Apparatus

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sensors Mode-S transponder

4CA9BA

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CA9BA
Octal
23124672
Decimal
5,024,186
Country
IE
Tail
EI-LRA
Type
A21N
No current signal · last broadcast 58m ago
Flights observed
181
Distinct callsigns
20
Country
IE
Last broadcast
58m ago

Last known position

Most recent position reported by Mode-S 4CA9BA.

Country allocation

The ICAO 24-bit address 4CA9BA 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
EIN1YL Aer Lingus 14 2026-05-26
EIN1AC Aer Lingus 14 2026-05-26
EIN38A Aer Lingus 11 2026-05-26
EIN381 Aer Lingus 11 2026-05-26
EIN1TC Aer Lingus 11 2026-05-28
EIN1EA Aer Lingus 11 2026-05-25
EIN10M Aer Lingus 11 2026-05-28
EIN1LH Aer Lingus 10 2026-05-25
EIN1XG Aer Lingus 8 2026-05-24
EIN52A Aer Lingus 7 2026-05-14
EIN1XL Aer Lingus 7 2026-05-23
EIN52X Aer Lingus 6 2026-05-14
EIN9LT Aer Lingus 4 2026-05-30
EIN909 Aer Lingus 4 2026-05-07
EIN524 Aer Lingus 4 2026-05-23
EIN13X Aer Lingus 4 2026-05-30
EIN119 Aer Lingus 4 2026-05-14
EIN118 Aer Lingus 4 2026-05-15
EIN9HR Aer Lingus 3 2026-05-07
EIN9AR Aer Lingus 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EIN13X DUB → BDL May 30, 13:40 UTCMay 30, 20:20 UTC6h 40m
2026-05-30 EIN9LT CLE → DUB May 30, 02:20 UTCMay 30, 07:20 UTC5h 0m
2026-05-30 EIN9LT CLE → DUB May 30, 00:40 UTCMay 30, 02:15 UTC1h 35m
2026-05-29 EIN9AR DUB → CLE May 29, 15:30 UTCMay 29, 22:35 UTC7h 5m
2026-05-29 EIN6CE VIE → DUB May 29, 09:50 UTCMay 29, 12:35 UTC2h 45m
2026-05-29 EIN66V DUB → VIE May 29, 06:30 UTCMay 29, 08:40 UTC2h 10m
2026-05-28 EIN1TC EWR → DUB May 28, 23:30 UTCMay 29, 04:10 UTC4h 40m
2026-05-28 EIN1TC EWR → DUB May 28, 22:00 UTCMay 28, 23:25 UTC1h 25m
2026-05-28 EIN10M DUB → EWR May 28, 13:25 UTCMay 28, 20:00 UTC6h 35m
2026-05-28 EIN138 BOS → DUB May 28, 03:30 UTCMay 28, 09:30 UTC6h 0m
2026-05-27 EIN145 SNN → BOS May 27, 10:00 UTCMay 27, 15:50 UTC5h 50m
2026-05-26 EIN1YL BOS → SNN May 26, 22:44 UTCMay 27, 04:19 UTC5h 35m
2026-05-26 EIN1AC SNN → BOS May 26, 17:59 UTCMay 26, 18:55 UTC55m
2026-05-26 EIN1AC SNN → BOS May 26, 12:50 UTCMay 26, 17:55 UTC5h 5m
2026-05-26 EIN381 LHR → SNN May 26, 09:15 UTCMay 26, 10:05 UTC50m
2026-05-26 EIN38A SNN → LHR May 26, 06:39 UTCMay 26, 07:55 UTC1h 15m
2026-05-25 EIN1EA JFK → SNN May 25, 22:34 UTCMay 26, 04:04 UTC5h 30m
2026-05-25 EIN1LH SNN → JFK May 25, 13:35 UTCMay 25, 20:15 UTC6h 40m
2026-05-25 EIN144 BOS → SNN May 25, 03:45 UTCMay 25, 09:10 UTC5h 25m
2026-05-24 EIN139 DUB → BOS May 24, 19:05 UTCMay 24, 19:55 UTC50m
2026-05-24 EIN42C VCE → DUB May 24, 15:00 UTCMay 24, 17:20 UTC2h 20m
