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 10h ago
Flights observed
173
Distinct callsigns
20
Country
IE
Last broadcast
10h ago

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
EIN118 Aer Lingus 13 2026-05-25
EIN119 Aer Lingus 11 2026-05-24
EIN3KM Aer Lingus 8 2026-05-23
EIN3GM Aer Lingus 8 2026-05-23
EIN1PR Aer Lingus 8 2026-05-22
EIN13X Aer Lingus 8 2026-05-22
EIN11P Aer Lingus 8 2026-05-25
EIN9AR Aer Lingus 7 2026-05-04
EIN1TC Aer Lingus 7 2026-04-25
EIN11T Aer Lingus 7 2026-05-25
EIN10M Aer Lingus 7 2026-04-25
EIN9LT Aer Lingus 6 2026-05-04
EIN60T Aer Lingus 6 2026-05-12
EIN605P Aer Lingus 6 2026-05-12
EIN52A Aer Lingus 6 2026-05-22
EIN139 Aer Lingus 6 2026-05-26
EIN138 Aer Lingus 6 2026-05-15
EIN52X Aer Lingus 5 2026-05-22
EIN1XL Aer Lingus 5 2026-05-11
EIN1XG Aer Lingus 3 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EIN145 SNN → BOS May 29, 10:00 UTCMay 29, 16:00 UTC6h 0m
2026-05-28 EIN1EA JFK → SNN May 28, 22:40 UTCMay 29, 04:30 UTC5h 50m
2026-05-28 EIN1LH SNN → JFK May 28, 13:30 UTCMay 28, 19:40 UTC6h 10m
2026-05-28 EIN381 LHR → SNN May 28, 10:30 UTCMay 28, 11:25 UTC55m
2026-05-28 EIN38A SNN → LHR May 28, 08:15 UTCMay 28, 09:20 UTC1h 5m
2026-05-27 EIN1EA JFK → SNN May 27, 23:00 UTCMay 28, 04:50 UTC5h 50m
2026-05-27 EIN1LH SNN → JFK May 27, 13:35 UTCMay 27, 19:55 UTC6h 20m
2026-05-27 EIN144 BOS → SNN May 27, 03:29 UTCMay 27, 09:10 UTC5h 40m
2026-05-26 EIN139 DUB → BOS May 26, 19:10 UTCMay 27, 00:44 UTC5h 35m
2026-05-26 EIN7AC ACE → DUB May 26, 11:54 UTCMay 26, 15:14 UTC3h 20m
2026-05-26 EIN776 DUB → ACE May 26, 06:54 UTCMay 26, 10:10 UTC3h 15m
2026-05-25 EIN11P IAD → DUB May 25, 21:15 UTCMay 26, 03:19 UTC6h 5m
2026-05-25 EIN11T DUB → IAD May 25, 12:00 UTCMay 25, 19:25 UTC7h 24m
2026-05-25 EIN118 IAD → DUB May 25, 01:55 UTCMay 25, 07:15 UTC5h 20m
2026-05-24 EIN119 DUB → IAD May 24, 23:00 UTCMay 24, 23:05 UTC5m
2026-05-24 EIN119 DUB → IAD May 24, 15:55 UTCMay 24, 21:50 UTC5h 55m
2026-05-24 EIN2747 BIO → DUB May 24, 10:20 UTCMay 24, 12:00 UTC1h 40m
2026-05-24 EIN2746 DUB → BIO May 24, 07:45 UTCMay 24, 09:15 UTC1h 30m
2026-05-23 EIN3GM MUC → DUB May 23, 09:40 UTCMay 23, 11:45 UTC2h 5m
2026-05-23 EIN3KM DUB → MUC May 23, 06:45 UTCMay 23, 08:35 UTC1h 50m
2026-05-22 EIN1PR BDL → DUB May 22, 22:10 UTCMay 23, 03:20 UTC5h 9m
2026-05-22 EIN13X DUB → BDL May 22, 13:40 UTCMay 22, 20:00 UTC6h 20m
2026-05-22 EIN52X CDG → DUB May 22, 08:50 UTCMay 22, 10:10 UTC1h 20m
2026-05-22 EIN52A DUB → CDG May 22, 06:30 UTCMay 22, 07:40 UTC1h 10m
2026-05-21 EIN1PR BDL → DUB May 21, 22:20 UTCMay 22, 03:40 UTC5h 20m
2026-05-21 EIN13X DUB → BDL May 21, 14:00 UTCMay 21, 20:35 UTC6h 35m
2026-05-21 EIN118 IAD → DUB May 21, 03:45 UTCMay 21, 10:00 UTC6h 15m
2026-05-20 EIN119 DUB → IAD May 20, 15:40 UTCMay 20, 23:25 UTC7h 45m
2026-05-20 EIN643 PRG → DUB May 20, 10:10 UTCMay 20, 12:20 UTC2h 10m
2026-05-20 EIN642 DUB → PRG May 20, 06:55 UTCMay 20, 08:50 UTC1h 55m
2026-05-19 EIN11P IAD → DUB May 19, 21:20 UTCMay 20, 03:50 UTC6h 30m
2026-05-19 EIN11T DUB → IAD May 19, 11:55 UTCMay 19, 18:55 UTC7h 0m
2026-05-19 EIN52X CDG → DUB May 19, 08:40 UTCMay 19, 10:05 UTC1h 25m
2026-05-19 EIN52A DUB → CDG May 19, 06:05 UTCMay 19, 07:25 UTC1h 20m
2026-05-18 EIN11P IAD → DUB May 18, 21:45 UTCMay 19, 04:10 UTC6h 25m
2026-05-18 EIN11T DUB → IAD May 18, 11:50 UTCMay 18, 18:45 UTC6h 54m
2026-05-18 EIN118 IAD → DUB May 18, 01:20 UTCMay 18, 07:40 UTC6h 20m
2026-05-17 EIN119 DUB → IAD May 17, 16:25 UTCMay 17, 23:35 UTC7h 10m
2026-05-17 EIN4LK LIS → DUB May 17, 11:15 UTCMay 17, 14:15 UTC3h 0m
2026-05-17 EIN82T DUB → LIS May 17, 06:40 UTCMay 17, 08:55 UTC2h 15m
2026-05-16 EIN7VT ACE → DUB May 16, 19:20 UTCMay 16, 22:45 UTC3h 25m
2026-05-16 EIN77C DUB → ACE May 16, 14:16 UTCMay 16, 17:30 UTC3h 15m
2026-05-16 EIN3GM MUC → DUB May 16, 09:35 UTCMay 16, 11:35 UTC2h 0m
2026-05-16 EIN3KM DUB → MUC May 16, 06:41 UTCMay 16, 08:31 UTC1h 50m
2026-05-15 EIN1PR BDL → DUB May 15, 22:10 UTCMay 16, 03:40 UTC5h 30m
2026-05-15 EIN13X DUB → BDL May 15, 13:25 UTCMay 15, 20:15 UTC6h 49m
2026-05-15 EIN138 BOS → DUB May 15, 04:00 UTCMay 15, 09:25 UTC5h 25m
2026-05-14 EIN139 DUB → BOS May 14, 19:00 UTCMay 15, 01:55 UTC6h 55m
2026-05-14 EIN3GM MUC → DUB May 14, 09:45 UTCMay 14, 11:40 UTC1h 55m
2026-05-14 EIN3KM DUB → MUC May 14, 07:00 UTCMay 14, 08:50 UTC1h 50m

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 10h ago.
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 EIN118, EIN119, EIN3KM, EIN3GM, EIN1PR.