Apparatus

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sensors Mode-S transponder

4CAD12

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HGZ · BOEING 737 MAX 8

Hex
4CAD12
Octal
23126422
Decimal
5,025,042
Country
IE
Tail
EI-HGZ
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
218
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CAD12.

Country allocation

The ICAO 24-bit address 4CAD12 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
RYR3WD Ryanair 5 2026-05-20
RYR088 Ryanair 5 2026-05-20
RYR771C Ryanair 3 2026-05-27
RYR6369 Ryanair 3 2026-05-27
RYR62DA Ryanair 3 2026-05-13
RYR59TN - 3 2026-04-15
RYR3VM Ryanair 3 2026-05-05
RYR990N Ryanair 2 2026-05-29
RYR8HM Ryanair 2 2026-05-13
RYR8334 Ryanair 2 2026-05-12
RYR7RA Ryanair 2 2026-04-25
RYR644 Ryanair 2 2026-04-25
RYR5KT Ryanair 2 2026-05-19
RYR57ME - 2 2026-04-13
RYR57DW Ryanair 2 2026-05-28
RYR56AZ Ryanair 2 2026-05-28
RYR3RX - 2 2026-05-05
RYR385 Ryanair 2 2026-05-19
RYR384 Ryanair 2 2026-05-19
RYR30FY Ryanair 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR76SR - May 29, 20:00 UTCMay 30, 00:00 UTC4h 0m
2026-05-29 RYR3JL KRK → STN May 29, 14:40 UTCMay 29, 18:45 UTC4h 6m
2026-05-29 RYR990N LIS → EDI May 29, 11:00 UTCMay 29, 13:40 UTC2h 40m
2026-05-29 RYR668T BCN → BGY May 29, 06:35 UTCMay 29, 09:30 UTC2h 55m
2026-05-28 RYR44UC FAO → EDI May 28, 20:40 UTCMay 28, 23:40 UTC3h 0m
2026-05-28 RYR66AH EDI → FAO May 28, 16:50 UTCMay 28, 19:45 UTC2h 55m
2026-05-28 RYR57DW BHX → FUE May 28, 10:55 UTCMay 28, 15:00 UTC4h 5m
2026-05-28 RYR56AZ EDI → LPA May 28, 05:15 UTCMay 28, 09:10 UTC3h 55m
2026-05-27 RYR771C TFS → EDI May 27, 19:50 UTCMay 27, 23:45 UTC3h 55m
2026-05-27 RYR6369 BCN → PMI May 27, 14:30 UTCMay 27, 18:35 UTC4h 5m
2026-05-27 RYR4PP SOF → NAP May 27, 11:15 UTCMay 27, 13:15 UTC2h 0m
2026-05-27 RYR917L EDI → PRG May 27, 08:20 UTCMay 27, 10:15 UTC1h 55m
2026-05-26 RYR771C TFS → EDI May 26, 19:55 UTCMay 27, 00:04 UTC4h 10m
2026-05-26 RYR6369 BCN → PMI May 26, 14:24 UTCMay 26, 18:30 UTC4h 5m
2026-05-26 RYR8UL AGP → OPO May 26, 12:35 UTCMay 26, 13:19 UTC45m
2026-05-26 RYR86GY EDI → DUB May 26, 10:50 UTCMay 26, 11:34 UTC45m
2026-05-26 RYR59VR TLS → EDI May 26, 07:59 UTCMay 26, 09:49 UTC1h 50m
2026-05-26 RYR2LK STN → BGY May 26, 05:05 UTCMay 26, 07:05 UTC2h 0m
2026-05-25 RYR79RN BTS → EDI May 25, 21:30 UTCMay 25, 23:49 UTC2h 20m
2026-05-25 RYR4TT BRI → MLA May 25, 18:40 UTCMay 25, 20:50 UTC2h 9m
2026-05-25 RYR5AT VCE → STN May 25, 17:00 UTCMay 25, 17:50 UTC50m
