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 14h ago
Flights observed
114
Distinct callsigns
11
Country
IE
Last broadcast
14h 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 11 distinct

Callsign Airline Flights Last seen
ABR469 - 44 2026-07-13
ABR468 ASL Airlines Ireland 43 2026-07-12
ABR403 - 6 2026-07-07
ABR402 - 6 2026-07-08
ABR426 ASL Airlines Ireland 3 2026-07-02
ABR425 - 3 2026-07-02
ABR294 - 3 2026-06-03
ABR291 - 3 2026-06-03
ABR421 - 1 2026-06-03
ABR420 - 1 2026-06-01
ABR2303 - 1 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ABR469 MXP → HAJ Jul 13, 11:20 UTCJul 13, 12:40 UTC1h 20m
2026-07-12 ABR468 LEJ → MXP Jul 12, 15:40 UTCJul 12, 16:55 UTC1h 15m
2026-07-12 ABR469 MXP → HAJ Jul 12, 11:25 UTCJul 12, 12:40 UTC1h 15m
2026-07-10 ABR468 LEJ → MXP Jul 10, 15:25 UTCJul 10, 16:55 UTC1h 30m
2026-07-10 ABR469 MXP → HAJ Jul 10, 11:25 UTCJul 10, 12:55 UTC1h 30m
2026-07-09 ABR468 LEJ → MXP Jul 9, 15:20 UTCJul 9, 16:35 UTC1h 15m
2026-07-09 ABR469 MXP → HAJ Jul 9, 11:15 UTCJul 9, 12:50 UTC1h 35m
2026-07-08 ABR468 LEJ → MXP Jul 8, 15:20 UTCJul 8, 16:30 UTC1h 10m
2026-07-08 ABR402 - Jul 8, 04:40 UTCJul 8, 07:05 UTC2h 25m
2026-07-07 ABR403 HAJ → MAD Jul 7, 23:05 UTCJul 8, 01:25 UTC2h 20m
2026-07-07 ABR469 MXP → HAJ Jul 7, 11:45 UTCJul 7, 13:05 UTC1h 20m
2026-07-06 ABR468 LEJ → MXP Jul 6, 15:20 UTCJul 6, 16:40 UTC1h 20m
2026-07-06 ABR469 MXP → HAJ Jul 6, 11:20 UTCJul 6, 12:40 UTC1h 20m
2026-07-02 ABR426 LGG → MXP Jul 2, 15:00 UTCJul 2, 16:00 UTC1h 0m
2026-07-02 ABR425 - Jul 2, 12:30 UTCJul 2, 13:40 UTC1h 10m
2026-06-29 ABR468 LEJ → MXP Jun 29, 16:00 UTCJun 29, 17:14 UTC1h 15m
2026-06-29 ABR402 - Jun 29, 03:49 UTCJun 29, 05:59 UTC2h 10m
2026-06-28 ABR403 - Jun 28, 22:55 UTCJun 29, 01:25 UTC2h 30m
2026-06-28 ABR2303 MXP → HAJ Jun 28, 18:29 UTCJun 28, 19:40 UTC1h 10m
2026-06-24 ABR468 LEJ → MXP Jun 24, 15:29 UTCJun 24, 16:54 UTC1h 25m
2026-06-24 ABR402 - Jun 24, 03:50 UTCJun 24, 06:04 UTC2h 15m
2026-06-23 ABR403 HAJ → MAD Jun 23, 23:00 UTCJun 24, 01:14 UTC2h 15m
2026-06-23 ABR469 MXP → HAJ Jun 23, 11:29 UTCJun 23, 12:49 UTC1h 20m
2026-06-22 ABR468 LEJ → MXP Jun 22, 16:10 UTCJun 22, 17:25 UTC1h 15m
2026-06-22 ABR402 MAD → HAJ Jun 22, 04:04 UTCJun 22, 06:25 UTC2h 20m
2026-06-21 ABR403 HAJ → MAD Jun 21, 23:14 UTCJun 22, 01:29 UTC2h 15m
2026-06-21 ABR469 MXP → HAJ Jun 21, 11:49 UTCJun 21, 13:00 UTC1h 10m
2026-06-19 ABR468 LEJ → MXP Jun 19, 16:39 UTCJun 19, 18:05 UTC1h 25m
2026-06-19 ABR469 MXP → HAJ Jun 19, 11:24 UTCJun 19, 12:34 UTC1h 10m
2026-06-16 ABR468 LEJ → MXP Jun 16, 15:24 UTCJun 16, 16:39 UTC1h 15m
2026-06-16 ABR469 MXP → HAJ Jun 16, 11:30 UTCJun 16, 12:50 UTC1h 20m
2026-06-15 ABR468 LEJ → MXP Jun 15, 15:40 UTCJun 15, 16:55 UTC1h 15m
2026-06-15 ABR469 MXP → HAJ Jun 15, 11:30 UTCJun 15, 12:49 UTC1h 20m
2026-06-14 ABR468 LEJ → MXP Jun 14, 15:20 UTCJun 14, 16:35 UTC1h 15m
2026-06-14 ABR469 MXP → HAJ Jun 14, 11:35 UTCJun 14, 12:50 UTC1h 15m
2026-06-12 ABR426 LGG → MXP Jun 12, 14:40 UTCJun 12, 15:35 UTC55m
2026-06-12 ABR425 MXP → LGG Jun 12, 12:05 UTCJun 12, 13:10 UTC1h 5m
2026-06-11 ABR468 LEJ → MXP Jun 11, 15:30 UTCJun 11, 16:40 UTC1h 10m
2026-06-11 ABR469 MXP → LEJ Jun 11, 11:25 UTCJun 11, 12:55 UTC1h 30m
2026-06-10 ABR468 LEJ → MXP Jun 10, 15:50 UTCJun 10, 17:15 UTC1h 25m
2026-06-10 ABR469 MXP → LEJ Jun 10, 11:30 UTCJun 10, 12:35 UTC1h 5m
2026-06-09 ABR468 LEJ → MXP Jun 9, 15:35 UTCJun 9, 17:30 UTC1h 55m
2026-06-09 ABR402 MAD → LEJ Jun 9, 04:15 UTCJun 9, 06:30 UTC2h 15m
2026-06-08 ABR403 LEJ → MAD Jun 8, 22:55 UTCJun 9, 01:25 UTC2h 30m
2026-06-08 ABR469 MXP → LEJ Jun 8, 11:25 UTCJun 8, 12:35 UTC1h 10m
2026-06-07 ABR468 LEJ → MXP Jun 7, 15:20 UTCJun 7, 16:30 UTC1h 10m
2026-06-07 ABR469 MXP → LEJ Jun 7, 11:20 UTCJun 7, 12:35 UTC1h 15m
2026-06-03 ABR421 - Jun 3, 18:20 UTCJun 3, 19:30 UTC1h 10m
2026-06-03 ABR294 LEJ → BCN Jun 3, 13:50 UTCJun 3, 15:45 UTC1h 55m
2026-06-03 ABR291 BCN → LEJ Jun 3, 09:40 UTCJun 3, 11:45 UTC2h 5m

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 14h 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 11 distinct callsigns, including ABR469, ABR468, ABR403, ABR402, ABR426.