Apparatus

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sensors Mode-S transponder

4CA7B5

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EFZ · BOEING 737-800

Hex
4CA7B5
Octal
23123665
Decimal
5,023,669
Country
IE
Tail
EI-EFZ
Type
B738
Broadcasting now · callsign RYR89SN · 34,000 ft
Flights observed
321
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Current position

4CA7B5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA7B5 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
RYR80DH Ryanair 5 2026-04-18
RYR8LX Ryanair 4 2026-04-25
RYR17TD Ryanair 4 2026-04-25
RYR95HJ Ryanair 3 2026-05-21
RYR86XQ Ryanair 3 2026-04-24
RYR86QT - 3 2026-04-16
RYR81PR Ryanair 3 2026-04-24
RYR5WL Ryanair 3 2026-04-18
RYR9VP Ryanair 2 2026-04-15
RYR9PG Ryanair 2 2026-05-07
RYR9GR Ryanair 2 2026-04-23
RYR99JY Ryanair 2 2026-05-30
RYR98KN Ryanair 2 2026-05-04
RYR9693 Ryanair 2 2026-05-11
RYR95PT Ryanair 2 2026-05-29
RYR84FW Ryanair 2 2026-04-25
RYR83LD - 2 2026-04-16
RYR82UJ Ryanair 2 2026-05-07
RYR82NW Ryanair 2 2026-05-22
RYR8056 Ryanair 2 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 RYR99JY CAG → HHN May 30, 09:10 UTCMay 30, 10:50 UTC1h 40m
2026-05-30 RYR27EX HHN → CAG May 30, 06:15 UTCMay 30, 07:45 UTC1h 30m
2026-05-29 RYR9WF STN → VLC May 29, 20:25 UTCMay 29, 23:05 UTC2h 40m
2026-05-29 RYR7865 HHN → AGP May 29, 17:00 UTCMay 29, 19:20 UTC2h 20m
2026-05-29 RYR76NC PMI → HHN May 29, 14:05 UTCMay 29, 16:00 UTC1h 55m
2026-05-29 RYR95PT HHN → PMI May 29, 11:00 UTCMay 29, 12:40 UTC1h 40m
2026-05-29 RYR529D GRO → HHN May 29, 08:35 UTCMay 29, 10:10 UTC1h 35m
2026-05-29 RYR65FQ BDS → STN May 29, 06:10 UTCMay 29, 07:30 UTC1h 20m
2026-05-28 RYR45SY ALC → HHN May 28, 18:50 UTCMay 28, 21:00 UTC2h 10m
2026-05-28 RYR27CF HHN → ALC May 28, 15:35 UTCMay 28, 17:35 UTC2h 0m
2026-05-28 RYR6207 TSF → HHN May 28, 13:40 UTCMay 28, 14:30 UTC50m
2026-05-28 RYR6206 CTA → FCO May 28, 11:55 UTCMay 28, 12:55 UTC1h 0m
2026-05-28 RYR99JY CAG → HHN May 28, 08:45 UTCMay 28, 10:25 UTC1h 40m
2026-05-28 RYR27EX HHN → CAG May 28, 06:05 UTCMay 28, 07:35 UTC1h 30m
2026-05-27 RYR2792 TFS → HHN May 27, 19:20 UTCMay 27, 23:15 UTC3h 55m
2026-05-27 RYR2793 HHN → TFS May 27, 13:45 UTCMay 27, 17:55 UTC4h 10m
2026-05-27 RYR67RA NDR → HHN May 27, 10:00 UTCMay 27, 12:45 UTC2h 45m
2026-05-27 RYR9PY DUB → LBA May 27, 06:15 UTCMay 27, 08:50 UTC2h 35m
2026-05-26 RYR76NC PMI → HHN May 26, 16:59 UTCMay 26, 18:45 UTC1h 45m
2026-05-26 RYR95PT HHN → PMI May 26, 14:05 UTCMay 26, 15:49 UTC1h 45m
2026-05-26 RYR63RY STN → HHN May 26, 12:20 UTCMay 26, 13:10 UTC50m
