Apparatus

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sensors Mode-S transponder

4CAD1E

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAD1E
Octal
23126436
Decimal
5,025,054
Country
IE
Tail
EI-KGH
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
101
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CAD1E.

Country allocation

The ICAO 24-bit address 4CAD1E 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
KZR663 Air Astana 26 2026-05-26
KZR221 Air Astana 12 2026-05-30
KZR664 Air Astana 10 2026-05-26
KZR193 Air Astana 9 2026-05-08
KZR931 Air Astana 7 2026-05-20
KZR911 Air Astana 6 2026-05-18
KZR162 Air Astana 6 2026-04-14
KZR932 Air Astana 5 2026-05-21
KZR912 Air Astana 3 2026-05-18
KZR646 Air Astana 3 2026-05-04
KZR645 Air Astana 3 2026-05-04
KZR222 Air Astana 3 2026-05-28
KZR907 Air Astana 1 2026-05-01
KZR585 Air Astana 1 2026-04-29
KZR282 Air Astana 1 2026-05-19
KZR267 Air Astana 1 2026-05-27
KZR161 - 1 2026-04-13
KZR142 Air Astana 1 2026-05-27
KZR141 Air Astana 1 2026-05-27
KZR139 Air Astana 1 2026-04-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KZR221 ALA → FRA May 30, 10:05 UTCMay 30, 14:55 UTC4h 50m
2026-05-28 KZR222 FRA → ALA May 28, 16:45 UTCMay 28, 20:35 UTC3h 50m
2026-05-27 KZR221 ALA → FRA May 27, 22:35 UTCMay 28, 15:05 UTC16h 30m
2026-05-27 KZR267 ALA → PEK May 27, 20:30 UTCMay 27, 20:45 UTC15m
2026-05-27 KZR142 TBS → ALA May 27, 10:50 UTCMay 27, 11:20 UTC30m
2026-05-27 KZR141 ALA → TBS May 27, 08:50 UTCMay 27, 09:30 UTC40m
2026-05-26 KZR664 SCO → ALA May 26, 17:30 UTCMay 26, 20:34 UTC3h 5m
2026-05-26 KZR663 SCO → LHR May 26, 10:14 UTCMay 26, 15:45 UTC5h 30m
2026-05-25 KZR663 SCO → LHR May 25, 20:15 UTCMay 26, 15:45 UTC19h 30m
2026-05-25 KZR663 SCO → LHR May 25, 17:35 UTCMay 26, 15:45 UTC22h 10m
2026-05-25 KZR663 SCO → LHR May 25, 16:40 UTCMay 26, 15:29 UTC22h 50m
2026-05-24 KZR221 ALA → FRA May 24, 19:35 UTCMay 25, 14:45 UTC19h 10m
2026-05-24 KZR221 ALA → FRA May 24, 17:35 UTCMay 25, 14:45 UTC21h 10m
2026-05-23 KZR663 SCO → LHR May 23, 19:55 UTCMay 24, 15:15 UTC19h 20m
2026-05-23 KZR663 SCO → LHR May 23, 17:35 UTCMay 24, 15:15 UTC21h 40m
2026-05-23 KZR663 SCO → LHR May 23, 16:50 UTCMay 24, 15:15 UTC22h 25m
2026-05-22 KZR221 ALA → FRA May 22, 19:35 UTCMay 23, 14:50 UTC19h 14m
2026-05-22 KZR664 SCO → ALA May 22, 18:20 UTCMay 23, 14:50 UTC20h 29m
2026-05-21 KZR663 SCO → LHR May 21, 23:30 UTCMay 22, 16:25 UTC16h 55m
2026-05-21 KZR663 SCO → LHR May 21, 18:00 UTCMay 22, 16:25 UTC22h 25m
2026-05-21 KZR932 BKK → ALA May 21, 05:35 UTCMay 21, 23:55 UTC18h 20m
