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sensors Mode-S transponder

4CAECE

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IRW · BEECH 200 Super King Air

Hex
4CAECE
Octal
23127316
Decimal
5,025,486
Country
IE
Tail
EI-IRW
Type
BE20
No current signal · last broadcast 14h ago
Flights observed
108
Distinct callsigns
4
Country
IE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4CAECE.

Country allocation

The ICAO 24-bit address 4CAECE 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 4 distinct

Callsign Airline Flights Last seen
EIIRW - 70 2026-07-18
CGI120F - 32 2026-07-19
CG120F - 5 2026-06-17
CGI120W - 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 CGI120F - Jul 19, 14:35 UTCJul 19, 14:55 UTC20m
2026-07-19 CGI120F - Jul 19, 12:25 UTCJul 19, 13:00 UTC35m
2026-07-19 CGI120F - Jul 19, 10:05 UTCJul 19, 10:50 UTC45m
2026-07-18 EIIRW - Jul 18, 22:30 UTCJul 18, 23:40 UTC1h 10m
2026-07-16 CGI120F - Jul 16, 17:10 UTCJul 16, 18:15 UTC1h 5m
2026-07-16 EIIRW - Jul 16, 13:49 UTCJul 16, 14:20 UTC30m
2026-07-16 EIIRW - Jul 16, 09:25 UTCJul 16, 11:20 UTC1h 55m
2026-07-15 EIIRW - Jul 15, 13:05 UTCJul 15, 13:45 UTC40m
2026-07-15 EIIRW - Jul 15, 11:35 UTCJul 15, 11:55 UTC20m
2026-07-15 EIIRW - Jul 15, 10:20 UTCJul 15, 10:45 UTC25m
2026-07-15 CGI120F - Jul 15, 03:45 UTCJul 15, 04:40 UTC55m
2026-07-10 CGI120F - Jul 10, 14:15 UTCJul 10, 14:35 UTC20m
2026-07-10 CGI120F - Jul 10, 11:40 UTCJul 10, 13:00 UTC1h 20m
2026-07-07 CGI120F - Jul 7, 16:25 UTCJul 7, 16:45 UTC20m
2026-07-07 CGI120F - Jul 7, 14:50 UTCJul 7, 15:10 UTC20m
2026-07-07 EIIRW - Jul 7, 12:25 UTCJul 7, 14:15 UTC1h 50m
2026-07-06 CGI120F - Jul 6, 16:50 UTCJul 6, 17:30 UTC40m
2026-07-06 CGI120F - Jul 6, 14:55 UTCJul 6, 15:35 UTC40m
2026-07-06 EIIRW - Jul 6, 11:35 UTCJul 6, 12:00 UTC25m
2026-07-06 EIIRW - Jul 6, 09:20 UTCJul 6, 10:00 UTC40m
2026-07-05 EIIRW - Jul 5, 12:50 UTCJul 5, 13:20 UTC30m
2026-07-05 EIIRW - Jul 5, 10:35 UTCJul 5, 11:10 UTC35m
2026-07-03 EIIRW - Jul 3, 14:20 UTCJul 3, 16:10 UTC1h 50m
2026-07-01 EIIRW - Jul 1, 15:25 UTCJul 1, 16:00 UTC35m
2026-07-01 EIIRW - Jul 1, 12:20 UTCJul 1, 13:25 UTC1h 5m
2026-06-22 CGI120F - Jun 22, 11:30 UTCJun 22, 12:30 UTC1h 0m
2026-06-22 CGI120F - Jun 22, 09:14 UTCJun 22, 09:54 UTC40m
2026-06-20 CGI120F - Jun 20, 14:29 UTCJun 20, 15:29 UTC1h 0m
2026-06-20 CGI120F - Jun 20, 11:40 UTCJun 20, 12:14 UTC35m
2026-06-20 CGI120F - Jun 20, 08:49 UTCJun 20, 09:44 UTC55m
2026-06-19 CGI120F - Jun 19, 21:30 UTCJun 19, 21:59 UTC30m
2026-06-19 CGI120F - Jun 19, 20:29 UTCJun 19, 20:55 UTC25m
2026-06-18 CGI120F - Jun 18, 15:50 UTCJun 18, 17:10 UTC1h 20m
2026-06-17 CG120F - Jun 17, 17:45 UTCJun 17, 18:05 UTC20m
2026-06-17 CG120F - Jun 17, 16:55 UTCJun 17, 17:15 UTC20m
2026-06-17 CG120F - Jun 17, 15:30 UTCJun 17, 16:15 UTC45m
2026-06-16 CG120F - Jun 16, 12:10 UTCJun 16, 12:45 UTC35m
2026-06-16 CG120F - Jun 16, 10:45 UTCJun 16, 11:10 UTC25m
2026-06-15 EIIRW - Jun 15, 14:34 UTCJun 15, 16:19 UTC1h 45m
2026-06-13 EIIRW - Jun 13, 21:25 UTCJun 13, 22:10 UTC45m
2026-06-13 EIIRW - Jun 13, 09:35 UTCJun 13, 11:50 UTC2h 15m
2026-06-12 EIIRW - Jun 12, 21:50 UTCJun 12, 23:00 UTC1h 10m
2026-06-12 EIIRW - Jun 12, 13:55 UTCJun 12, 15:45 UTC1h 50m
2026-06-10 EIIRW - Jun 10, 14:15 UTCJun 10, 16:25 UTC2h 10m
2026-06-09 EIIRW - Jun 9, 14:50 UTCJun 9, 15:15 UTC25m
2026-06-09 EIIRW - Jun 9, 12:55 UTCJun 9, 14:10 UTC1h 15m
2026-06-08 EIIRW - Jun 8, 14:55 UTCJun 8, 15:20 UTC25m
2026-06-08 CGI120F - Jun 8, 11:40 UTCJun 8, 13:30 UTC1h 50m
2026-06-06 CGI120F - Jun 6, 14:00 UTCJun 6, 16:04 UTC2h 5m
2026-06-05 EIIRW - Jun 5, 12:55 UTCJun 5, 13:15 UTC20m

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

Mode-S 4CAECE frequently asked

What is Mode-S code 4CAECE?
4CAECE is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IRW.
Where is Mode-S 4CAECE registered?
Mode-S code 4CAECE is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAECE broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAECE, octal 23127316, decimal 5,025,486.
What flights does 4CAECE operate?
Mode-S 4CAECE has broadcast 4 distinct callsigns, including EIIRW, CGI120F, CG120F, CGI120W.