Apparatus

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sensors Mode-S transponder

4CA217

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DEF · AIRBUS A-320

Hex
4CA217
Octal
23121027
Decimal
5,022,231
Country
IE
Tail
EI-DEF
Type
A320
Broadcasting now · callsign EIN477 · 36,000 ft
Flights observed
193
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Current position

4CA217 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA217 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
EIN45N - 19 2026-06-22
EIN45F - 19 2026-06-22
EIN76K - 14 2026-06-22
EIN76H Aer Lingus 14 2026-06-22
EIN5HA Aer Lingus 4 2026-06-05
EIN585 Aer Lingus 4 2026-06-05
EIN429 Aer Lingus 4 2026-06-05
EIN428 Aer Lingus 4 2026-06-05
EIN27T Aer Lingus 3 2026-06-12
EIN27G Aer Lingus 3 2026-06-12
EIN7JC Aer Lingus 2 2026-06-18
EIN78L - 2 2026-06-18
EIN6HR Aer Lingus 2 2026-06-01
EIN6AP Aer Lingus 2 2026-05-25
EIN69Y Aer Lingus 2 2026-06-01
EIN69D Aer Lingus 2 2026-06-01
EIN681 Aer Lingus 2 2026-06-08
EIN680 Aer Lingus 2 2026-06-08
EIN67T Aer Lingus 2 2026-06-01
EIN643 Aer Lingus 2 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 EIN477 - Jun 23, 11:14 UTCJun 23, 11:45 UTC30m
2026-06-23 EIN4AM DUB → DBV Jun 23, 07:05 UTCJun 23, 09:49 UTC2h 45m
2026-06-22 EIN76H TFS → DUB Jun 22, 19:40 UTCJun 22, 22:54 UTC3h 15m
2026-06-22 EIN76K - Jun 22, 14:24 UTCJun 22, 18:19 UTC3h 55m
2026-06-22 EIN45N - Jun 22, 10:15 UTCJun 22, 13:05 UTC2h 50m
2026-06-22 EIN45F - Jun 22, 05:24 UTCJun 22, 08:19 UTC2h 55m
2026-06-21 EIN5XL ALC → DUB Jun 21, 19:45 UTCJun 21, 22:04 UTC2h 20m
2026-06-21 EIN574 DUB → ALC Jun 21, 15:49 UTCJun 21, 18:14 UTC2h 25m
2026-06-21 EIN34J ZRH → DUB Jun 21, 10:14 UTCJun 21, 12:14 UTC2h 0m
2026-06-21 EIN3CG DUB → ZRH Jun 21, 07:25 UTCJun 21, 09:04 UTC1h 40m
2026-06-20 EIN741 OVD → DUB Jun 20, 20:49 UTCJun 20, 22:20 UTC1h 30m
2026-06-20 EIN740 DUB → OVD Jun 20, 18:24 UTCJun 20, 20:00 UTC1h 35m
2026-06-20 EIN45N - Jun 20, 10:39 UTCJun 20, 13:29 UTC2h 50m
2026-06-20 EIN45F - Jun 20, 05:34 UTCJun 20, 08:19 UTC2h 45m
2026-06-19 EIN463 CTA → DUB Jun 19, 18:25 UTCJun 19, 21:34 UTC3h 10m
2026-06-19 EIN46P DUB → CTA Jun 19, 13:44 UTCJun 19, 16:59 UTC3h 15m
2026-06-19 EIN4TH - Jun 19, 09:55 UTCJun 19, 12:25 UTC2h 30m
2026-06-19 EIN40G - Jun 19, 05:49 UTCJun 19, 08:24 UTC2h 35m
2026-06-18 EIN7JC LPA → DUB Jun 18, 20:25 UTCJun 19, 00:00 UTC3h 35m
2026-06-18 EIN78L - Jun 18, 14:50 UTCJun 18, 18:45 UTC3h 55m
2026-06-18 EIN45N - Jun 18, 10:20 UTCJun 18, 13:10 UTC2h 50m
