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sensors Mode-S transponder

4CAD5A

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HHR · AIRBUS A220-300

Hex
4CAD5A
Octal
23126532
Decimal
5,025,114
Country
IE
Tail
EI-HHR
Type
BCS3
No current signal · last broadcast 13d ago
Flights observed
162
Distinct callsigns
20
Country
IE
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S 4CAD5A.

Country allocation

The ICAO 24-bit address 4CAD5A 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
ITY1314 ITA Airways 4 2026-07-24
ITY1311 ITA Airways 4 2026-07-24
ITY578 - 3 2026-07-19
ITY577 - 3 2026-07-19
ITY1IP ITA Airways 3 2026-07-21
ITY151 - 3 2026-07-16
ITY148 - 3 2026-07-16
ITY9927 ITA Airways 2 2026-07-18
ITY9926 ITA Airways 2 2026-07-18
ITY9925 - 2 2026-07-22
ITY9924 - 2 2026-07-22
ITY9002 ITA Airways 2 2026-07-22
ITY348 ITA Airways 2 2026-07-21
ITY2133 - 2 2026-07-16
ITY1770 ITA Airways 2 2026-07-25
ITY1768 - 2 2026-07-10
ITY1739 - 2 2026-07-17
ITY1734 - 2 2026-07-22
ITY1730 - 2 2026-07-17
ITY1729 ITA Airways 2 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ITY356 LIN → ORY Jul 26, 19:50 UTCJul 26, 21:05 UTC1h 15m
2026-07-26 ITY723 CFU → LIN Jul 26, 16:30 UTCJul 26, 18:10 UTC1h 40m
2026-07-26 ITY724 - Jul 26, 13:05 UTCJul 26, 14:25 UTC1h 20m
2026-07-26 ITY1704 CTA → LIN Jul 26, 10:20 UTCJul 26, 11:45 UTC1h 25m
2026-07-26 ITY1723 LIN → CTA Jul 26, 07:40 UTCJul 26, 09:10 UTC1h 30m
2026-07-26 ITY1742 CTA → LIN Jul 26, 04:55 UTCJul 26, 06:25 UTC1h 30m
2026-07-25 ITY1729 FCO → CTA Jul 25, 20:20 UTCJul 25, 21:05 UTC45m
2026-07-25 ITY325 - Jul 25, 17:20 UTCJul 25, 18:50 UTC1h 30m
2026-07-25 ITY324 - Jul 25, 14:15 UTCJul 25, 15:55 UTC1h 40m
2026-07-25 ITY1710 - Jul 25, 11:40 UTCJul 25, 12:40 UTC1h 0m
2026-07-25 ITY1709 FCO → CTA Jul 25, 09:10 UTCJul 25, 09:55 UTC45m
2026-07-25 ITY1770 PMO → FCO Jul 25, 06:00 UTCJul 25, 06:45 UTC45m
2026-07-24 ITY1783 FCO → PMO Jul 24, 21:10 UTCJul 24, 21:40 UTC30m
2026-07-24 ITY1170 - Jul 24, 18:45 UTCJul 24, 19:30 UTC45m
2026-07-24 ITY7CI - Jul 24, 17:05 UTCJul 24, 17:45 UTC40m
2026-07-24 ITY1792 - Jul 24, 14:45 UTCJul 24, 15:35 UTC50m
2026-07-24 ITY1781 - Jul 24, 12:45 UTCJul 24, 13:30 UTC45m
2026-07-24 ITY1314 BLQ → FCO Jul 24, 10:15 UTCJul 24, 10:45 UTC30m
2026-07-24 ITY1311 FCO → BLQ Jul 24, 08:30 UTCJul 24, 09:15 UTC45m
2026-07-24 ITY1356 TRS → FCO Jul 24, 04:40 UTCJul 24, 05:25 UTC45m
