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sensors Mode-S transponder

4CAD5D

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HHU · AIRBUS A220-300

Hex
4CAD5D
Octal
23126535
Decimal
5,025,117
Country
IE
Tail
EI-HHU
Type
BCS3
No current signal · last broadcast 3h ago
Flights observed
615
Distinct callsigns
20
Country
IE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4CAD5D.

Country allocation

The ICAO 24-bit address 4CAD5D 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
ITY720 - 10 2026-07-05
ITY719 - 9 2026-07-05
ITY076 ITA Airways 7 2026-06-26
ITY7CI ITA Airways 6 2026-06-09
ITY1788 ITA Airways 6 2026-06-16
ITY1785 - 6 2026-06-20
ITY1784 - 6 2026-06-20
ITY1779 ITA Airways 6 2026-06-16
ITY1739 - 6 2026-07-09
ITY1722 - 6 2026-06-27
ITY1616 ITA Airways 6 2026-06-18
ITY1613 ITA Airways 6 2026-06-18
ITY1603 - 6 2026-07-05
ITY1358 - 6 2026-06-30
ITY1357 - 6 2026-06-30
ITY1170 ITA Airways 6 2026-06-09
ITY6BO - 5 2026-07-06
ITY578 - 5 2026-07-01
ITY577 ITA Airways 5 2026-07-01
ITY2130 ITA Airways 5 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ITY2059 - Jul 14, 15:30 UTCJul 14, 16:20 UTC50m
2026-07-14 ITY1718 - Jul 14, 10:45 UTCJul 14, 12:25 UTC1h 40m
2026-07-14 ITY1727 - Jul 14, 06:55 UTCJul 14, 08:15 UTC1h 20m
2026-07-14 ITY1768 PMO → LIN Jul 14, 04:30 UTCJul 14, 05:50 UTC1h 20m
2026-07-13 ITY1IP - Jul 13, 20:00 UTCJul 13, 21:05 UTC1h 5m
2026-07-13 ITY1720 - Jul 13, 17:10 UTCJul 13, 18:40 UTC1h 30m
2026-07-13 ITY1721 - Jul 13, 14:15 UTCJul 13, 15:35 UTC1h 20m
2026-07-13 ITY1747 - Jul 13, 09:30 UTCJul 13, 11:05 UTC1h 35m
2026-07-13 ITY1746 - Jul 13, 06:40 UTCJul 13, 07:55 UTC1h 15m
2026-07-13 ITY2014 - Jul 13, 04:35 UTCJul 13, 05:20 UTC45m
2026-07-12 ITY091 - Jul 12, 12:01 UTCJul 12, 13:55 UTC1h 55m
2026-07-12 ITY090 - Jul 12, 07:45 UTCJul 12, 10:10 UTC2h 25m
2026-07-12 ITY2013 - Jul 12, 05:25 UTCJul 12, 06:10 UTC45m
2026-07-11 ITY1650 - Jul 11, 19:25 UTCJul 11, 20:40 UTC1h 15m
2026-07-11 ITY1639 - Jul 11, 17:10 UTCJul 11, 18:20 UTC1h 10m
2026-07-11 ITY1672 - Jul 11, 14:25 UTCJul 11, 15:35 UTC1h 10m
2026-07-11 ITY1671 - Jul 11, 12:10 UTCJul 11, 13:20 UTC1h 10m
2026-07-11 ITY351 ORY → LIN Jul 11, 09:20 UTCJul 11, 10:25 UTC1h 5m
2026-07-11 ITY350 - Jul 11, 06:50 UTCJul 11, 07:55 UTC1h 5m
2026-07-11 ITY1278 - Jul 11, 04:35 UTCJul 11, 05:31 UTC55m
2026-07-10 ITY1297 - Jul 10, 19:40 UTCJul 10, 20:35 UTC55m
2026-07-10 ITY1632 BRI → LIN Jul 10, 17:25 UTCJul 10, 18:35 UTC1h 10m
2026-07-10 ITY1647 LIN → BRI Jul 10, 15:00 UTCJul 10, 16:15 UTC1h 15m
2026-07-10 ITY067 IBZ → LIN Jul 10, 12:15 UTCJul 10, 13:45 UTC1h 30m
2026-07-10 ITY066 LIN → IBZ Jul 10, 09:35 UTCJul 10, 11:10 UTC1h 35m
2026-07-10 ITY1286 - Jul 10, 06:40 UTCJul 10, 07:35 UTC55m
2026-07-10 ITY1285 - Jul 10, 04:30 UTCJul 10, 05:25 UTC55m
2026-07-09 ITY1298 - Jul 9, 19:45 UTCJul 9, 20:45 UTC1h 0m
2026-07-09 ITY1291 - Jul 9, 17:35 UTCJul 9, 18:25 UTC50m
2026-07-09 ITY2092 - Jul 9, 15:30 UTCJul 9, 16:20 UTC50m
2026-07-09 ITY1730 CTA → FCO Jul 9, 13:10 UTCJul 9, 14:10 UTC1h 0m
2026-07-09 ITY1739 - Jul 9, 11:00 UTCJul 9, 11:50 UTC50m
2026-07-09 ITY1710 - Jul 9, 08:30 UTCJul 9, 09:30 UTC1h 0m
2026-07-09 ITY1709 - Jul 9, 06:35 UTCJul 9, 07:20 UTC45m
2026-07-09 ITY1460 VCE → FCO Jul 9, 04:15 UTCJul 9, 05:00 UTC45m
2026-07-08 ITY1473 - Jul 8, 20:35 UTCJul 8, 21:20 UTC45m
2026-07-08 ITY433 MUC → FCO Jul 8, 18:00 UTCJul 8, 19:00 UTC1h 0m
2026-07-08 ITY436 - Jul 8, 15:35 UTCJul 8, 16:50 UTC1h 15m
2026-07-08 ITY1730 CTA → FCO Jul 8, 13:05 UTCJul 8, 14:10 UTC1h 5m
2026-07-08 ITY1739 - Jul 8, 10:55 UTCJul 8, 11:45 UTC50m
2026-07-08 ITY1782 - Jul 8, 08:45 UTCJul 8, 09:25 UTC40m
2026-07-08 ITY1777 - Jul 8, 06:50 UTCJul 8, 07:30 UTC40m
2026-07-07 ITY885 - Jul 7, 17:50 UTCJul 7, 19:00 UTC1h 10m
2026-07-07 ITY884 FCO → MLA Jul 7, 15:45 UTCJul 7, 16:55 UTC1h 10m
2026-07-07 ITY1270 - Jul 7, 13:50 UTCJul 7, 14:15 UTC25m
2026-07-07 ITY1269 - Jul 7, 11:40 UTCJul 7, 12:15 UTC35m
2026-07-06 ITY8004 - Jul 6, 21:30 UTCJul 6, 23:25 UTC1h 55m
2026-07-06 ITY156 - Jul 6, 06:55 UTCJul 6, 08:50 UTC1h 55m
2026-07-06 ITY6BO - Jul 6, 04:40 UTCJul 6, 05:25 UTC45m
2026-07-05 ITY1603 - Jul 5, 21:15 UTCJul 5, 22:05 UTC50m

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

Mode-S 4CAD5D frequently asked

What is Mode-S code 4CAD5D?
4CAD5D is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HHU.
Where is Mode-S 4CAD5D registered?
Mode-S code 4CAD5D is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD5D broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD5D, octal 23126535, decimal 5,025,117.
What flights does 4CAD5D operate?
Mode-S 4CAD5D has broadcast 20 distinct callsigns, including ITY720, ITY719, ITY076, ITY7CI, ITY1788.