Apparatus

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sensors Mode-S transponder

4CABD1

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CABD1
Octal
23125721
Decimal
5,024,721
Country
IE
Tail
EI-LRE
Type
A21N
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
374
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 4CABD1.

Country allocation

The ICAO 24-bit address 4CABD1 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
EIN1AC Aer Lingus 26 2026-06-16
EIN1YL - 23 2026-06-16
EIN1EA Aer Lingus 23 2026-05-14
EIN38A - 22 2026-06-16
EIN1LH Aer Lingus 21 2026-05-14
EIN381 - 20 2026-06-16
EIN1XG Aer Lingus 14 2026-07-25
EIN10M - 13 2026-07-18
EIN52X Aer Lingus 12 2026-07-19
EIN1XL Aer Lingus 12 2026-07-24
EIN1TC - 12 2026-07-18
EIN52A Aer Lingus 11 2026-07-19
EIN13X - 10 2026-07-19
EIN109 - 10 2026-07-13
EIN1PR Aer Lingus 9 2026-07-20
EIN108 - 8 2026-07-14
EIN525 - 7 2026-07-24
EIN524 - 7 2026-07-24
EIN9HR Aer Lingus 6 2026-05-17
EIN9EG Aer Lingus 5 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EIN11P IAD → DUB Jul 26, 22:05 UTCJul 26, 22:15 UTC10m
2026-07-26 EIN11T DUB → IAD Jul 26, 11:50 UTCJul 26, 19:15 UTC7h 25m
2026-07-26 EIN118 IAD → DUB Jul 26, 00:30 UTCJul 26, 06:50 UTC6h 21m
2026-07-25 EIN119 DUB → IAD Jul 25, 15:30 UTCJul 25, 22:25 UTC6h 55m
2026-07-25 EIN205 MAN → DUB Jul 25, 11:00 UTCJul 25, 11:35 UTC35m
2026-07-25 EIN204 DUB → MAN Jul 25, 09:10 UTCJul 25, 09:45 UTC35m
2026-07-25 EIN1XG PHL → DUB Jul 25, 00:50 UTCJul 25, 06:35 UTC5h 45m
2026-07-24 EIN1XL DUB → PHL Jul 24, 15:30 UTCJul 24, 22:20 UTC6h 50m
2026-07-24 EIN525 - Jul 24, 11:35 UTCJul 24, 12:50 UTC1h 15m
2026-07-24 EIN524 - Jul 24, 09:15 UTCJul 24, 10:30 UTC1h 15m
2026-07-23 EIN11P IAD → DUB Jul 23, 21:55 UTCJul 24, 03:55 UTC6h 0m
2026-07-23 EIN11T DUB → IAD Jul 23, 12:45 UTCJul 23, 20:00 UTC7h 15m
2026-07-23 EIN9EG PIT → DUB Jul 23, 00:45 UTCJul 23, 07:15 UTC6h 30m
2026-07-22 EIN9AF - Jul 22, 15:00 UTCJul 22, 22:20 UTC7h 20m
2026-07-22 EIN525 - Jul 22, 11:45 UTCJul 22, 13:00 UTC1h 15m
2026-07-22 EIN524 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 EIN1XG PHL → DUB Jul 22, 01:15 UTCJul 22, 03:15 UTC2h 0m
2026-07-21 EIN1XL DUB → PHL Jul 21, 15:40 UTCJul 21, 22:50 UTC7h 10m
2026-07-21 EIN525 - Jul 21, 11:20 UTCJul 21, 12:40 UTC1h 20m
2026-07-21 EIN524 - Jul 21, 09:00 UTCJul 21, 10:10 UTC1h 10m
2026-07-21 EIN9EG - Jul 21, 01:00 UTCJul 21, 07:15 UTC6h 15m