2026-05-26 RYR7JY AGP → BHX May 26, 09:59 UTCMay 26, 11:09 UTC1h 10m
2026-05-26 RYR701 STN → KIR May 26, 08:04 UTCMay 26, 09:04 UTC1h 0m
2026-05-25 RYR24ZZ CGN → STN May 25, 18:20 UTCMay 25, 19:10 UTC50m
2026-05-25 RYR11YT ARN → CGN May 25, 15:25 UTCMay 25, 17:05 UTC1h 40m
2026-05-25 RYR77PM CGN → ARN May 25, 12:35 UTCMay 25, 14:20 UTC1h 45m
2026-05-25 RYR76YY WRO → BGY May 25, 09:30 UTCMay 25, 11:25 UTC1h 55m
2026-05-25 RYR78FG CGN → PMI May 25, 06:00 UTCMay 25, 07:55 UTC1h 55m
2026-05-24 RYR12GG PMI → CGN May 24, 19:30 UTCMay 24, 21:35 UTC2h 5m
2026-05-24 RYR7NX KTW → STN May 24, 16:20 UTCMay 24, 18:15 UTC1h 55m
2026-05-24 RYR7VZ ZAD → WMI May 24, 12:55 UTCMay 24, 15:05 UTC2h 10m
2026-05-24 RYR8056 CGN → CFU May 24, 09:55 UTCMay 24, 11:55 UTC2h 0m
2026-05-24 RYR2NN DUB → KIR May 24, 08:00 UTCMay 24, 09:05 UTC1h 5m
2026-05-24 RYR70PH CGN → BGY May 24, 05:40 UTCMay 24, 06:40 UTC1h 0m
2026-05-23 RYR13ZB STN → HHN May 23, 19:35 UTCMay 23, 20:45 UTC1h 10m
2026-05-23 RYR89VJ VIE → BGY May 23, 17:30 UTCMay 23, 18:45 UTC1h 15m
2026-05-23 RYR53SE STN → DUB May 23, 14:20 UTCMay 23, 16:20 UTC2h 0m
2026-05-23 RYR20KL CGN → PMI May 23, 11:15 UTCMay 23, 13:05 UTC1h 50m
2026-05-23 RYR84BB MAN → CGN May 23, 07:55 UTCMay 23, 09:15 UTC1h 20m
2026-05-23 RYR9ME PEG → CRL May 23, 05:25 UTCMay 23, 06:45 UTC1h 20m
2026-05-22 RYR82NW DUB → KRK May 22, 19:20 UTCMay 22, 21:35 UTC2h 15m
2026-05-22 RYR2GJ CGN → ALC May 22, 16:05 UTCMay 22, 18:10 UTC2h 5m
2026-05-22 RYR76SW STN → CGN May 22, 14:00 UTCMay 22, 14:55 UTC55m
2026-05-22 RYR24ZZ CGN → STN May 22, 12:00 UTCMay 22, 13:00 UTC1h 0m
2026-05-22 RYR51AD PMI → CGN May 22, 09:15 UTCMay 22, 11:15 UTC2h 0m
2026-05-22 RYR159M CGN → PMI May 22, 06:00 UTCMay 22, 07:50 UTC1h 50m
2026-05-21 RYR151B ARN → CGN May 21, 21:35 UTCMay 21, 23:20 UTC1h 45m
2026-05-21 RYR4772 CGN → ARN May 21, 18:15 UTCMay 21, 19:55 UTC1h 40m
2026-05-21 RYR2NN DUB → KIR May 21, 12:40 UTCMay 21, 13:40 UTC1h 0m
2026-05-21 RYR70PH CGN → BGY May 21, 10:50 UTCMay 21, 11:50 UTC1h 0m

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

Mode-S 4CA7B5 frequently asked

What is Mode-S code 4CA7B5?
4CA7B5 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EFZ.
Where is Mode-S 4CA7B5 registered?
Mode-S code 4CA7B5 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA7B5 broadcasting right now?
Yes. Mode-S 4CA7B5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA7B5, octal 23123665, decimal 5,023,669.
What flights does 4CA7B5 operate?
Mode-S 4CA7B5 has broadcast 20 distinct callsigns, including RYR80DH, RYR8LX, RYR17TD, RYR95HJ, RYR86XQ.