Apparatus

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sensors Mode-S transponder

4CACA3

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HAE · ATR-72-600

Hex
4CACA3
Octal
23126243
Decimal
5,024,931
Country
IE
Tail
EI-HAE
Type
AT76
No current signal · last broadcast 18h ago
Flights observed
98
Distinct callsigns
20
Country
IE
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4CACA3.

Country allocation

The ICAO 24-bit address 4CACA3 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
ABR4337 - 17 2026-05-20
ABR7BS - 10 2026-05-20
ABR4257 - 10 2026-05-01
ABR2UC - 9 2026-07-13
ABR1UC - 9 2026-07-10
ABR6UE - 8 2026-07-09
ABR4UE - 7 2026-07-09
ABR4950 - 4 2026-04-15
ABR1PG - 4 2026-05-27
ABR8XP - 2 2026-06-01
ABR7XP - 2 2026-05-29
ABR7TS - 2 2026-07-16
ABR5YS - 2 2026-07-16
ABR4999 - 2 2026-06-30
ABR4332 - 2 2026-04-14
ABR4331 - 2 2026-07-15
ABR3LS - 2 2026-07-17
ABR2PG - 2 2026-05-27
ABR3CH - 1 2026-07-01
ABR2CH - 1 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 ABR3LS CDG → TLS Jul 17, 03:14 UTCJul 17, 04:44 UTC1h 30m
2026-07-16 ABR5YS - Jul 16, 19:50 UTCJul 16, 22:00 UTC2h 10m
2026-07-16 ABR5YS - Jul 16, 17:35 UTCJul 16, 18:44 UTC1h 10m
2026-07-16 ABR7TS CDG → TLS Jul 16, 02:45 UTCJul 16, 04:15 UTC1h 30m
2026-07-15 ABR4331 TLS → CDG Jul 15, 20:55 UTCJul 15, 22:25 UTC1h 30m
2026-07-15 ABR3LS - Jul 15, 03:00 UTCJul 15, 04:30 UTC1h 30m
2026-07-13 ABR2UC MUC → CDG Jul 13, 20:00 UTCJul 13, 22:05 UTC2h 5m
2026-07-10 ABR1UC - Jul 10, 02:25 UTCJul 10, 03:40 UTC1h 15m
2026-07-09 ABR4UE NUE → LGG Jul 9, 20:35 UTCJul 9, 21:40 UTC1h 5m
2026-07-09 ABR6UE - Jul 9, 02:05 UTCJul 9, 03:35 UTC1h 30m
2026-07-08 ABR4331 TLS → CDG Jul 8, 20:55 UTCJul 8, 22:25 UTC1h 30m
2026-07-08 ABR7TS - Jul 8, 03:00 UTCJul 8, 04:25 UTC1h 25m
2026-07-07 ABR2UC - Jul 7, 20:00 UTCJul 7, 21:50 UTC1h 50m
2026-07-07 ABR1UC - Jul 7, 02:25 UTCJul 7, 03:45 UTC1h 20m
2026-07-06 ABR4UE - Jul 6, 20:50 UTCJul 6, 22:00 UTC1h 10m
2026-07-03 ABR6UE CDG → NUE Jul 3, 02:15 UTCJul 3, 03:30 UTC1h 15m
2026-07-02 ABR2UC - Jul 2, 20:00 UTCJul 2, 21:45 UTC1h 45m
2026-07-02 ABR1UC - Jul 2, 02:25 UTCJul 2, 03:40 UTC1h 15m
2026-07-01 ABR3CH - Jul 1, 20:20 UTCJul 1, 22:00 UTC1h 40m
2026-07-01 ABR2CH - Jul 1, 01:35 UTCJul 1, 03:05 UTC1h 30m
2026-06-30 ABR4999 - Jun 30, 22:50 UTCJun 30, 23:55 UTC1h 5m
