Apparatus

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sensors Mode-S transponder

4CA9CB

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CA9CB
Octal
23124713
Decimal
5,024,203
Country
IE
Tail
EI-LRD
Type
A21N
No current signal · last broadcast Jul 26, 22:35 UTC
Flights observed
371
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:35 UTC

Last known position

Most recent position reported by Mode-S 4CA9CB.

Country allocation

The ICAO 24-bit address 4CA9CB 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
EIN1TC Aer Lingus 18 2026-07-23
EIN10M Aer Lingus 18 2026-07-23
EIN13X - 17 2026-07-22
EIN1PR Aer Lingus 15 2026-07-22
EIN118 Aer Lingus 15 2026-07-19
EIN52A Aer Lingus 14 2026-07-23
EIN9AR Aer Lingus 13 2026-07-21
EIN52X Aer Lingus 13 2026-07-23
EIN119 Aer Lingus 13 2026-07-18
EIN9LT Aer Lingus 12 2026-07-22
EIN3KM Aer Lingus 12 2026-07-24
EIN3GM Aer Lingus 12 2026-07-24
EIN11P - 10 2026-07-10
EIN109 - 10 2026-07-20
EIN139 - 9 2026-07-12
EIN138 - 9 2026-07-07
EIN11T - 9 2026-07-10
EIN108 Aer Lingus 9 2026-07-21
EIN60T - 8 2026-07-15
EIN605P - 8 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EIN9AF DUB → PIT Jul 26, 15:20 UTCJul 26, 22:35 UTC7h 15m
2026-07-26 EIN525 CDG → DUB Jul 26, 11:30 UTCJul 26, 12:55 UTC1h 25m
2026-07-26 EIN524 DUB → CDG Jul 26, 09:00 UTCJul 26, 10:10 UTC1h 10m
2026-07-26 EIN1XG PHL → DUB Jul 26, 00:35 UTCJul 26, 06:30 UTC5h 55m
2026-07-25 EIN1XL DUB → PHL Jul 25, 15:40 UTCJul 25, 22:35 UTC6h 55m
2026-07-25 EIN525 CDG → DUB Jul 25, 11:35 UTCJul 25, 12:50 UTC1h 15m
2026-07-25 EIN524 DUB → CDG Jul 25, 09:05 UTCJul 25, 10:20 UTC1h 15m
2026-07-24 RYR4999 CRL → POZ Jul 24, 20:10 UTCJul 24, 20:20 UTC10m
2026-07-24 RYR41NU LTN → LUZ Jul 24, 17:20 UTCJul 24, 18:30 UTC1h 10m
2026-07-24 EIN3GM MUC → DUB Jul 24, 09:45 UTCJul 24, 11:45 UTC2h 0m
2026-07-24 EIN3KM DUB → MUC Jul 24, 06:45 UTCJul 24, 08:35 UTC1h 50m
2026-07-23 EIN1TC EWR → DUB Jul 23, 21:40 UTCJul 24, 03:35 UTC5h 55m
2026-07-23 EIN10M DUB → EWR Jul 23, 12:50 UTCJul 23, 19:45 UTC6h 55m
2026-07-23 EIN52X CDG → DUB Jul 23, 09:10 UTCJul 23, 10:30 UTC1h 20m
2026-07-23 EIN52A DUB → CDG Jul 23, 06:40 UTCJul 23, 07:50 UTC1h 10m
2026-07-22 EIN1PR BDL → DUB Jul 22, 21:55 UTCJul 23, 03:30 UTC5h 35m
2026-07-22 EIN13X - Jul 22, 18:05 UTCJul 22, 19:55 UTC1h 50m
2026-07-22 EIN13X - Jul 22, 13:30 UTCJul 22, 14:15 UTC45m
2026-07-22 EIN9LT CLE → DUB Jul 22, 00:25 UTCJul 22, 02:25 UTC2h 0m
2026-07-21 EIN9AR DUB → CLE Jul 21, 15:15 UTCJul 21, 22:35 UTC7h 20m
