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
Broadcasting now · callsign EIN776 · 34,575 ft
Flights observed
186
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Current position

4CABD1 is currently broadcasting. Map zoomed to live position.

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 24 2026-05-16
EIN1EA Aer Lingus 23 2026-05-14
EIN38A Aer Lingus 21 2026-05-16
EIN1YL Aer Lingus 21 2026-05-16
EIN1LH Aer Lingus 21 2026-05-14
EIN381 Aer Lingus 19 2026-05-16
EIN52X Aer Lingus 7 2026-05-29
EIN9HR Aer Lingus 6 2026-05-17
EIN52A Aer Lingus 6 2026-05-29
EIN1TC Aer Lingus 5 2026-05-29
EIN13X Aer Lingus 5 2026-05-28
EIN10M Aer Lingus 5 2026-05-29
EIN909 Aer Lingus 4 2026-05-10
EIN1PR Aer Lingus 4 2026-05-28
EIN7JC Aer Lingus 1 2026-05-27
EIN78L Aer Lingus 1 2026-05-27
EIN776 Aer Lingus 1 2026-05-30
EIN6CE Aer Lingus 1 2026-05-22
EIN66V Aer Lingus 1 2026-05-22
EIN627 Aer Lingus 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EIN776 DUB → ACE May 30, 06:30 UTCMay 30, 08:15 UTC1h 45m
2026-05-29 EIN1TC EWR → DUB May 29, 21:50 UTCMay 30, 03:55 UTC6h 5m
2026-05-29 EIN10M DUB → EWR May 29, 12:55 UTCMay 29, 19:30 UTC6h 35m
2026-05-29 EIN52X CDG → DUB May 29, 08:40 UTCMay 29, 10:00 UTC1h 20m
2026-05-29 EIN52A DUB → CDG May 29, 06:15 UTCMay 29, 07:30 UTC1h 15m
2026-05-28 EIN1PR BDL → DUB May 28, 22:20 UTCMay 29, 04:10 UTC5h 50m
2026-05-28 EIN13X DUB → BDL May 28, 19:05 UTCMay 28, 20:20 UTC1h 15m
2026-05-28 EIN13X DUB → BDL May 28, 14:05 UTCMay 28, 19:00 UTC4h 55m
2026-05-28 EIN52X CDG → DUB May 28, 08:45 UTCMay 28, 10:05 UTC1h 20m
2026-05-28 EIN52A DUB → CDG May 28, 06:05 UTCMay 28, 07:20 UTC1h 15m
2026-05-27 EIN7JC LPA → DUB May 27, 20:50 UTCMay 28, 00:25 UTC3h 35m
2026-05-27 EIN78L DUB → LPA May 27, 15:10 UTCMay 27, 19:00 UTC3h 50m
2026-05-26 EIN1YG LHR → DUB May 26, 19:45 UTCMay 26, 20:29 UTC45m
2026-05-26 EIN1HL DUB → LHR May 26, 16:55 UTCMay 26, 17:50 UTC55m
2026-05-26 EIN627 OSL → DUB May 26, 12:14 UTCMay 26, 14:14 UTC2h 0m
2026-05-26 EIN626 DUB → OSL May 26, 09:35 UTCMay 26, 11:20 UTC1h 45m
2026-05-25 EIN1TC EWR → DUB May 25, 22:19 UTCMay 26, 04:04 UTC5h 45m
2026-05-25 EIN10M DUB → EWR May 25, 12:55 UTCMay 25, 20:04 UTC7h 9m
2026-05-25 EIN52X CDG → DUB May 25, 09:00 UTCMay 25, 10:20 UTC1h 20m
2026-05-25 EIN52A DUB → CDG May 25, 06:40 UTCMay 25, 07:55 UTC1h 15m
2026-05-24 EIN1PR BDL → DUB May 24, 23:00 UTCMay 25, 04:30 UTC5h 30m
2026-05-24 EIN13X DUB → BDL May 24, 14:20 UTCMay 24, 21:00 UTC6h 40m
2026-05-24 EIN52X CDG → DUB May 24, 08:40 UTCMay 24, 09:55 UTC1h 15m
2026-05-24 EIN52A DUB → CDG May 24, 06:10 UTCMay 24, 07:25 UTC1h 15m
2026-05-23 EIN1PR BDL → DUB May 23, 22:05 UTCMay 24, 03:45 UTC5h 40m
2026-05-23 EIN13X DUB → BDL May 23, 13:45 UTCMay 23, 20:10 UTC6h 26m
2026-05-23 EIN205 MAN → DUB May 23, 11:05 UTCMay 23, 11:35 UTC30m
2026-05-23 EIN204 DUB → MAN May 23, 09:20 UTCMay 23, 09:55 UTC35m
2026-05-23 EIN1XG PHL → DUB May 23, 00:50 UTCMay 23, 06:35 UTC5h 45m
2026-05-22 EIN1XL DUB → PHL May 22, 15:25 UTCMay 22, 22:20 UTC6h 55m
2026-05-22 EIN6CE VIE → DUB May 22, 10:05 UTCMay 22, 12:35 UTC2h 30m
2026-05-22 EIN66V DUB → VIE May 22, 06:50 UTCMay 22, 09:05 UTC2h 15m
2026-05-21 EIN1TC EWR → DUB May 21, 21:55 UTCMay 22, 03:20 UTC5h 25m
2026-05-21 EIN10M DUB → EWR May 21, 12:50 UTCMay 21, 19:55 UTC7h 5m
2026-05-21 EIN52X CDG → DUB May 21, 08:45 UTCMay 21, 10:05 UTC1h 20m
2026-05-21 EIN52A DUB → CDG May 21, 06:15 UTCMay 21, 07:25 UTC1h 10m
2026-05-20 EIN1PR BDL → DUB May 20, 22:05 UTCMay 21, 03:45 UTC5h 40m
2026-05-20 EIN13X DUB → BDL May 20, 13:25 UTCMay 20, 20:05 UTC6h 40m
2026-05-20 EIN108 JFK → DUB May 20, 04:20 UTCMay 20, 10:30 UTC6h 11m
2026-05-19 EIN109 DUB → JFK May 19, 19:10 UTCMay 20, 01:50 UTC6h 40m
2026-05-18 EIN1TC EWR → DUB May 18, 21:50 UTCMay 19, 03:50 UTC6h 0m
2026-05-18 EIN10M DUB → EWR May 18, 12:45 UTCMay 18, 19:25 UTC6h 39m
2026-05-18 EIN52X CDG → DUB May 18, 08:35 UTCMay 18, 09:55 UTC1h 20m
2026-05-18 EIN52A DUB → CDG May 18, 06:20 UTCMay 18, 07:30 UTC1h 10m
2026-05-17 EIN1TC EWR → DUB May 17, 22:45 UTCMay 18, 04:30 UTC5h 45m
2026-05-17 EIN10M DUB → EWR May 17, 13:31 UTCMay 17, 20:25 UTC6h 55m
2026-05-17 EIN52X CDG → DUB May 17, 09:05 UTCMay 17, 10:25 UTC1h 20m
2026-05-17 EIN9HR SNN → CDG May 17, 06:20 UTCMay 17, 07:45 UTC1h 25m
2026-05-16 EIN1YL BOS → SNN May 16, 22:45 UTCMay 17, 04:00 UTC5h 15m
2026-05-16 EIN1AC SNN → BOS May 16, 12:50 UTCMay 16, 19:10 UTC6h 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-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?
Yes. Mode-S 4CABD1 is currently airborne.
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, EIN1EA, EIN38A, EIN1YL, EIN1LH.