2026-05-25 RYR395K EDI → NOC May 25, 15:25 UTCMay 25, 16:05 UTC40m
2026-05-25 RYR4AR STN → PFO May 25, 10:20 UTCMay 25, 14:15 UTC3h 55m
2026-05-25 RYR4ZZ KRK → ARN May 25, 05:00 UTCMay 25, 08:45 UTC3h 45m
2026-05-24 RYR771C TFS → EDI May 24, 18:30 UTCMay 24, 21:45 UTC3h 15m
2026-05-24 RYR6369 BCN → PMI May 24, 13:10 UTCMay 24, 17:05 UTC3h 55m
2026-05-24 RYR94EE ALC → EDI May 24, 09:25 UTCMay 24, 12:05 UTC2h 40m
2026-05-24 RYR77SJ EDI → ALC May 24, 05:25 UTCMay 24, 07:55 UTC2h 30m
2026-05-23 RYR57DW BHX → FUE May 23, 20:00 UTCMay 24, 00:20 UTC4h 20m
2026-05-23 RYR56AZ EDI → LPA May 23, 14:35 UTCMay 23, 18:55 UTC4h 20m
2026-05-23 RYR5615 OTP → EDI May 23, 09:35 UTCMay 23, 12:50 UTC3h 15m
2026-05-23 RYR59CV EDI → OTP May 23, 05:35 UTCMay 23, 08:40 UTC3h 5m
2026-05-22 RYR40SJ EDI → FUE May 22, 14:00 UTCMay 22, 23:55 UTC9h 55m
2026-05-22 RYR6GV CCF → MAN May 22, 09:15 UTCMay 22, 12:40 UTC3h 25m
2026-05-22 RYR18KR EDI → SOF May 22, 05:00 UTCMay 22, 08:00 UTC3h 0m
2026-05-21 RYR38NW OPO → EDI May 21, 21:15 UTCMay 21, 23:30 UTC2h 15m
2026-05-21 RYR1YP WMI → BCN May 21, 17:45 UTCMay 21, 20:20 UTC2h 35m
2026-05-21 RYR1HF STN → BZG May 21, 14:50 UTCMay 21, 16:05 UTC1h 15m
2026-05-21 RYR85HE EDI → CRL May 21, 12:30 UTCMay 21, 13:40 UTC1h 10m
2026-05-21 RYR3GQ STN → CDT May 21, 08:55 UTCMay 21, 11:25 UTC2h 30m
2026-05-21 RYR6TG NAP → BGY May 21, 06:00 UTCMay 21, 08:05 UTC2h 5m
2026-05-20 RYR8G BUD → ATH May 20, 19:55 UTCMay 20, 22:50 UTC2h 55m
2026-05-20 RYR9XB STN → BGY May 20, 16:30 UTCMay 20, 18:55 UTC2h 25m
2026-05-20 RYR990N LIS → EDI May 20, 10:55 UTCMay 20, 13:35 UTC2h 40m
2026-05-20 RYR3WD EDI → GDN May 20, 08:50 UTCMay 20, 09:20 UTC30m
2026-05-20 RYR3WD EDI → GDN May 20, 08:05 UTCMay 20, 08:15 UTC10m
2026-05-20 RYR088 EMA → CFU May 20, 07:00 UTCMay 20, 07:10 UTC10m
2026-05-20 RYR088 EMA → CFU May 20, 05:45 UTCMay 20, 06:20 UTC35m
2026-05-19 RYR384 FNC → LIS May 19, 20:40 UTCMay 19, 21:20 UTC40m
2026-05-19 RYR384 FNC → LIS May 19, 19:55 UTCMay 19, 20:10 UTC15m

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

Mode-S 4CAD12 frequently asked

What is Mode-S code 4CAD12?
4CAD12 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HGZ.
Where is Mode-S 4CAD12 registered?
Mode-S code 4CAD12 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD12 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 4CAD12, octal 23126422, decimal 5,025,042.
What flights does 4CAD12 operate?
Mode-S 4CAD12 has broadcast 20 distinct callsigns, including RYR3WD, RYR088, RYR771C, RYR6369, RYR62DA.