Apparatus

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sensors Mode-S transponder

4CADBC

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IGJ · BOEING 737 MAX 8

Hex
4CADBC
Octal
23126674
Decimal
5,025,212
Country
IE
Tail
EI-IGJ
Type
B38M
Broadcasting now · callsign RYR10BF · 7,000 ft
Flights observed
274
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Current position

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

Country allocation

The ICAO 24-bit address 4CADBC 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
RYR55EB Ryanair 5 2026-04-23
RYR136H Ryanair 5 2026-04-25
RYR9RE Ryanair 4 2026-04-23
RYR61SZ Ryanair 4 2026-04-25
RYR55XJ Ryanair 4 2026-05-16
RYR53NF Ryanair 4 2026-04-21
RYR4011 Ryanair 4 2026-05-14
RYR29NH Ryanair 4 2026-04-21
RYR75TJ Ryanair 3 2026-04-23
RYR75AC Ryanair 3 2026-04-19
RYR3WT - 3 2026-04-13
RYR3DT Ryanair 3 2026-05-14
RYR37VB Ryanair 3 2026-04-23
RYR30RG Ryanair 3 2026-05-16
RYR29UC Ryanair 3 2026-04-27
RYR9SW Ryanair 2 2026-05-28
RYR9EF Ryanair 2 2026-04-15
RYR9314 - 2 2026-04-17
RYR92MY Ryanair 2 2026-04-15
RYR8QN Ryanair 2 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 RYR40AU BHX → VLC May 30, 06:55 UTCMay 30, 08:10 UTC1h 15m
2026-05-29 RYR368B REU → DUB May 29, 21:40 UTCMay 29, 23:40 UTC2h 0m
2026-05-29 RYR18NH DUB → REU May 29, 18:35 UTCMay 29, 20:30 UTC1h 55m
2026-05-29 RYR51YC LTN → DUB May 29, 16:40 UTCMay 29, 17:30 UTC50m
2026-05-29 RYR86DX NRN → NDR May 29, 14:55 UTCMay 29, 15:40 UTC45m
2026-05-29 RYR94JD IBZ → AGP May 29, 13:00 UTCMay 29, 13:45 UTC45m
2026-05-29 RYR429R RIX → LBA May 29, 08:15 UTCMay 29, 10:45 UTC2h 30m
2026-05-29 RYR82PQ LBA → RIX May 29, 05:10 UTCMay 29, 07:25 UTC2h 15m
2026-05-28 RYR9SW WAW → LBA May 28, 19:55 UTCMay 28, 22:00 UTC2h 5m
2026-05-28 RYR7664 TSF → OPO May 28, 16:50 UTCMay 28, 18:55 UTC2h 5m
2026-05-28 RYR77SB TFS → LBA May 28, 11:05 UTCMay 28, 15:05 UTC4h 0m
2026-05-28 RYR6GE GRO → EMA May 28, 05:55 UTCMay 28, 09:40 UTC3h 45m
2026-05-27 RYR6HF ATH → LTN May 27, 20:15 UTCMay 27, 23:50 UTC3h 35m
2026-05-27 RYR4TM FUE → LTN May 27, 15:05 UTCMay 27, 18:45 UTC3h 40m
2026-05-27 RYR5421 OTP → LBA May 27, 09:00 UTCMay 27, 12:05 UTC3h 5m
2026-05-27 RYR76DD EDI → BUD May 27, 05:09 UTCMay 27, 07:55 UTC2h 45m
2026-05-26 RYR42SX DUB → LBA May 26, 21:59 UTCMay 26, 22:29 UTC30m
2026-05-26 RYR1FD DUB → LPL May 26, 20:24 UTCMay 26, 21:00 UTC35m
2026-05-26 RYR54NN REU → LBA May 26, 16:40 UTCMay 26, 18:30 UTC1h 50m
2026-05-26 RYR6UF EDI → HAM May 26, 13:45 UTCMay 26, 15:49 UTC2h 5m
2026-05-26 RYR5421 OTP → LBA May 26, 08:54 UTCMay 26, 11:54 UTC3h 0m
