Apparatus

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sensors Mode-S transponder

4CAC64

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-AZC · BOEING 737-800

Hex
4CAC64
Octal
23126144
Decimal
5,024,868
Country
IE
Tail
EI-AZC
Type
B738
No current signal · last broadcast 1d ago
Flights observed
57
Distinct callsigns
6
Country
IE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4CAC64.

Country allocation

The ICAO 24-bit address 4CAC64 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 6 distinct

Callsign Airline Flights Last seen
ABR469 ASL Airlines Ireland 27 2026-05-28
ABR468 ASL Airlines Ireland 26 2026-05-28
ABR426 ASL Airlines Ireland 1 2026-05-22
ABR425 ASL Airlines Ireland 1 2026-05-22
ABR403 ASL Airlines Ireland 1 2026-04-19
ABR402 ASL Airlines Ireland 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 ABR468 LEJ → MXP May 28, 16:05 UTCMay 28, 17:15 UTC1h 10m
2026-05-28 ABR469 MXP → LEJ May 28, 11:50 UTCMay 28, 13:00 UTC1h 10m
2026-05-27 ABR468 LEJ → MXP May 27, 15:40 UTCMay 27, 16:50 UTC1h 10m
2026-05-27 ABR469 MXP → LEJ May 27, 11:25 UTCMay 27, 12:40 UTC1h 15m
2026-05-26 ABR468 LEJ → MXP May 26, 15:29 UTCMay 26, 16:40 UTC1h 10m
2026-05-26 ABR469 MXP → LEJ May 26, 11:34 UTCMay 26, 12:45 UTC1h 10m
2026-05-22 ABR426 LGG → MXP May 22, 12:20 UTCMay 22, 13:25 UTC1h 5m
2026-05-22 ABR425 MXP → LGG May 22, 09:35 UTCMay 22, 10:45 UTC1h 10m
2026-05-21 ABR468 LEJ → MXP May 21, 15:30 UTCMay 21, 16:45 UTC1h 15m
2026-05-21 ABR469 MXP → LEJ May 21, 11:30 UTCMay 21, 12:45 UTC1h 15m
2026-05-20 ABR468 LEJ → MXP May 20, 15:25 UTCMay 20, 16:40 UTC1h 15m
2026-05-20 ABR469 MXP → LEJ May 20, 11:20 UTCMay 20, 12:35 UTC1h 15m
2026-05-19 ABR468 LEJ → MXP May 19, 15:15 UTCMay 19, 16:30 UTC1h 15m
2026-05-19 ABR469 MXP → LEJ May 19, 11:20 UTCMay 19, 12:35 UTC1h 15m
2026-05-18 ABR468 LEJ → MXP May 18, 15:20 UTCMay 18, 16:40 UTC1h 20m
2026-05-18 ABR469 MXP → LEJ May 18, 11:25 UTCMay 18, 12:35 UTC1h 10m
2026-05-15 ABR468 LEJ → MXP May 15, 15:20 UTCMay 15, 16:35 UTC1h 15m
2026-05-12 ABR469 MXP → LEJ May 12, 11:30 UTCMay 12, 12:50 UTC1h 20m
2026-05-11 ABR468 LEJ → MXP May 11, 15:40 UTCMay 11, 16:55 UTC1h 15m
2026-05-11 ABR469 MXP → LEJ May 11, 10:40 UTCMay 11, 11:50 UTC1h 10m
2026-05-08 ABR468 LEJ → MXP May 8, 16:05 UTCMay 8, 17:20 UTC1h 15m
2026-05-08 ABR469 MXP → LEJ May 8, 11:49 UTCMay 8, 13:05 UTC1h 15m