2026-05-21 KZR932 BKK → ALA May 21, 04:55 UTCMay 21, 23:55 UTC19h 0m
2026-05-20 KZR931 ALA → BKK May 20, 21:45 UTCMay 21, 01:45 UTC4h 0m
2026-05-19 KZR931 ALA → BKK May 19, 23:45 UTCMay 20, 23:30 UTC23h 46m
2026-05-19 KZR282 PVG → ALA May 19, 17:45 UTCMay 20, 00:10 UTC6h 25m
2026-05-18 KZR912 IST → ALA May 18, 19:45 UTCMay 19, 18:05 UTC22h 20m
2026-05-18 KZR912 IST → ALA May 18, 18:45 UTCMay 18, 18:55 UTC10m
2026-05-18 KZR911 ALA → IST May 18, 16:55 UTCMay 18, 17:05 UTC10m
2026-05-17 KZR911 ALA → IST May 17, 21:35 UTCMay 18, 16:10 UTC18h 35m
2026-05-17 KZR664 SCO → ALA May 17, 19:35 UTCMay 18, 16:10 UTC20h 35m
2026-05-17 KZR664 SCO → ALA May 17, 17:35 UTCMay 18, 16:10 UTC22h 35m
2026-05-16 KZR663 SCO → LHR May 16, 20:35 UTCMay 17, 15:31 UTC18h 55m
2026-05-16 KZR663 SCO → LHR May 16, 17:35 UTCMay 17, 15:31 UTC21h 55m
2026-05-16 KZR663 SCO → LHR May 16, 16:45 UTCMay 17, 15:31 UTC22h 45m
2026-05-15 KZR221 ALA → FRA May 15, 19:35 UTCMay 16, 14:46 UTC19h 11m
2026-05-15 KZR221 ALA → FRA May 15, 18:30 UTCMay 16, 14:46 UTC20h 16m
2026-05-15 KZR663 SCO → LHR May 15, 11:10 UTCMay 15, 16:30 UTC5h 19m
2026-05-14 KZR932 BKK → ALA May 14, 03:35 UTCMay 14, 08:00 UTC4h 25m
2026-05-13 KZR931 ALA → BKK May 13, 05:40 UTCMay 14, 01:30 UTC19h 50m
2026-05-13 KZR931 ALA → BKK May 13, 03:35 UTCMay 14, 01:30 UTC21h 55m
2026-05-13 KZR931 ALA → BKK May 13, 02:15 UTCMay 14, 01:30 UTC23h 15m
2026-05-11 KZR222 FRA → ALA May 11, 17:15 UTCMay 11, 21:21 UTC4h 5m
2026-05-10 KZR221 ALA → FRA May 10, 19:35 UTCMay 11, 15:15 UTC19h 40m
2026-05-10 KZR221 ALA → FRA May 10, 17:34 UTCMay 11, 15:15 UTC21h 40m
2026-05-10 KZR663 SCO → LHR May 10, 10:00 UTCMay 10, 15:35 UTC5h 35m
2026-05-09 KZR663 SCO → LHR May 9, 19:35 UTCMay 10, 15:35 UTC20h 0m
2026-05-08 KZR193 ALA → CXR May 8, 21:35 UTCMay 9, 16:10 UTC18h 35m
2026-05-08 KZR193 ALA → CXR May 8, 19:35 UTCMay 9, 16:10 UTC20h 35m
2026-05-08 KZR193 ALA → CXR May 8, 05:35 UTCMay 8, 23:45 UTC18h 10m
2026-05-08 KZR193 ALA → CXR May 8, 04:19 UTCMay 8, 23:45 UTC19h 25m

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

Mode-S 4CAD1E frequently asked

What is Mode-S code 4CAD1E?
4CAD1E is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-KGH.
Where is Mode-S 4CAD1E registered?
Mode-S code 4CAD1E is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD1E broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD1E, octal 23126436, decimal 5,025,054.
What flights does 4CAD1E operate?
Mode-S 4CAD1E has broadcast 20 distinct callsigns, including KZR663, KZR221, KZR664, KZR193, KZR931.