2026-07-21 EIN108 JFK → DUB Jul 21, 04:20 UTCJul 21, 10:10 UTC5h 50m
2026-07-20 EIN109 - Jul 20, 23:40 UTCJul 21, 01:50 UTC2h 10m
2026-07-20 EIN109 - Jul 20, 19:00 UTCJul 20, 19:40 UTC40m
2026-07-20 EIN108 JFK → DUB Jul 20, 04:00 UTCJul 20, 09:55 UTC5h 55m
2026-07-19 EIN109 DUB → JFK Jul 19, 19:00 UTCJul 20, 01:45 UTC6h 45m
2026-07-19 EIN42C VCE → DUB Jul 19, 13:55 UTCJul 19, 16:20 UTC2h 25m
2026-07-19 EIN42M DUB → VCE Jul 19, 10:35 UTCJul 19, 12:40 UTC2h 5m
2026-07-19 EIN118 IAD → DUB Jul 19, 02:00 UTCJul 19, 08:10 UTC6h 10m
2026-07-19 EIN118 IAD → DUB Jul 19, 01:05 UTCJul 19, 01:55 UTC50m
2026-07-18 EIN119 DUB → IAD Jul 18, 20:20 UTCJul 18, 23:00 UTC2h 40m
2026-07-18 - - Jul 18, 17:35 UTCJul 18, 17:45 UTC10m
2026-07-18 EIN119 DUB → IAD Jul 18, 15:35 UTCJul 18, 16:20 UTC45m
2026-07-18 EIN3GM MUC → DUB Jul 18, 09:35 UTCJul 18, 11:40 UTC2h 5m
2026-07-18 EIN3KM DUB → MUC Jul 18, 06:45 UTCJul 18, 08:40 UTC1h 55m
2026-07-17 EIN1TC EWR → DUB Jul 17, 22:00 UTCJul 18, 04:10 UTC6h 11m
2026-07-17 EIN10M DUB → EWR Jul 17, 12:40 UTCJul 17, 19:25 UTC6h 45m
2026-07-17 EIN52X CDG → DUB Jul 17, 08:40 UTCJul 17, 10:10 UTC1h 30m
2026-07-17 EIN52A DUB → CDG Jul 17, 06:15 UTCJul 17, 07:35 UTC1h 20m
2026-07-16 EIN1PR - Jul 16, 22:15 UTCJul 17, 03:59 UTC5h 45m
2026-07-16 EIN13X - Jul 16, 13:49 UTCJul 16, 20:15 UTC6h 25m
2026-07-16 EIN205 - Jul 16, 11:10 UTCJul 16, 11:45 UTC35m
2026-07-16 EIN204 - Jul 16, 09:15 UTCJul 16, 09:45 UTC30m
2026-07-16 EIN9EG - Jul 16, 00:40 UTCJul 16, 07:20 UTC6h 40m
2026-07-15 EIN9AF - Jul 15, 15:15 UTCJul 15, 22:25 UTC7h 10m
2026-07-15 EIN605P - Jul 15, 11:45 UTCJul 15, 12:50 UTC1h 5m
2026-07-15 EIN60T DUB → AMS Jul 15, 09:25 UTCJul 15, 10:35 UTC1h 10m
2026-07-15 EIN991 - Jul 15, 05:45 UTCJul 15, 06:10 UTC25m
2026-07-14 EIN1YL - Jul 14, 22:55 UTCJul 15, 04:25 UTC5h 30m
2026-07-14 EIN1AC - Jul 14, 12:45 UTCJul 14, 18:50 UTC6h 5m
2026-07-14 EIN381 - Jul 14, 09:20 UTCJul 14, 10:10 UTC50m

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

Mode-S 4CA9CB frequently asked

What is Mode-S code 4CA9CB?
4CA9CB is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-LRD.
Where is Mode-S 4CA9CB registered?
Mode-S code 4CA9CB is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9CB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9CB, octal 23124713, decimal 5,024,203.
What flights does 4CA9CB operate?
Mode-S 4CA9CB has broadcast 20 distinct callsigns, including EIN1TC, EIN10M, EIN13X, EIN1PR, EIN118.