2026-05-24 EIN42M DUB → VCE May 24, 10:40 UTCMay 24, 13:05 UTC2h 25m
2026-05-24 EIN1XG PHL → DUB May 24, 00:45 UTCMay 24, 06:45 UTC6h 0m
2026-05-23 EIN1XL DUB → PHL May 23, 15:30 UTCMay 23, 22:40 UTC7h 11m
2026-05-23 EIN525 CDG → DUB May 23, 11:30 UTCMay 23, 12:40 UTC1h 10m
2026-05-23 EIN524 DUB → CDG May 23, 09:15 UTCMay 23, 10:25 UTC1h 10m
2026-05-23 EIN9LT CLE → DUB May 23, 00:00 UTCMay 23, 06:20 UTC6h 19m
2026-05-22 EIN9AR DUB → CLE May 22, 15:05 UTCMay 22, 22:10 UTC7h 5m
2026-05-22 EIN605P AMS → DUB May 22, 11:45 UTCMay 22, 13:00 UTC1h 15m
2026-05-22 EIN60T DUB → AMS May 22, 09:25 UTCMay 22, 10:30 UTC1h 5m
2026-05-22 EIN1XG PHL → DUB May 22, 00:50 UTCMay 22, 06:40 UTC5h 50m
2026-05-21 EIN1XL DUB → PHL May 21, 15:25 UTCMay 21, 22:35 UTC7h 10m
2026-05-21 EIN3GM MUC → DUB May 21, 09:55 UTCMay 21, 12:05 UTC2h 10m
2026-05-21 EIN3KM DUB → MUC May 21, 07:10 UTCMay 21, 09:00 UTC1h 50m
2026-05-19 EIN1PR BDL → DUB May 19, 22:10 UTCMay 20, 04:05 UTC5h 55m
2026-05-19 EIN13X DUB → BDL May 19, 13:35 UTCMay 19, 20:05 UTC6h 30m
2026-05-19 EIN205 MAN → DUB May 19, 10:55 UTCMay 19, 11:35 UTC40m
2026-05-19 EIN204 DUB → MAN May 19, 09:20 UTCMay 19, 09:55 UTC35m
2026-05-19 EIN1XG PHL → DUB May 19, 01:00 UTCMay 19, 07:15 UTC6h 15m
2026-05-18 EIN1XL DUB → PHL May 18, 15:25 UTCMay 18, 22:00 UTC6h 34m
2026-05-18 EIN6CE VIE → DUB May 18, 10:00 UTCMay 18, 12:30 UTC2h 30m
2026-05-18 EIN66V DUB → VIE May 18, 06:35 UTCMay 18, 08:45 UTC2h 10m
2026-05-17 EIN1PR BDL → DUB May 17, 22:30 UTCMay 18, 04:11 UTC5h 40m
2026-05-17 EIN13X DUB → BDL May 17, 14:10 UTCMay 17, 20:45 UTC6h 35m
2026-05-17 EIN205 MAN → DUB May 17, 10:55 UTCMay 17, 11:25 UTC30m
2026-05-17 EIN204 DUB → MAN May 17, 09:05 UTCMay 17, 09:40 UTC35m
2026-05-17 EIN1XG PHL → DUB May 17, 00:50 UTCMay 17, 06:55 UTC6h 5m
2026-05-16 EIN1XL DUB → PHL May 16, 15:35 UTCMay 16, 22:50 UTC7h 15m
2026-05-16 EIN525 CDG → DUB May 16, 11:46 UTCMay 16, 13:01 UTC1h 15m
2026-05-16 EIN524 DUB → CDG May 16, 09:16 UTCMay 16, 10:35 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-LRA page for operator, model, and routing details .

Mode-S 4CA9BA frequently asked

What is Mode-S code 4CA9BA?
4CA9BA is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-LRA.
Where is Mode-S 4CA9BA registered?
Mode-S code 4CA9BA is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9BA broadcasting right now?
No active broadcast right now. Last signal was 58m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9BA, octal 23124672, decimal 5,024,186.
What flights does 4CA9BA operate?
Mode-S 4CA9BA has broadcast 20 distinct callsigns, including EIN1YL, EIN1AC, EIN38A, EIN381, EIN1TC.