sensors Mode-S transponder

4CAD52

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HHI · AIRBUS A220-300

Hex
4CAD52
Octal
23126522
Decimal
5,025,106
Country
IE
Tail
EI-HHI
Type
BCS3
No current signal · last broadcast 16h ago
Flights observed
13
Distinct callsigns
12
Country
IE
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4CAD52.

Country allocation

The ICAO 24-bit address 4CAD52 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 12 distinct

Callsign Airline Flights Last seen
ITY1383 ITA Airways 2 2026-04-13
ITY7CI - 1 2026-04-13
ITY1BC - 1 2026-04-12
ITY1460 - 1 2026-04-13
ITY1428 - 1 2026-04-13
ITY1417 - 1 2026-04-13
ITY1384 - 1 2026-04-13
ITY1363 - 1 2026-04-13
ITY1358 - 1 2026-04-14
ITY1357 ITA Airways 1 2026-04-14
ITY1356 - 1 2026-04-14
ITY1170 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 ITY1358 - Apr 14, 09:15 UTCApr 14, 10:05 UTC50m
2026-04-14 ITY1357 FCO → TRS Apr 14, 07:40 UTCApr 14, 08:25 UTC45m
2026-04-14 ITY1356 - Apr 14, 05:15 UTCApr 14, 05:45 UTC30m
2026-04-13 ITY1363 - Apr 13, 20:20 UTCApr 13, 21:05 UTC45m
2026-04-13 ITY1170 - Apr 13, 18:15 UTCApr 13, 19:05 UTC50m
2026-04-13 ITY7CI - Apr 13, 16:35 UTCApr 13, 17:20 UTC45m
2026-04-13 ITY1428 - Apr 13, 14:25 UTCApr 13, 15:15 UTC50m
2026-04-13 ITY1417 - Apr 13, 12:30 UTCApr 13, 13:20 UTC50m
2026-04-13 ITY1384 - Apr 13, 10:15 UTCApr 13, 11:05 UTC50m
2026-04-13 ITY1383 FCO → GOA Apr 13, 08:20 UTCApr 13, 09:10 UTC50m
2026-04-13 ITY1383 FCO → GOA Apr 13, 08:10 UTCApr 13, 09:10 UTC1h 0m
2026-04-13 ITY1460 - Apr 13, 04:20 UTCApr 13, 05:10 UTC50m
2026-04-12 ITY1BC - Apr 12, 17:40 UTCApr 12, 18:40 UTC1h 0m

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

Mode-S 4CAD52 frequently asked

What is Mode-S code 4CAD52?
4CAD52 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HHI.
Where is Mode-S 4CAD52 registered?
Mode-S code 4CAD52 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD52 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD52, octal 23126522, decimal 5,025,106.
What flights does 4CAD52 operate?
Mode-S 4CAD52 has broadcast 12 distinct callsigns, including ITY1383, ITY7CI, ITY1BC, ITY1460, ITY1428.