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 Jul 26, 20:50 UTC
Flights observed
226
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 20:50 UTC

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
KZR563 Air Astana 29 2026-07-25
KZR911 Air Astana 20 2026-07-15
KZR921 Air Astana 19 2026-05-27
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
KZR912 Air Astana 6 2026-07-26
KZR645 Air Astana 6 2026-06-10
KZR604 - 6 2026-07-23
KZR572 - 5 2026-05-18
KZR556 - 5 2026-07-17
KZR934 Air Astana 4 2026-06-26
KZR913 - 4 2026-07-01
KZR8003 - 4 2026-07-15
KZR603 Air Astana 4 2026-07-22
KZR586 Air Astana 4 2026-04-16
KZR267 Air Astana 4 2026-06-09
KZR194 - 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KZR912 IST → ALA Jul 26, 19:00 UTCJul 26, 20:50 UTC1h 50m
2026-07-25 KZR563 ALA → HKT Jul 25, 22:55 UTCJul 26, 17:15 UTC18h 21m
2026-07-25 KZR563 ALA → HKT Jul 25, 21:25 UTCJul 26, 17:15 UTC19h 51m
2026-07-24 KZR281 ALA → PVG Jul 24, 16:40 UTCJul 24, 22:30 UTC5h 50m
2026-07-24 KZR281 ALA → PVG Jul 24, 00:15 UTCJul 24, 22:30 UTC22h 15m
2026-07-23 KZR604 - Jul 23, 07:40 UTCJul 24, 00:40 UTC17h 0m
2026-07-23 KZR604 - Jul 23, 01:10 UTCJul 24, 00:40 UTC23h 30m
2026-07-22 KZR603 ALA → HKT Jul 22, 23:35 UTCJul 23, 10:05 UTC10h 30m
2026-07-22 KZR603 ALA → HKT Jul 22, 04:50 UTCJul 23, 02:00 UTC21h 10m
2026-07-22 KZR603 ALA → HKT Jul 22, 04:30 UTCJul 23, 02:00 UTC21h 30m
2026-07-22 KZR563 ALA → HKT Jul 22, 00:50 UTCJul 23, 00:40 UTC23h 50m
2026-07-21 KZR563 ALA → HKT Jul 21, 21:40 UTCJul 22, 05:25 UTC7h 45m
2026-07-21 KZR563 ALA → HKT Jul 21, 09:00 UTCJul 22, 05:25 UTC20h 25m
2026-07-21 KZR563 ALA → HKT Jul 21, 06:50 UTCJul 22, 05:25 UTC22h 35m
2026-07-21 KZR563 ALA → HKT Jul 21, 06:30 UTCJul 22, 04:45 UTC22h 15m
2026-07-21 KZR563 ALA → HKT Jul 21, 00:50 UTCJul 22, 00:45 UTC23h 55m
2026-07-20 KZR563 ALA → HKT Jul 20, 22:50 UTCJul 21, 22:40 UTC23h 50m
2026-07-20 KZR563 ALA → HKT Jul 20, 22:15 UTCJul 21, 10:00 UTC11h 44m
2026-07-17 KZR194 - Jul 17, 22:05 UTCJul 18, 07:15 UTC9h 11m
2026-07-17 KZR194 - Jul 17, 11:55 UTCJul 18, 07:15 UTC19h 21m
2026-07-17 KZR194 - Jul 17, 09:20 UTCJul 18, 07:15 UTC21h 56m
2026-07-17 KZR556 - Jul 17, 04:49 UTCJul 18, 04:45 UTC23h 56m
2026-07-17 KZR556 - Jul 17, 02:50 UTCJul 17, 22:15 UTC19h 25m
2026-07-17 KZR556 - Jul 17, 02:05 UTCJul 17, 22:15 UTC20h 10m
2026-07-16 KZR555 - Jul 16, 08:50 UTCJul 17, 05:10 UTC20h 20m
2026-07-15 KZR8003 - Jul 15, 19:10 UTCJul 16, 07:10 UTC12h 0m
2026-07-15 KZR911 ALA → IST Jul 15, 17:00 UTCJul 15, 17:20 UTC20m
2026-07-14 KZR911 ALA → IST Jul 14, 22:20 UTCJul 15, 16:30 UTC18h 9m
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

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 Jul 26, 20:50 UTC.
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 KZR563, KZR911, KZR921, KZR931, KZR564.