sensors Mode-S transponder

4CADE9

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HOI · AIRBUS A-320neo

Hex
4CADE9
Octal
23126751
Decimal
5,025,257
Country
IE
Tail
EI-HOI
Type
A20N
No current signal · last broadcast 13h ago
Flights observed
11
Distinct callsigns
7
Country
IE
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4CADE9.

Country allocation

The ICAO 24-bit address 4CADE9 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 7 distinct

Callsign Airline Flights Last seen
ITY1710 - 2 2026-04-14
ITY1709 - 2 2026-04-14
ITY1359 - 2 2026-04-13
ITY1157 - 2 2026-04-13
ITY1735 ITA Airways 1 2026-04-13
ITY1364 - 1 2026-04-13
ITY1156 - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 ITY1710 - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 ITY1710 - Apr 14, 08:40 UTCApr 14, 09:05 UTC25m
2026-04-14 ITY1709 - Apr 14, 07:10 UTCApr 14, 07:25 UTC15m
2026-04-14 ITY1709 - Apr 14, 06:35 UTCApr 14, 07:10 UTC35m
2026-04-13 ITY1735 FCO → CTA Apr 13, 20:45 UTCApr 13, 21:30 UTC45m
2026-04-13 ITY1364 - Apr 13, 17:25 UTCApr 13, 18:20 UTC55m
2026-04-13 ITY1359 - Apr 13, 16:15 UTCApr 13, 16:35 UTC20m
2026-04-13 ITY1359 - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 ITY1156 - Apr 13, 13:40 UTCApr 13, 14:35 UTC55m
2026-04-13 ITY1157 - Apr 13, 12:20 UTCApr 13, 12:50 UTC30m
2026-04-13 ITY1157 - Apr 13, 12:00 UTCApr 13, 12:15 UTC15m

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

Mode-S 4CADE9 frequently asked

What is Mode-S code 4CADE9?
4CADE9 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HOI.
Where is Mode-S 4CADE9 registered?
Mode-S code 4CADE9 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADE9 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADE9, octal 23126751, decimal 5,025,257.
What flights does 4CADE9 operate?
Mode-S 4CADE9 has broadcast 7 distinct callsigns, including ITY1710, ITY1709, ITY1359, ITY1157, ITY1735.