sensors Mode-S transponder

4CABD2

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CABD2
Octal
23125722
Decimal
5,024,722
Country
IE
Tail
EI-LRF
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
7
Distinct callsigns
4
Country
IE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4CABD2.

Country allocation

The ICAO 24-bit address 4CABD2 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 4 distinct

Callsign Airline Flights Last seen
EIN13X - 3 2026-04-13
EIN106 - 2 2026-04-13
EIN524 Aer Lingus 1 2026-04-14
EIN1PR Aer Lingus 1 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 EIN524 DUB → CDG Apr 14, 09:00 UTCApr 14, 09:05 UTC5m
2026-04-13 EIN1PR BDL → DUB Apr 13, 22:10 UTCApr 13, 23:35 UTC1h 25m
2026-04-13 EIN13X - Apr 13, 19:50 UTCApr 13, 20:00 UTC10m
2026-04-13 EIN13X - Apr 13, 18:20 UTCApr 13, 20:00 UTC1h 40m
2026-04-13 EIN13X - Apr 13, 13:10 UTCApr 13, 14:00 UTC50m
2026-04-13 EIN106 - Apr 13, 06:40 UTCApr 13, 07:25 UTC45m
2026-04-13 EIN106 - Apr 13, 01:40 UTCApr 13, 03:20 UTC1h 40m

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

Mode-S 4CABD2 frequently asked

What is Mode-S code 4CABD2?
4CABD2 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-LRF.
Where is Mode-S 4CABD2 registered?
Mode-S code 4CABD2 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CABD2 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CABD2, octal 23125722, decimal 5,024,722.
What flights does 4CABD2 operate?
Mode-S 4CABD2 has broadcast 4 distinct callsigns, including EIN13X, EIN106, EIN524, EIN1PR.