Apparatus

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sensors Mode-S transponder

4CAC13

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAC13
Octal
23126023
Decimal
5,024,787
Country
IE
Tail
EI-KGD
Type
A21N
No current signal · last broadcast 19h ago
Flights observed
198
Distinct callsigns
20
Country
IE
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 4CAC13.

Country allocation

The ICAO 24-bit address 4CAC13 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
KZR921 Air Astana 19 2026-05-27
KZR563 - 19 2026-07-06
KZR911 Air Astana 18 2026-07-08
KZR931 - 14 2026-06-29
KZR564 - 13 2026-07-07
KZR922 Air Astana 9 2026-05-27
KZR932 - 7 2026-06-30
KZR585 Air Astana 7 2026-05-07
KZR645 Air Astana 6 2026-06-10
KZR912 - 5 2026-06-30
KZR572 - 5 2026-05-18
KZR934 Air Astana 4 2026-06-26
KZR913 - 4 2026-07-01
KZR604 Air Astana 4 2026-06-18
KZR586 Air Astana 4 2026-04-16
KZR267 Air Astana 4 2026-06-09
KZR914 Air Astana 3 2026-07-01
KZR8003 - 3 2026-07-08
KZR646 Air Astana 3 2026-06-11
KZR282 Air Astana 3 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KZR600 - Jul 13, 05:31 UTCJul 13, 22:30 UTC17h 0m
2026-07-13 KZR599 - Jul 13, 00:20 UTCJul 13, 22:30 UTC22h 10m
2026-07-10 KZR281 ALA → PVG Jul 10, 17:05 UTCJul 11, 00:10 UTC7h 5m
2026-07-09 KZR8004 LCA → ALA Jul 9, 08:50 UTCJul 9, 20:35 UTC11h 45m
2026-07-08 KZR8003 - Jul 8, 18:50 UTCJul 9, 07:05 UTC12h 15m
2026-07-08 KZR911 ALA → IST Jul 8, 16:50 UTCJul 8, 17:10 UTC20m
2026-07-07 KZR911 ALA → IST Jul 7, 23:25 UTCJul 8, 16:15 UTC16h 50m
2026-07-07 KZR911 ALA → IST Jul 7, 18:00 UTCJul 8, 16:15 UTC22h 15m
2026-07-07 KZR564 - Jul 7, 07:15 UTCJul 7, 23:55 UTC16h 40m
2026-07-06 KZR564 - Jul 6, 22:50 UTCJul 7, 18:15 UTC19h 25m
2026-07-06 KZR563 - Jul 6, 22:15 UTCJul 7, 18:15 UTC20h 0m
2026-07-06 KZR563 - Jul 6, 05:45 UTCJul 7, 00:45 UTC19h 0m
2026-07-06 KZR563 - Jul 6, 00:50 UTCJul 7, 00:45 UTC23h 55m
2026-07-05 KZR563 - Jul 5, 23:15 UTCJul 6, 22:45 UTC23h 30m
2026-07-05 KZR563 - Jul 5, 21:40 UTCJul 6, 08:05 UTC10h 25m
2026-07-05 KZR563 - Jul 5, 10:50 UTCJul 6, 08:05 UTC21h 15m
2026-07-05 KZR563 - Jul 5, 10:20 UTCJul 6, 08:05 UTC21h 45m
2026-07-04 KZR8003 - Jul 4, 18:45 UTCJul 5, 08:15 UTC13h 30m
2026-07-04 KZR911 ALA → IST Jul 4, 14:45 UTCJul 4, 17:05 UTC2h 20m
2026-07-03 KZR8238 - Jul 3, 02:50 UTCJul 3, 03:35 UTC45m
2026-07-03 KZR8237 - Jul 3, 00:35 UTCJul 3, 01:15 UTC40m
2026-07-01 KZR914 IST → ALA Jul 1, 10:50 UTCJul 1, 11:40 UTC50m
2026-07-01 KZR914 IST → ALA Jul 1, 09:40 UTCJul 1, 10:10 UTC30m
2026-07-01 KZR913 - Jul 1, 07:20 UTCJul 1, 07:45 UTC25m
2026-06-30 KZR912 - Jun 30, 19:15 UTCJul 1, 06:45 UTC11h 30m
2026-06-30 KZR911 ALA → IST Jun 30, 17:00 UTCJun 30, 17:25 UTC25m
2026-06-30 KZR932 - Jun 30, 03:45 UTCJun 30, 16:25 UTC12h 40m
2026-06-29 KZR931 - Jun 29, 06:50 UTCJun 30, 02:15 UTC19h 26m
2026-06-29 KZR931 - Jun 29, 05:59 UTCJun 30, 02:15 UTC20h 16m
2026-06-28 KZR564 - Jun 28, 22:49 UTCJun 29, 22:44 UTC23h 55m
2026-06-28 KZR563 - Jun 28, 21:50 UTCJun 29, 08:14 UTC10h 25m
2026-06-28 KZR563 - Jun 28, 06:49 UTCJun 29, 06:29 UTC23h 40m
2026-06-28 KZR564 - Jun 28, 04:50 UTCJun 29, 00:24 UTC19h 35m
2026-06-28 KZR563 - Jun 28, 00:50 UTCJun 29, 00:24 UTC23h 35m
2026-06-27 KZR563 - Jun 27, 22:49 UTCJun 28, 22:39 UTC23h 50m
2026-06-27 KZR563 - Jun 27, 21:34 UTCJun 28, 08:19 UTC10h 45m
2026-06-27 KZR564 - Jun 27, 08:49 UTCJun 28, 08:19 UTC23h 30m
2026-06-27 KZR564 - Jun 27, 06:50 UTCJun 28, 06:44 UTC23h 55m
2026-06-27 KZR563 - Jun 27, 05:49 UTCJun 28, 01:50 UTC20h 0m
2026-06-27 KZR563 - Jun 27, 00:50 UTCJun 28, 00:45 UTC23h 55m
2026-06-26 KZR563 - Jun 26, 22:49 UTCJun 27, 22:45 UTC23h 55m
2026-06-26 KZR564 - Jun 26, 14:50 UTCJun 27, 09:50 UTC19h 0m
2026-06-26 KZR934 BKK → ALA Jun 26, 12:50 UTCJun 27, 09:50 UTC21h 0m
2026-06-26 KZR934 BKK → ALA Jun 26, 12:39 UTCJun 27, 09:50 UTC21h 10m
2026-06-25 KZR933 ALA → BKK Jun 25, 18:59 UTCJun 26, 10:50 UTC15h 50m
2026-06-24 KZR911 ALA → IST Jun 24, 23:04 UTCJun 25, 17:25 UTC18h 20m
2026-06-24 KZR914 IST → ALA Jun 24, 09:24 UTCJun 25, 03:29 UTC18h 5m
2026-06-24 KZR913 ALA → IST Jun 24, 07:24 UTCJun 24, 07:44 UTC20m
2026-06-23 KZR912 IST → ALA Jun 23, 19:24 UTCJun 24, 06:45 UTC11h 20m
2026-06-23 KZR911 ALA → IST Jun 23, 17:25 UTCJun 23, 17:39 UTC15m

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

Mode-S 4CAC13 frequently asked

What is Mode-S code 4CAC13?
4CAC13 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-KGD.
Where is Mode-S 4CAC13 registered?
Mode-S code 4CAC13 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC13 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC13, octal 23126023, decimal 5,024,787.
What flights does 4CAC13 operate?
Mode-S 4CAC13 has broadcast 20 distinct callsigns, including KZR921, KZR563, KZR911, KZR931, KZR564.