2026-06-26 ABR6UE - Jun 26, 02:09 UTCJun 26, 03:34 UTC1h 25m
2026-06-25 ABR2UC - Jun 25, 19:59 UTCJun 25, 22:10 UTC2h 10m
2026-06-25 ABR1UC LGG → MUC Jun 25, 02:19 UTCJun 25, 03:29 UTC1h 10m
2026-06-24 ABR4UE NUE → LGG Jun 24, 20:44 UTCJun 24, 21:54 UTC1h 10m
2026-06-24 ABR6UE - Jun 24, 02:05 UTCJun 24, 03:29 UTC1h 25m
2026-06-23 ABR2UC MUC → CDG Jun 23, 19:59 UTCJun 23, 21:59 UTC2h 0m
2026-06-23 ABR1UC - Jun 23, 02:24 UTCJun 23, 03:34 UTC1h 10m
2026-06-22 ABR4UE - Jun 22, 20:55 UTCJun 22, 22:05 UTC1h 10m
2026-06-19 ABR6UE CDG → NUE Jun 19, 02:19 UTCJun 19, 03:39 UTC1h 20m
2026-06-18 ABR2UC MUC → CDG Jun 18, 21:10 UTCJun 18, 23:05 UTC1h 55m
2026-06-18 ABR1UC LGG → MUC Jun 18, 02:15 UTCJun 18, 03:25 UTC1h 10m
2026-06-17 ABR4UE - Jun 17, 20:50 UTCJun 17, 21:55 UTC1h 5m
2026-06-17 ABR6UE - Jun 17, 02:00 UTCJun 17, 03:15 UTC1h 15m
2026-06-16 ABR2UC - Jun 16, 20:00 UTCJun 16, 21:50 UTC1h 50m
2026-06-12 ABR1UC LGG → MUC Jun 12, 02:20 UTCJun 12, 03:35 UTC1h 15m
2026-06-11 ABR4UE - Jun 11, 20:40 UTCJun 11, 21:55 UTC1h 15m
2026-06-11 ABR6UE - Jun 11, 02:10 UTCJun 11, 03:40 UTC1h 30m
2026-06-10 ABR2UC - Jun 10, 19:55 UTCJun 10, 21:45 UTC1h 50m
2026-06-10 ABR1UC LGG → MUC Jun 10, 02:25 UTCJun 10, 03:45 UTC1h 20m
2026-06-09 ABR4UE - Jun 9, 21:25 UTCJun 9, 21:50 UTC25m
2026-06-09 ABR6UE - Jun 9, 02:30 UTCJun 9, 03:50 UTC1h 20m
2026-06-08 ABR2UC - Jun 8, 20:00 UTCJun 8, 21:50 UTC1h 50m
2026-06-05 ABR1UC - Jun 5, 02:25 UTCJun 5, 03:45 UTC1h 20m
2026-06-01 ABR8XP - Jun 1, 21:35 UTCJun 1, 23:10 UTC1h 35m
2026-05-29 ABR7XP - May 29, 01:55 UTCMay 29, 03:35 UTC1h 40m
2026-05-28 ABR8XP MXP → LGG May 28, 21:40 UTCMay 28, 23:15 UTC1h 35m
2026-05-28 ABR7XP - May 28, 02:10 UTCMay 28, 03:50 UTC1h 40m
2026-05-27 ABR2PG - May 27, 20:20 UTCMay 27, 21:55 UTC1h 35m
2026-05-27 ABR1PG - May 27, 02:24 UTCMay 27, 03:54 UTC1h 30m

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

Mode-S 4CACA3 frequently asked

What is Mode-S code 4CACA3?
4CACA3 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HAE.
Where is Mode-S 4CACA3 registered?
Mode-S code 4CACA3 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CACA3 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CACA3, octal 23126243, decimal 5,024,931.
What flights does 4CACA3 operate?
Mode-S 4CACA3 has broadcast 20 distinct callsigns, including ABR4337, ABR7BS, ABR4257, ABR2UC, ABR1UC.