2026-07-20 EIN9AF - Jul 20, 16:10 UTCJul 20, 23:15 UTC7h 5m
2026-07-20 EIN1PR BDL → DUB Jul 20, 00:15 UTCJul 20, 06:45 UTC6h 30m
2026-07-19 EIN13X - Jul 19, 14:30 UTCJul 19, 22:00 UTC7h 30m
2026-07-19 EIN52X CDG → DUB Jul 19, 08:35 UTCJul 19, 10:00 UTC1h 25m
2026-07-19 EIN52A DUB → CDG Jul 19, 06:15 UTCJul 19, 07:25 UTC1h 10m
2026-07-18 EIN1TC - Jul 18, 21:45 UTCJul 19, 03:50 UTC6h 5m
2026-07-18 EIN10M DUB → EWR Jul 18, 12:30 UTCJul 18, 19:25 UTC6h 55m
2026-07-18 EIN52X CDG → DUB Jul 18, 08:45 UTCJul 18, 10:05 UTC1h 20m
2026-07-18 EIN52A DUB → CDG Jul 18, 06:30 UTCJul 18, 07:40 UTC1h 10m
2026-07-17 EIN11P IAD → DUB Jul 17, 21:15 UTCJul 18, 03:50 UTC6h 36m
2026-07-17 EIN11T DUB → IAD Jul 17, 11:55 UTCJul 17, 19:05 UTC7h 10m
2026-07-16 EIN11P IAD → DUB Jul 16, 23:15 UTCJul 17, 05:45 UTC6h 30m
2026-07-16 EIN11T DUB → IAD Jul 16, 14:10 UTCJul 16, 21:19 UTC7h 10m
2026-07-16 EIN118 IAD → DUB Jul 16, 01:10 UTCJul 16, 07:45 UTC6h 35m
2026-07-15 EIN119 - Jul 15, 16:10 UTCJul 15, 23:25 UTC7h 15m
2026-07-14 EIN1TC - Jul 14, 21:40 UTCJul 15, 03:50 UTC6h 9m
2026-07-14 EIN10M - Jul 14, 13:05 UTCJul 14, 19:50 UTC6h 45m
2026-07-14 EIN108 JFK → DUB Jul 14, 04:15 UTCJul 14, 10:30 UTC6h 15m
2026-07-13 EIN109 DUB → JFK Jul 13, 19:00 UTCJul 14, 01:40 UTC6h 40m
2026-07-13 EIN3GM - Jul 13, 09:35 UTCJul 13, 11:35 UTC2h 0m
2026-07-13 EIN3KM DUB → MUC Jul 13, 06:30 UTCJul 13, 08:35 UTC2h 5m
2026-07-12 EIN1TC - Jul 12, 21:35 UTCJul 13, 03:30 UTC5h 55m
2026-07-12 EIN10M - Jul 12, 17:55 UTCJul 12, 19:40 UTC1h 45m
2026-07-12 EIN10M - Jul 12, 12:55 UTCJul 12, 17:50 UTC4h 55m
2026-07-12 EIN108 JFK → DUB Jul 12, 04:30 UTCJul 12, 10:40 UTC6h 10m
2026-07-11 EIN109 DUB → JFK Jul 11, 19:10 UTCJul 12, 02:20 UTC7h 10m
2026-07-11 EIN209 - Jul 11, 14:15 UTCJul 11, 14:50 UTC35m
2026-07-11 EIN2EM DUB → MAN Jul 11, 12:05 UTCJul 11, 12:45 UTC40m
2026-07-11 EIN108 - Jul 11, 04:10 UTCJul 11, 09:55 UTC5h 45m

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

Mode-S 4CABD1 frequently asked

What is Mode-S code 4CABD1?
4CABD1 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-LRE.
Where is Mode-S 4CABD1 registered?
Mode-S code 4CABD1 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CABD1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CABD1, octal 23125721, decimal 5,024,721.
What flights does 4CABD1 operate?
Mode-S 4CABD1 has broadcast 20 distinct callsigns, including EIN1AC, EIN1YL, EIN1EA, EIN38A, EIN1LH.