Apparatus

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sensors Mode-S transponder

4CAEF5

ICAO 24-bit transponder address · allocated to Ireland

Hex
4CAEF5
Octal
23127365
Decimal
5,025,525
Country
IE
No current signal · last broadcast 6h ago
Flights observed
80
Distinct callsigns
1
Country
IE
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 4CAEF5.

Country allocation

The ICAO 24-bit address 4CAEF5 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 1 distinct

Callsign Airline Flights Last seen
EIHOW - 80 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 EIHOW - Jul 18, 15:45 UTCJul 18, 16:00 UTC15m
2026-07-18 EIHOW - Jul 18, 14:45 UTCJul 18, 15:00 UTC15m
2026-07-18 EIHOW - Jul 18, 13:35 UTCJul 18, 13:50 UTC15m
2026-07-18 EIHOW - Jul 18, 12:25 UTCJul 18, 12:45 UTC20m
2026-07-18 EIHOW - Jul 18, 10:45 UTCJul 18, 11:00 UTC15m
2026-07-18 EIHOW - Jul 18, 09:25 UTCJul 18, 09:50 UTC25m
2026-07-16 EIHOW - Jul 16, 19:14 UTCJul 16, 20:00 UTC45m
2026-07-16 EIHOW - Jul 16, 15:35 UTCJul 16, 16:25 UTC50m
2026-07-14 EIHOW - Jul 14, 12:50 UTCJul 14, 13:05 UTC15m
2026-07-12 EIHOW - Jul 12, 14:30 UTCJul 12, 14:40 UTC10m
2026-07-12 EIHOW - Jul 12, 13:35 UTCJul 12, 13:45 UTC10m
2026-07-12 EIHOW - Jul 12, 12:15 UTCJul 12, 12:30 UTC15m
2026-07-12 EIHOW - Jul 12, 09:35 UTCJul 12, 09:55 UTC20m
2026-07-11 EIHOW - Jul 11, 15:15 UTCJul 11, 15:25 UTC10m
2026-07-11 EIHOW - Jul 11, 13:40 UTCJul 11, 13:55 UTC15m
2026-07-11 EIHOW - Jul 11, 11:00 UTCJul 11, 11:20 UTC20m
2026-07-07 EIHOW - Jul 7, 18:40 UTCJul 7, 19:10 UTC30m
2026-07-07 EIHOW - Jul 7, 17:20 UTCJul 7, 17:45 UTC25m
2026-07-05 EIHOW - Jul 5, 15:35 UTCJul 5, 15:50 UTC15m
2026-07-05 EIHOW - Jul 5, 14:40 UTCJul 5, 14:55 UTC15m
2026-07-05 EIHOW - Jul 5, 13:25 UTCJul 5, 13:40 UTC15m
2026-07-05 EIHOW - Jul 5, 11:10 UTCJul 5, 11:45 UTC35m
2026-07-05 EIHOW - Jul 5, 10:05 UTCJul 5, 10:25 UTC20m
2026-07-03 EIHOW - Jul 3, 16:45 UTCJul 3, 17:15 UTC30m
2026-07-02 EIHOW - Jul 2, 10:45 UTCJul 2, 11:10 UTC25m
2026-06-28 EIHOW - Jun 28, 09:34 UTCJun 28, 09:55 UTC20m
2026-06-24 EIHOW - Jun 24, 16:14 UTCJun 24, 16:40 UTC25m
2026-06-21 EIHOW - Jun 21, 13:50 UTCJun 21, 14:10 UTC20m
2026-06-21 EIHOW - Jun 21, 12:49 UTCJun 21, 13:04 UTC15m
2026-06-21 EIHOW - Jun 21, 11:59 UTCJun 21, 12:10 UTC10m
2026-06-21 EIHOW - Jun 21, 10:49 UTCJun 21, 11:05 UTC15m
2026-06-20 EIHOW - Jun 20, 15:19 UTCJun 20, 15:44 UTC25m
2026-06-20 EIHOW - Jun 20, 12:34 UTCJun 20, 13:04 UTC30m
2026-06-20 EIHOW - Jun 20, 11:30 UTCJun 20, 11:49 UTC20m
2026-06-20 EIHOW - Jun 20, 10:34 UTCJun 20, 10:44 UTC10m
2026-06-14 EIHOW - Jun 14, 12:40 UTCJun 14, 13:05 UTC25m
2026-06-14 EIHOW - Jun 14, 11:30 UTCJun 14, 12:00 UTC30m
2026-06-14 EIHOW - Jun 14, 09:50 UTCJun 14, 10:30 UTC40m
2026-06-13 EIHOW - Jun 13, 15:15 UTCJun 13, 15:45 UTC30m
2026-06-13 EIHOW - Jun 13, 13:50 UTCJun 13, 14:10 UTC20m
2026-06-13 EIHOW - Jun 13, 12:25 UTCJun 13, 12:45 UTC20m
2026-06-13 EIHOW - Jun 13, 11:00 UTCJun 13, 11:20 UTC20m
2026-06-13 EIHOW - Jun 13, 09:20 UTCJun 13, 09:45 UTC25m
2026-05-31 EIHOW - May 31, 13:15 UTCMay 31, 13:35 UTC20m
2026-05-31 EIHOW - May 31, 10:55 UTCMay 31, 11:10 UTC15m
2026-05-30 EIHOW - May 30, 11:55 UTCMay 30, 12:05 UTC10m
2026-05-30 EIHOW - May 30, 10:45 UTCMay 30, 11:05 UTC20m
2026-05-24 EIHOW - May 24, 16:05 UTCMay 24, 17:10 UTC1h 5m
2026-05-24 EIHOW - May 24, 14:35 UTCMay 24, 14:50 UTC15m
2026-05-24 EIHOW - May 24, 10:20 UTCMay 24, 12:10 UTC1h 50m

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.

Mode-S 4CAEF5 frequently asked

What is Mode-S code 4CAEF5?
4CAEF5 is an ICAO 24-bit transponder address. Allocated to Ireland.
Where is Mode-S 4CAEF5 registered?
Mode-S code 4CAEF5 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEF5 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEF5, octal 23127365, decimal 5,025,525.
What flights does 4CAEF5 operate?
Mode-S 4CAEF5 has broadcast 1 distinct callsign, including EIHOW.