m
2026-07-07 RYR15BH - Jul 7, 05:20 UTCJul 7, 07:10 UTC1h 50m
2026-07-06 RYR3UA - Jul 6, 17:15 UTCJul 6, 18:25 UTC1h 10m
2026-07-06 RYR7FU - Jul 6, 14:55 UTCJul 6, 15:50 UTC55m
2026-07-06 RYR5X VXO → ZAD Jul 6, 12:45 UTCJul 6, 14:00 UTC1h 15m
2026-07-06 RYR2805 - Jul 6, 10:25 UTCJul 6, 11:40 UTC1h 15m
2026-07-06 RYR93QA - Jul 6, 07:25 UTCJul 6, 08:30 UTC1h 5m

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

Mode-S 4CA9CF frequently asked

What is Mode-S code 4CA9CF?
4CA9CF is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EVG.
Where is Mode-S 4CA9CF registered?
Mode-S code 4CA9CF is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9CF broadcasting right now?
Yes. Mode-S 4CA9CF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9CF, octal 23124717, decimal 5,024,207.
What flights does 4CA9CF operate?
Mode-S 4CA9CF has broadcast 20 distinct callsigns, including RYR653C, RYR1QM, RYR98QX, RYR50PU, RYR4HW.