2026-07-23 ITY1363 FCO → TRS Jul 23, 20:30 UTCJul 23, 21:50 UTC1h 20m
2026-07-23 ITY737 HER → FCO Jul 23, 14:50 UTCJul 23, 16:50 UTC2h 0m
2026-07-23 ITY736 FCO → HER Jul 23, 11:50 UTCJul 23, 13:30 UTC1h 40m
2026-07-23 ITY1264 NAP → FCO Jul 23, 09:40 UTCJul 23, 10:05 UTC25m
2026-07-23 ITY1263 FCO → NAP Jul 23, 08:05 UTCJul 23, 08:30 UTC25m
2026-07-22 ITY9925 BUD → FCO Jul 22, 17:00 UTCJul 22, 18:20 UTC1h 20m
2026-07-22 ITY9002 BLQ → ZXT Jul 22, 15:05 UTCJul 22, 16:10 UTC1h 5m
2026-07-22 ITY9924 - Jul 22, 13:35 UTCJul 22, 14:10 UTC35m
2026-07-22 ITY1734 - Jul 22, 11:40 UTCJul 22, 12:25 UTC45m
2026-07-21 ITY1IP LIN → PMO Jul 21, 20:15 UTCJul 21, 21:25 UTC1h 10m
2026-07-21 ITY1720 - Jul 21, 17:25 UTCJul 21, 18:55 UTC1h 30m
2026-07-21 ITY1721 LIN → CTA Jul 21, 14:50 UTCJul 21, 16:10 UTC1h 20m
2026-07-21 ITY2044 - Jul 21, 12:35 UTCJul 21, 13:25 UTC50m
2026-07-21 ITY343 - Jul 21, 10:10 UTCJul 21, 10:55 UTC45m
2026-07-21 ITY348 FCO → NCE Jul 21, 09:15 UTCJul 21, 09:40 UTC25m
2026-07-21 ITY348 FCO → NCE Jul 21, 08:15 UTCJul 21, 09:10 UTC55m
2026-07-21 ITY6BO BRI → FCO Jul 21, 04:35 UTCJul 21, 05:25 UTC50m
2026-07-20 ITY1603 - Jul 20, 20:45 UTCJul 20, 21:35 UTC50m
2026-07-20 ITY355 - Jul 20, 18:45 UTCJul 20, 19:30 UTC45m
2026-07-20 ITY354 - Jul 20, 16:40 UTCJul 20, 17:30 UTC50m
2026-07-20 ITY749 - Jul 20, 13:40 UTCJul 20, 15:15 UTC1h 35m
2026-07-20 ITY748 - Jul 20, 11:10 UTCJul 20, 12:25 UTC1h 15m
2026-07-20 ITY1710 - Jul 20, 08:40 UTCJul 20, 09:40 UTC1h 0m
2026-07-20 ITY1709 FCO → CTA Jul 20, 06:30 UTCJul 20, 07:25 UTC55m
2026-07-20 ITY1620 - Jul 20, 04:20 UTCJul 20, 05:15 UTC55m
2026-07-19 ITY1625 - Jul 19, 21:20 UTCJul 19, 22:05 UTC45m
2026-07-19 ITY577 - Jul 19, 17:35 UTCJul 19, 18:35 UTC1h 0m
2026-07-19 ITY578 - Jul 19, 15:10 UTCJul 19, 16:30 UTC1h 20m
2026-07-18 ITY9927 TRN → FCO Jul 18, 19:15 UTCJul 18, 20:00 UTC45m
2026-07-18 ITY9015 NAP → TRN Jul 18, 18:05 UTCJul 18, 18:45 UTC40m

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

Mode-S 4CAD5A frequently asked

What is Mode-S code 4CAD5A?
4CAD5A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HHR.
Where is Mode-S 4CAD5A registered?
Mode-S code 4CAD5A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD5A broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD5A, octal 23126532, decimal 5,025,114.
What flights does 4CAD5A operate?
Mode-S 4CAD5A has broadcast 20 distinct callsigns, including ITY1314, ITY1311, ITY578, ITY577, ITY1IP.