Apparatus

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sensors Mode-S transponder

4CA9BC

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CA9BC
Octal
23124674
Decimal
5,024,188
Country
IE
Tail
EI-LRC
Type
A21N
No current signal · last broadcast 3h ago
Flights observed
112
Distinct callsigns
20
Country
IE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4CA9BC.

Country allocation

The ICAO 24-bit address 4CA9BC 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
EIN11T Aer Lingus 12 2026-05-28
EIN11P Aer Lingus 11 2026-05-28
EIN139 Aer Lingus 10 2026-05-18
EIN108 Aer Lingus 9 2026-05-07
EIN1TC Aer Lingus 8 2026-05-20
EIN10M Aer Lingus 8 2026-05-20
EIN9LT Aer Lingus 7 2026-05-20
EIN1XL Aer Lingus 7 2026-05-27
EIN1XG Aer Lingus 7 2026-05-28
EIN138 Aer Lingus 7 2026-05-19
EIN9AR Aer Lingus 6 2026-05-19
EIN109 Aer Lingus 5 2026-05-06
EIN119 Aer Lingus 3 2026-05-23
EIN118 Aer Lingus 3 2026-05-24
EIN1PR Aer Lingus 2 2026-05-07
EIN13X Aer Lingus 2 2026-05-07
EIN9EG Aer Lingus 1 2026-05-30
EIN9AF Aer Lingus 1 2026-05-29
EIN990 Aer Lingus 1 2026-05-21
EIN65Y Aer Lingus 1 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 EIN9EG PIT → DUB May 30, 00:30 UTCMay 30, 02:35 UTC2h 5m
2026-05-29 EIN9AF DUB → PIT May 29, 15:05 UTCMay 29, 22:05 UTC7h 0m
2026-05-28 EIN11P IAD → DUB May 28, 21:10 UTCMay 29, 03:40 UTC6h 30m
2026-05-28 EIN11T DUB → IAD May 28, 12:20 UTCMay 28, 19:15 UTC6h 55m
2026-05-28 EIN1XG PHL → DUB May 28, 01:50 UTCMay 28, 08:15 UTC6h 25m
2026-05-27 EIN1XL DUB → PHL May 27, 16:00 UTCMay 28, 00:00 UTC8h 0m
2026-05-25 EIN65W FRA → DUB May 25, 09:50 UTCMay 25, 11:25 UTC1h 35m
2026-05-25 EIN65Y DUB → FRA May 25, 07:15 UTCMay 25, 08:45 UTC1h 30m
2026-05-24 EIN11P IAD → DUB May 24, 23:00 UTCMay 25, 05:15 UTC6h 15m
2026-05-24 EIN11T DUB → IAD May 24, 13:35 UTCMay 24, 20:50 UTC7h 15m
2026-05-24 EIN118 IAD → DUB May 24, 00:40 UTCMay 24, 07:00 UTC6h 20m
2026-05-23 EIN119 DUB → IAD May 23, 15:20 UTCMay 23, 22:40 UTC7h 21m
2026-05-23 EIN118 IAD → DUB May 23, 01:05 UTCMay 23, 07:10 UTC6h 5m
2026-05-22 EIN119 DUB → IAD May 22, 16:00 UTCMay 22, 23:00 UTC7h 0m
2026-05-21 EIN990 DUB → ORK May 21, 22:40 UTCMay 22, 04:35 UTC5h 55m
2026-05-21 EIN11T DUB → IAD May 21, 13:10 UTCMay 21, 20:35 UTC7h 25m
2026-05-20 EIN1TC EWR → DUB May 20, 23:35 UTCMay 21, 05:25 UTC5h 50m
2026-05-20 EIN10M DUB → EWR May 20, 12:45 UTCMay 20, 20:05 UTC7h 20m
2026-05-20 EIN9LT CLE → DUB May 20, 03:10 UTCMay 20, 07:50 UTC4h 41m
2026-05-20 EIN9LT CLE → DUB May 20, 01:05 UTCMay 20, 03:05 UTC2h 0m
