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 Jul 26, 21:40 UTC
Flights observed
497
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 21:40 UTC

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
RYR74WC - 5 2026-07-07
RYR74TH - 5 2026-06-18
RYR3WD Ryanair 5 2026-05-20
RYR088 Ryanair 5 2026-05-20
RYR6CN - 4 2026-07-07
RYR5TP - 4 2026-07-23
RYR5MW Ryanair 4 2026-06-14
RYR58KV - 4 2026-06-16
RYR2WU - 4 2026-06-14
RYR2QX - 4 2026-06-17
RYR9RL - 3 2026-07-14
RYR985X Ryanair 3 2026-07-18
RYR89XA Ryanair 3 2026-07-23
RYR771C Ryanair 3 2026-05-27
RYR6369 Ryanair 3 2026-05-27
RYR62DA Ryanair 3 2026-05-13
RYR618X - 3 2026-07-14
RYR59TN - 3 2026-04-15
RYR59CV Ryanair 3 2026-05-31
RYR57DW Ryanair 3 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR79SJ LBA → FAO Jul 26, 19:55 UTCJul 26, 21:30 UTC1h 35m
2026-07-26 RYR274 ORK → STN Jul 26, 17:00 UTCJul 26, 18:45 UTC1h 45m
2026-07-26 RYR19YB ATH → MLA Jul 26, 14:35 UTCJul 26, 16:00 UTC1h 25m
2026-07-26 RYR7ZX FKB → FAO Jul 26, 12:15 UTCJul 26, 13:35 UTC1h 20m
2026-07-26 RYR973Z VNO → MLA Jul 26, 07:30 UTCJul 26, 10:35 UTC3h 5m
2026-07-26 RYR54RK CRL → SOF Jul 26, 03:45 UTCJul 26, 06:40 UTC2h 56m
2026-07-25 RYR93WG DUB → MLA Jul 25, 20:25 UTCJul 25, 23:35 UTC3h 10m
2026-07-25 RYR8MX ZTH → DUB Jul 25, 14:40 UTCJul 25, 18:25 UTC3h 45m
2026-07-25 RYR2BB WRO → AGP Jul 25, 10:15 UTCJul 25, 13:40 UTC3h 25m
2026-07-25 RYR2BB WRO → AGP Jul 25, 10:00 UTCJul 25, 10:05 UTC5m
2026-07-25 RYR10BF LGW → DUB Jul 25, 08:15 UTCJul 25, 09:05 UTC50m
2026-07-25 RYR40AU BHX → VLC Jul 25, 06:15 UTCJul 25, 07:10 UTC55m
2026-07-24 RYR7125 ACE → DUB Jul 24, 20:30 UTCJul 24, 23:50 UTC3h 20m
2026-07-24 RYR33JZ DUB → ACE Jul 24, 15:15 UTCJul 24, 18:45 UTC3h 30m
2026-07-24 RYR177H DUB → FUE Jul 24, 05:00 UTCJul 24, 13:55 UTC8h 55m
2026-07-23 RYR12KH AGP → DUB Jul 23, 18:50 UTCJul 23, 21:20 UTC2h 30m
2026-07-23 RYR3FF DUB → AGP Jul 23, 15:20 UTCJul 23, 17:50 UTC2h 30m
2026-07-23 RYR5TP - Jul 23, 10:45 UTCJul 23, 14:10 UTC3h 25m
2026-07-23 RYR89XA DUB → TFS Jul 23, 05:25 UTCJul 23, 09:15 UTC3h 50m
2026-07-22 RYR41RE BSL → ZAG Jul 22, 21:20 UTCJul 23, 00:40 UTC3h 20m
2026-07-22 RYR1UD DUB → TFS Jul 22, 16:00 UTCJul 22, 19:50 UTC3h 50m
2026-07-22 RYR5TP - Jul 22, 05:05 UTCJul 22, 13:45 UTC8h 40m
2026-07-21 RYR7329 LIS → DUB Jul 21, 19:35 UTCJul 21, 21:40 UTC2h 5m
2026-07-21 RYR9PA DUB → LIS Jul 21, 16:00 UTCJul 21, 18:20 UTC2h 20m
2026-07-21 RYR5TP - Jul 21, 11:10 UTCJul 21, 14:45 UTC3h 35m
2026-07-21 RYR89XA DUB → TFS Jul 21, 05:10 UTCJul 21, 09:00 UTC3h 50m
2026-07-20 RYR8RH - Jul 20, 19:25 UTCJul 20, 21:35 UTC2h 10m
2026-07-20 RYR46YM LUX → MRS Jul 20, 16:25 UTCJul 20, 18:25 UTC2h 0m
2026-07-20 RYR50NB - Jul 20, 14:00 UTCJul 20, 15:15 UTC1h 15m
2026-07-20 RYR66DT - Jul 20, 11:40 UTCJul 20, 12:55 UTC1h 15m
2026-07-20 RYR6NR CPH → DUB Jul 20, 08:20 UTCJul 20, 10:05 UTC1h 45m
2026-07-20 RYR34PP DUB → CPH Jul 20, 05:40 UTCJul 20, 07:30 UTC1h 50m
2026-07-19 RYR3AC - Jul 19, 20:15 UTCJul 19, 21:35 UTC1h 20m
2026-07-19 RYR40VL - Jul 19, 17:10 UTCJul 19, 18:20 UTC1h 10m
2026-07-19 RYR85YN - Jul 19, 12:35 UTCJul 19, 16:00 UTC3h 25m
2026-07-19 RYR177H DUB → FUE Jul 19, 07:20 UTCJul 19, 10:55 UTC3h 35m
2026-07-18 RYR9289 - Jul 18, 20:00 UTCJul 18, 23:15 UTC3h 15m
2026-07-18 RYR9288 DUB → BDS Jul 18, 16:20 UTCJul 18, 19:10 UTC2h 50m
2026-07-18 RYR3NG - Jul 18, 11:00 UTCJul 18, 14:25 UTC3h 25m
2026-07-18 RYR985X DUB → ACE Jul 18, 08:30 UTCJul 18, 08:40 UTC10m
2026-07-18 RYR985X DUB → ACE Jul 18, 05:15 UTCJul 18, 08:00 UTC2h 45m
2026-07-17 RYR2MN OPO → DUB Jul 17, 21:44 UTCJul 17, 23:45 UTC2h 0m
2026-07-17 RYR81YQ DUB → OPO Jul 17, 18:40 UTCJul 17, 20:40 UTC2h 0m
2026-07-17 RYR7RB HAM → DUB Jul 17, 16:10 UTCJul 17, 17:50 UTC1h 40m
2026-07-17 RYR26VC DUB → HAM Jul 17, 13:29 UTCJul 17, 15:00 UTC1h 30m
2026-07-17 RYR4CU LIS → DUB Jul 17, 08:49 UTCJul 17, 11:04 UTC2h 15m
2026-07-17 RYR4XW DUB → LIS Jul 17, 05:04 UTCJul 17, 07:25 UTC2h 20m
2026-07-16 RYR3AC - Jul 16, 20:19 UTCJul 16, 21:25 UTC1h 5m
2026-07-16 RYR40VL DUB → AMS Jul 16, 18:10 UTCJul 16, 19:14 UTC1h 5m
2026-07-16 RYR96GG - Jul 16, 14:35 UTCJul 16, 17:05 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-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 Jul 26, 21:40 UTC.
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 RYR74WC, RYR74TH, RYR3WD, RYR088, RYR6CN.