sensors Mode-S transponder

4CAE35

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-XLX · AIRBUS A-321neo

Hex
4CAE35
Octal
23127065
Decimal
5,025,333
Country
IE
Tail
EI-XLX
Type
A21N
No current signal · last broadcast 19h ago
Flights observed
9
Distinct callsigns
7
Country
IE
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 4CAE35.

Country allocation

The ICAO 24-bit address 4CAE35 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
EIN9AR - 2 2026-04-13
EIN1PR Aer Lingus 2 2026-04-13
EIN9LT - 1 2026-04-14
EIN52X - 1 2026-04-13
EIN52A Aer Lingus 1 2026-04-13
EIN204 Aer Lingus 1 2026-04-14
EIN13X - 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 EIN204 DUB → MAN Apr 14, 09:10 UTCApr 14, 09:40 UTC30m
2026-04-14 EIN9LT - Apr 14, 06:05 UTCApr 14, 06:50 UTC45m
2026-04-13 EIN9AR - Apr 13, 20:05 UTCApr 13, 22:40 UTC2h 35m
2026-04-13 EIN9AR - Apr 13, 15:05 UTCApr 13, 15:55 UTC50m
2026-04-13 EIN52X - Apr 13, 09:00 UTCApr 13, 10:20 UTC1h 20m
2026-04-13 EIN52A DUB → CDG Apr 13, 06:15 UTCApr 13, 07:35 UTC1h 20m
2026-04-13 EIN1PR BDL → DUB Apr 13, 03:10 UTCApr 13, 03:55 UTC45m
2026-04-12 EIN1PR BDL → DUB Apr 12, 23:55 UTCApr 13, 03:50 UTC3h 55m
2026-04-12 EIN13X - Apr 12, 18:55 UTCApr 12, 20:15 UTC1h 20m

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

Mode-S 4CAE35 frequently asked

What is Mode-S code 4CAE35?
4CAE35 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-XLX.
Where is Mode-S 4CAE35 registered?
Mode-S code 4CAE35 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE35 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE35, octal 23127065, decimal 5,025,333.
What flights does 4CAE35 operate?
Mode-S 4CAE35 has broadcast 7 distinct callsigns, including EIN9AR, EIN1PR, EIN9LT, EIN52X, EIN52A.