2026-05-26 RYR76DD EDI → BUD May 26, 05:15 UTCMay 26, 08:10 UTC2h 55m
2026-05-25 RYR28UT IBZ → LBA May 25, 21:45 UTCMay 25, 23:49 UTC2h 5m
2026-05-25 RYR27QJ LBA → IBZ May 25, 18:20 UTCMay 25, 20:55 UTC2h 35m
2026-05-25 RYR305M CHQ → LBA May 25, 11:25 UTCMay 25, 15:05 UTC3h 40m
2026-05-25 RYR18PW KRK → DUB May 25, 06:25 UTCMay 25, 10:00 UTC3h 35m
2026-05-24 RYR6HF ATH → LTN May 24, 17:15 UTCMay 24, 21:00 UTC3h 45m
2026-05-24 RYR4TM FUE → LTN May 24, 12:05 UTCMay 24, 16:00 UTC3h 55m
2026-05-24 RYR429R RIX → LBA May 24, 08:15 UTCMay 24, 10:35 UTC2h 20m
2026-05-24 RYR82PQ LBA → RIX May 24, 05:10 UTCMay 24, 07:25 UTC2h 15m
2026-05-23 RYR551A GRO → LBA May 23, 21:45 UTCMay 23, 23:40 UTC1h 55m
2026-05-23 RYR57CE LBA → GRO May 23, 19:00 UTCMay 23, 20:50 UTC1h 50m
2026-05-23 RYR9SW WAW → LBA May 23, 16:00 UTCMay 23, 18:05 UTC2h 5m
2026-05-23 RYR7664 TSF → OPO May 23, 12:35 UTCMay 23, 14:35 UTC2h 0m
2026-05-23 RYR64BV DUB → LBA May 23, 09:40 UTCMay 23, 10:15 UTC35m
2026-05-23 RYR9329 LBA → DUB May 23, 08:10 UTCMay 23, 08:50 UTC40m
2026-05-22 RYR54GN ALC → LBA May 22, 20:25 UTCMay 22, 22:40 UTC2h 15m
2026-05-22 RYR6PP LBA → ALC May 22, 17:00 UTCMay 22, 19:25 UTC2h 25m
2026-05-22 RYR55PD DUB → LBA May 22, 15:05 UTCMay 22, 15:40 UTC35m
2026-05-22 RYR7ZW RZE → LTN May 22, 13:15 UTCMay 22, 14:05 UTC50m
2026-05-22 RYR5UJ BLQ → BOD May 22, 10:50 UTCMay 22, 12:00 UTC1h 10m
2026-05-22 RYR60LN CCF → DUB May 22, 07:55 UTCMay 22, 09:45 UTC1h 50m
2026-05-22 RYR90RJ PSA → BDS May 22, 05:05 UTCMay 22, 06:55 UTC1h 50m
2026-05-21 RYR307 SZG → STN May 21, 21:40 UTCMay 21, 22:35 UTC55m
2026-05-21 RYR306 ZAG → VIE May 21, 19:55 UTCMay 21, 20:45 UTC50m
2026-05-21 RYR368B REU → DUB May 21, 16:45 UTCMay 21, 18:50 UTC2h 5m
2026-05-21 RYR18NH DUB → REU May 21, 13:20 UTCMay 21, 15:30 UTC2h 10m
2026-05-21 RYR29YE FAO → DUB May 21, 09:35 UTCMay 21, 12:00 UTC2h 25m
2026-05-21 RYR69XF DUB → FAO May 21, 06:05 UTCMay 21, 08:45 UTC2h 40m
2026-05-20 RYR81SV STN → DUB May 20, 22:35 UTCMay 20, 23:30 UTC55m

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

Mode-S 4CADBC frequently asked

What is Mode-S code 4CADBC?
4CADBC is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IGJ.
Where is Mode-S 4CADBC registered?
Mode-S code 4CADBC is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADBC broadcasting right now?
Yes. Mode-S 4CADBC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADBC, octal 23126674, decimal 5,025,212.
What flights does 4CADBC operate?
Mode-S 4CADBC has broadcast 20 distinct callsigns, including RYR55EB, RYR136H, RYR9RE, RYR61SZ, RYR55XJ.