2026-06-18 EIN45F - Jun 18, 06:00 UTCJun 18, 08:40 UTC2h 40m
2026-06-17 EIN76H TFS → DUB Jun 17, 20:10 UTCJun 17, 23:30 UTC3h 20m
2026-06-17 EIN76K - Jun 17, 14:30 UTCJun 17, 18:25 UTC3h 55m
2026-06-17 EIN45N - Jun 17, 10:15 UTCJun 17, 13:05 UTC2h 50m
2026-06-17 EIN45F - Jun 17, 05:25 UTCJun 17, 08:05 UTC2h 40m
2026-06-16 EIN459 BDS → DUB Jun 16, 18:39 UTCJun 16, 22:00 UTC3h 21m
2026-06-16 EIN458 DUB → BDS Jun 16, 14:39 UTCJun 16, 17:35 UTC2h 55m
2026-06-16 EIN45N - Jun 16, 10:25 UTCJun 16, 13:19 UTC2h 55m
2026-06-16 EIN45F - Jun 16, 05:40 UTCJun 16, 08:15 UTC2h 35m
2026-06-15 EIN529 CDG → DUB Jun 15, 20:20 UTCJun 15, 21:40 UTC1h 20m
2026-06-15 EIN52N DUB → CDG Jun 15, 18:15 UTCJun 15, 19:20 UTC1h 5m
2026-06-15 EIN5HM PGF → DUB Jun 15, 14:45 UTCJun 15, 16:40 UTC1h 55m
2026-06-15 EIN1MP DUB → PGF Jun 15, 11:39 UTCJun 15, 13:34 UTC1h 55m
2026-06-15 EIN69X - Jun 15, 08:40 UTCJun 15, 10:24 UTC1h 45m
2026-06-15 EIN69L DUB → DUS Jun 15, 06:00 UTCJun 15, 07:15 UTC1h 15m
2026-06-14 EIN5HM PGF → DUB Jun 14, 17:15 UTCJun 14, 19:10 UTC1h 55m
2026-06-14 EIN1MP DUB → PGF Jun 14, 14:05 UTCJun 14, 16:00 UTC1h 55m
2026-06-14 EIN643 PRG → DUB Jun 14, 10:00 UTCJun 14, 12:20 UTC2h 20m
2026-06-14 EIN642 DUB → PRG Jun 14, 06:45 UTCJun 14, 08:35 UTC1h 50m
2026-06-13 EIN76H TFS → DUB Jun 13, 19:40 UTCJun 13, 23:25 UTC3h 45m
2026-06-13 EIN76K DUB → TFS Jun 13, 14:35 UTCJun 13, 18:25 UTC3h 50m
2026-06-13 EIN45N NAP → DUB Jun 13, 10:15 UTCJun 13, 13:15 UTC3h 0m
2026-06-13 EIN45F DUB → NAP Jun 13, 05:40 UTCJun 13, 08:20 UTC2h 40m
2026-06-12 EIN27G BHX → DUB Jun 12, 20:30 UTCJun 12, 21:20 UTC50m
2026-06-12 EIN27T DUB → BHX Jun 12, 18:55 UTCJun 12, 19:35 UTC40m
2026-06-12 EIN5PC LYS → DUB Jun 12, 15:45 UTCJun 12, 17:35 UTC1h 50m
2026-06-12 EIN5MW DUB → LYS Jun 12, 12:50 UTCJun 12, 14:30 UTC1h 40m
2026-06-11 EIN76H TFS → DUB Jun 11, 20:05 UTCJun 11, 23:35 UTC3h 30m
2026-06-11 EIN76K DUB → TFS Jun 11, 14:55 UTCJun 11, 18:45 UTC3h 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-DEF page for operator, model, and routing details .

Mode-S 4CA217 frequently asked

What is Mode-S code 4CA217?
4CA217 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DEF.
Where is Mode-S 4CA217 registered?
Mode-S code 4CA217 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA217 broadcasting right now?
Yes. Mode-S 4CA217 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA217, octal 23121027, decimal 5,022,231.
What flights does 4CA217 operate?
Mode-S 4CA217 has broadcast 20 distinct callsigns, including EIN45N, EIN45F, EIN76K, EIN76H, EIN5HA.