2026-05-05 ABR468 LEJ → MXP May 5, 15:30 UTCMay 5, 16:50 UTC1h 20m
2026-05-05 ABR469 MXP → LEJ May 5, 11:20 UTCMay 5, 12:30 UTC1h 10m
2026-05-04 ABR468 LEJ → MXP May 4, 15:30 UTCMay 4, 17:00 UTC1h 30m
2026-05-04 ABR469 MXP → LEJ May 4, 11:30 UTCMay 4, 12:40 UTC1h 10m
2026-04-29 ABR468 LEJ → MXP Apr 29, 15:35 UTCApr 29, 16:45 UTC1h 10m
2026-04-29 ABR469 MXP → LEJ Apr 29, 11:40 UTCApr 29, 12:55 UTC1h 15m
2026-04-28 ABR468 LEJ → MXP Apr 28, 15:45 UTCApr 28, 17:00 UTC1h 15m
2026-04-28 ABR469 MXP → LEJ Apr 28, 11:40 UTCApr 28, 12:55 UTC1h 15m
2026-04-27 ABR468 LEJ → MXP Apr 27, 15:30 UTCApr 27, 16:45 UTC1h 15m
2026-04-27 ABR469 MXP → LEJ Apr 27, 11:20 UTCApr 27, 12:35 UTC1h 15m
2026-04-26 ABR468 LEJ → MXP Apr 26, 15:15 UTCApr 26, 16:25 UTC1h 10m
2026-04-26 ABR469 MXP → LEJ Apr 26, 11:45 UTCApr 26, 12:55 UTC1h 10m
2026-04-23 ABR468 HAJ → MXP Apr 23, 15:30 UTCApr 23, 16:45 UTC1h 15m
2026-04-23 ABR469 MXP → LEJ Apr 23, 11:20 UTCApr 23, 12:30 UTC1h 10m
2026-04-22 ABR468 HAJ → MXP Apr 22, 15:20 UTCApr 22, 16:35 UTC1h 15m
2026-04-22 ABR469 MXP → LEJ Apr 22, 11:30 UTCApr 22, 12:45 UTC1h 15m
2026-04-21 ABR468 HAJ → MXP Apr 21, 15:40 UTCApr 21, 16:55 UTC1h 15m
2026-04-21 ABR469 MXP → LEJ Apr 21, 11:35 UTCApr 21, 12:50 UTC1h 15m
2026-04-20 ABR468 - Apr 20, 15:40 UTCApr 20, 16:55 UTC1h 15m
2026-04-20 ABR402 MAD → LEJ Apr 20, 04:00 UTCApr 20, 06:25 UTC2h 25m
2026-04-19 ABR403 LEJ → MAD Apr 19, 23:00 UTCApr 20, 01:25 UTC2h 25m
2026-04-19 ABR469 MXP → LEJ Apr 19, 11:25 UTCApr 19, 12:50 UTC1h 25m
2026-04-17 ABR468 - Apr 17, 15:20 UTCApr 17, 16:30 UTC1h 10m
2026-04-17 ABR469 MXP → LEJ Apr 17, 11:30 UTCApr 17, 12:45 UTC1h 15m
2026-04-16 ABR468 - Apr 16, 15:25 UTCApr 16, 16:40 UTC1h 15m
2026-04-16 ABR469 MXP → LEJ Apr 16, 11:35 UTCApr 16, 12:55 UTC1h 20m
2026-04-15 ABR469 MXP → LEJ Apr 15, 11:15 UTCApr 15, 12:40 UTC1h 25m
2026-04-14 ABR468 - Apr 14, 15:20 UTCApr 14, 16:35 UTC1h 15m

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

Mode-S 4CAC64 frequently asked

What is Mode-S code 4CAC64?
4CAC64 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-AZC.
Where is Mode-S 4CAC64 registered?
Mode-S code 4CAC64 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC64 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC64, octal 23126144, decimal 5,024,868.
What flights does 4CAC64 operate?
Mode-S 4CAC64 has broadcast 6 distinct callsigns, including ABR469, ABR468, ABR426, ABR425, ABR403.