Apparatus

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sensors Mode-S transponder

4CACA2

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HAD · ATR-72-500

Hex
4CACA2
Octal
23126242
Decimal
5,024,930
Country
IE
Tail
EI-HAD
Type
AT75
No current signal · last broadcast 10h ago
Flights observed
81
Distinct callsigns
7
Country
IE
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4CACA2.

Country allocation

The ICAO 24-bit address 4CACA2 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 7 distinct

Callsign Airline Flights Last seen
ABR176 ASL Airlines Ireland 26 2026-05-28
ABR177 ASL Airlines Ireland 25 2026-05-29
ABV751 - 9 2026-04-19
ABV107 - 9 2026-04-17
ABV108 - 8 2026-04-17
ABV752 - 3 2026-04-19
ABR2356 - 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ABR177 MXP → LGG May 29, 23:15 UTCMay 30, 00:50 UTC1h 35m
2026-05-28 ABR176 LGG → MXP May 28, 19:25 UTCMay 28, 20:55 UTC1h 30m
2026-05-28 ABR177 MXP → LGG May 28, 00:00 UTCMay 28, 01:35 UTC1h 35m
2026-05-27 ABR176 LGG → MXP May 27, 19:15 UTCMay 27, 20:45 UTC1h 30m
2026-05-26 ABR177 MXP → LGG May 26, 23:19 UTCMay 27, 00:55 UTC1h 35m
2026-05-26 ABR176 LGG → MXP May 26, 19:25 UTCMay 26, 21:00 UTC1h 35m
2026-05-22 ABR177 MXP → LGG May 22, 23:30 UTCMay 23, 01:00 UTC1h 30m
2026-05-22 ABR176 LGG → MXP May 22, 19:25 UTCMay 22, 21:15 UTC1h 50m
2026-05-21 ABR177 MXP → LGG May 21, 23:20 UTCMay 22, 00:55 UTC1h 35m
2026-05-21 ABR176 LGG → MXP May 21, 19:20 UTCMay 21, 20:50 UTC1h 30m
2026-05-20 ABR177 MXP → LGG May 20, 23:35 UTCMay 21, 01:20 UTC1h 45m
2026-05-20 ABR176 LGG → MXP May 20, 19:30 UTCMay 20, 20:55 UTC1h 25m
2026-05-19 ABR177 MXP → LGG May 19, 23:25 UTCMay 20, 00:55 UTC1h 30m
2026-05-19 ABR176 LGG → MXP May 19, 19:20 UTCMay 19, 20:50 UTC1h 30m
2026-05-18 ABR177 MXP → LGG May 18, 23:15 UTCMay 19, 00:55 UTC1h 40m
2026-05-18 ABR176 LGG → MXP May 18, 19:25 UTCMay 18, 20:55 UTC1h 30m
2026-05-17 ABR177 MXP → LGG May 17, 23:25 UTCMay 18, 00:55 UTC1h 30m
2026-05-17 ABR176 LGG → MXP May 17, 19:20 UTCMay 17, 20:50 UTC1h 30m
2026-05-15 ABR177 MXP → LGG May 15, 23:15 UTCMay 16, 00:50 UTC1h 35m
2026-05-15 ABR176 LGG → MXP May 15, 19:20 UTCMay 15, 21:00 UTC1h 40m
2026-05-12 ABR177 MXP → LGG May 12, 23:01 UTCMay 13, 00:40 UTC1h 40m
2026-05-12 ABR176 LGG → MXP May 12, 19:15 UTCMay 12, 21:05 UTC1h 50m
2026-05-11 ABR176 LGG → MXP May 11, 19:20 UTCMay 11, 21:05 UTC1h 45m
2026-05-10 ABR177 MXP → LGG May 10, 23:35 UTCMay 11, 01:05 UTC1h 30m
2026-05-10 ABR176 LGG → MXP May 10, 19:19 UTCMay 10, 20:54 UTC1h 35m
2026-05-08 ABR177 MXP → LGG May 8, 23:10 UTCMay 9, 00:40 UTC1h 30m
2026-05-08 ABR176 LGG → MXP May 8, 19:30 UTCMay 8, 21:05 UTC1h 35m
2026-05-07 ABR177 MXP → LGG May 7, 23:09 UTCMay 8, 00:34 UTC1h 25m
2026-05-07 ABR176 LGG → MXP May 7, 19:20 UTCMay 7, 20:50 UTC1h 30m
2026-05-06 ABR177 MXP → LGG May 6, 23:05 UTCMay 7, 00:35 UTC1h 30m
2026-05-06 ABR176 LGG → MXP May 6, 19:15 UTCMay 6, 20:50 UTC1h 35m
2026-05-05 ABR177 MXP → LGG May 5, 23:15 UTCMay 6, 00:40 UTC1h 25m
2026-05-05 ABR176 LGG → MXP May 5, 19:20 UTCMay 5, 20:55 UTC1h 35m
2026-05-04 ABR177 MXP → LGG May 4, 23:05 UTCMay 5, 00:35 UTC1h 30m
2026-05-04 ABR176 LGG → MXP May 4, 19:35 UTCMay 4, 21:20 UTC1h 45m
2026-05-03 ABR177 MXP → LGG May 3, 23:15 UTCMay 4, 00:45 UTC1h 30m
2026-05-03 ABR176 LGG → MXP May 3, 19:15 UTCMay 3, 20:55 UTC1h 40m
2026-04-29 ABR177 MXP → LGG Apr 29, 23:05 UTCApr 30, 00:35 UTC1h 30m
2026-04-29 ABR176 LGG → MXP Apr 29, 19:25 UTCApr 29, 21:00 UTC1h 35m
2026-04-28 ABR177 MXP → LGG Apr 28, 23:05 UTCApr 29, 00:34 UTC1h 30m
2026-04-28 ABR176 LGG → MXP Apr 28, 19:40 UTCApr 28, 21:25 UTC1h 45m
2026-04-27 ABR177 MXP → LGG Apr 27, 23:05 UTCApr 28, 00:35 UTC1h 30m
2026-04-27 ABR176 LGG → MXP Apr 27, 19:45 UTCApr 27, 21:15 UTC1h 30m
2026-04-26 ABR177 MXP → LGG Apr 26, 23:20 UTCApr 27, 00:55 UTC1h 35m
2026-04-26 ABR176 LGG → MXP Apr 26, 19:40 UTCApr 26, 21:10 UTC1h 30m
2026-04-23 ABR177 MXP → LGG Apr 23, 23:05 UTCApr 24, 00:30 UTC1h 25m
2026-04-23 ABR176 LGG → MXP Apr 23, 19:20 UTCApr 23, 21:00 UTC1h 40m
2026-04-22 ABR177 MXP → LGG Apr 22, 23:05 UTCApr 23, 00:35 UTC1h 30m
2026-04-22 ABR176 LGG → MXP Apr 22, 19:40 UTCApr 22, 21:20 UTC1h 40m
2026-04-21 ABR177 MXP → LGG Apr 21, 23:10 UTCApr 22, 00:45 UTC1h 35m

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

Mode-S 4CACA2 frequently asked

What is Mode-S code 4CACA2?
4CACA2 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HAD.
Where is Mode-S 4CACA2 registered?
Mode-S code 4CACA2 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CACA2 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CACA2, octal 23126242, decimal 5,024,930.
What flights does 4CACA2 operate?
Mode-S 4CACA2 has broadcast 7 distinct callsigns, including ABR176, ABR177, ABV751, ABV107, ABV108.