2026-05-19 EIN9AR DUB → CLE May 19, 15:10 UTCMay 19, 22:25 UTC7h 15m
2026-05-19 EIN138 BOS → DUB May 19, 03:50 UTCMay 19, 09:50 UTC6h 0m
2026-05-18 EIN139 DUB → BOS May 18, 18:50 UTCMay 19, 00:55 UTC6h 5m
2026-05-17 EIN11P IAD → DUB May 17, 22:15 UTCMay 18, 04:25 UTC6h 10m
2026-05-17 EIN11T DUB → IAD May 17, 13:01 UTCMay 17, 20:15 UTC7h 15m
2026-05-17 EIN9LT CLE → DUB May 17, 00:05 UTCMay 17, 06:30 UTC6h 25m
2026-05-16 EIN9AR DUB → CLE May 16, 15:01 UTCMay 16, 22:30 UTC7h 30m
2026-05-15 EIN11P IAD → DUB May 15, 21:20 UTCMay 16, 03:30 UTC6h 10m
2026-05-15 EIN11T DUB → IAD May 15, 11:55 UTCMay 15, 19:00 UTC7h 4m
2026-05-14 EIN1TC EWR → DUB May 14, 22:25 UTCMay 15, 04:05 UTC5h 40m
2026-05-14 EIN10M DUB → EWR May 14, 12:55 UTCMay 14, 20:05 UTC7h 10m
2026-05-14 EIN138 BOS → DUB May 14, 03:30 UTCMay 14, 09:20 UTC5h 50m
2026-05-13 EIN139 DUB → BOS May 13, 19:05 UTCMay 14, 01:30 UTC6h 25m
2026-05-13 EIN9LT CLE → DUB May 13, 00:30 UTCMay 13, 07:00 UTC6h 30m
2026-05-12 EIN9AR DUB → CLE May 12, 15:05 UTCMay 12, 22:25 UTC7h 20m
2026-05-10 EIN1TC EWR → DUB May 10, 22:09 UTCMay 11, 04:05 UTC5h 55m
2026-05-10 EIN10M DUB → EWR May 10, 12:49 UTCMay 10, 19:50 UTC7h 0m
2026-05-09 EIN1TC EWR → DUB May 9, 22:15 UTCMay 10, 04:15 UTC6h 0m
2026-05-09 EIN10M DUB → EWR May 9, 13:00 UTCMay 9, 20:10 UTC7h 10m
2026-05-09 EIN118 IAD → DUB May 9, 01:05 UTCMay 9, 07:40 UTC6h 35m
2026-05-08 EIN119 DUB → IAD May 8, 15:45 UTCMay 8, 23:10 UTC7h 25m
2026-05-07 EIN1PR BDL → DUB May 7, 22:00 UTCMay 8, 03:39 UTC5h 40m
2026-05-07 EIN13X DUB → BDL May 7, 13:30 UTCMay 7, 20:25 UTC6h 55m
2026-05-07 EIN108 JFK → DUB May 7, 05:20 UTCMay 7, 10:20 UTC5h 0m
2026-05-07 EIN108 JFK → DUB May 7, 04:05 UTCMay 7, 05:15 UTC1h 10m
2026-05-06 EIN109 DUB → JFK May 6, 18:55 UTCMay 7, 02:00 UTC7h 5m
2026-05-05 EIN11P IAD → DUB May 5, 21:15 UTCMay 6, 03:45 UTC6h 30m
2026-05-05 EIN11T DUB → IAD May 5, 11:50 UTCMay 5, 19:00 UTC7h 10m
2026-05-04 EIN1TC EWR → DUB May 4, 21:55 UTCMay 5, 03:55 UTC6h 0m
2026-05-04 EIN10M DUB → EWR May 4, 12:25 UTCMay 4, 19:20 UTC6h 56m

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

Mode-S 4CA9BC frequently asked

What is Mode-S code 4CA9BC?
4CA9BC is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-LRC.
Where is Mode-S 4CA9BC registered?
Mode-S code 4CA9BC is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9BC broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9BC, octal 23124674, decimal 5,024,188.
What flights does 4CA9BC operate?
Mode-S 4CA9BC has broadcast 20 distinct callsigns, including EIN11T, EIN11P, EIN139, EIN108, EIN1TC.