sensors Mode-S transponder

4CAC83

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HIJ · AGUSTA AW-169

Hex
4CAC83
Octal
23126203
Decimal
5,024,899
Country
IE
Tail
EI-HIJ
Type
A169
No current signal · last broadcast 10h ago
Flights observed
45
Distinct callsigns
2
Country
IE
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4CAC83.

Country allocation

The ICAO 24-bit address 4CAC83 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 2 distinct

Callsign Airline Flights Last seen
LID661 - 42 2026-06-05
LID701 - 3 2026-05-29

Recent flights last 45

DateFlightRouteTakeoffLandingDuration
2026-06-05 LID661 - Jun 5, 05:10 UTCJun 5, 05:25 UTC15m
2026-06-04 LID661 - Jun 4, 17:55 UTCJun 4, 18:10 UTC15m
2026-06-04 LID661 - Jun 4, 10:20 UTCJun 4, 10:35 UTC15m
2026-06-04 LID661 - Jun 4, 09:20 UTCJun 4, 09:35 UTC15m
2026-06-04 LID661 - Jun 4, 07:30 UTCJun 4, 08:45 UTC1h 15m
2026-06-03 LID661 - Jun 3, 13:40 UTCJun 3, 14:25 UTC45m
2026-06-02 LID661 - Jun 2, 16:20 UTCJun 2, 16:30 UTC10m
2026-06-02 LID661 - Jun 2, 15:40 UTCJun 2, 15:50 UTC10m
2026-06-02 LID661 - Jun 2, 13:00 UTCJun 2, 13:15 UTC15m
2026-06-02 LID661 - Jun 2, 11:15 UTCJun 2, 12:30 UTC1h 15m
2026-05-29 LID661 - May 29, 14:15 UTCMay 29, 14:25 UTC10m
2026-05-29 LID701 - May 29, 13:35 UTCMay 29, 13:45 UTC10m
2026-05-29 LID701 - May 29, 04:10 UTCMay 29, 04:25 UTC15m
2026-05-28 LID701 - May 28, 17:50 UTCMay 28, 18:15 UTC25m
2026-05-26 LID661 - May 26, 08:39 UTCMay 26, 08:50 UTC10m
2026-05-26 LID661 - May 26, 07:55 UTCMay 26, 08:04 UTC10m
2026-05-23 LID661 - May 23, 12:45 UTCMay 23, 13:30 UTC45m
2026-05-23 LID661 - May 23, 04:55 UTCMay 23, 05:10 UTC15m
2026-05-22 LID661 - May 22, 17:50 UTCMay 22, 18:05 UTC15m
2026-05-22 LID661 - May 22, 09:50 UTCMay 22, 10:35 UTC45m
2026-05-22 LID661 - May 22, 07:40 UTCMay 22, 08:35 UTC55m
2026-05-22 LID661 - May 22, 07:00 UTCMay 22, 07:10 UTC10m
2026-05-21 LID661 - May 21, 17:20 UTCMay 21, 18:00 UTC40m
2026-05-21 LID661 - May 21, 12:30 UTCMay 21, 13:10 UTC40m
2026-05-19 LID661 - May 19, 12:50 UTCMay 19, 13:00 UTC10m
2026-05-19 LID661 - May 19, 08:25 UTCMay 19, 09:10 UTC45m
2026-05-14 LID661 - May 14, 14:25 UTCMay 14, 14:50 UTC25m
2026-05-14 LID661 - May 14, 12:20 UTCMay 14, 12:40 UTC20m
2026-05-13 LID661 - May 13, 14:20 UTCMay 13, 15:05 UTC45m
2026-05-07 LID661 - May 7, 09:40 UTCMay 7, 09:50 UTC10m
2026-05-07 LID661 - May 7, 08:20 UTCMay 7, 08:50 UTC30m
2026-05-02 LID661 - May 2, 14:50 UTCMay 2, 15:30 UTC40m
2026-04-30 LID661 - Apr 30, 12:00 UTCApr 30, 12:10 UTC10m
2026-04-29 LID661 - Apr 29, 12:05 UTCApr 29, 12:55 UTC50m
2026-04-28 LID661 - Apr 28, 16:10 UTCApr 28, 16:40 UTC30m
2026-04-28 LID661 - Apr 28, 14:30 UTCApr 28, 15:20 UTC50m
2026-04-27 LID661 - Apr 27, 15:50 UTCApr 27, 16:35 UTC45m
2026-04-25 LID661 - Apr 25, 10:30 UTCApr 25, 10:40 UTC10m
2026-04-25 LID661 - Apr 25, 07:40 UTCApr 25, 09:20 UTC1h 40m
2026-04-25 LID661 - Apr 25, 06:50 UTCApr 25, 07:00 UTC10m
2026-04-21 LID661 - Apr 21, 09:20 UTCApr 21, 09:50 UTC30m
2026-04-21 LID661 - Apr 21, 07:30 UTCApr 21, 08:30 UTC1h 0m
2026-04-19 LID661 - Apr 19, 12:30 UTCApr 19, 13:10 UTC40m
2026-04-18 LID661 - Apr 18, 05:05 UTCApr 18, 05:15 UTC10m
2026-04-17 LID661 - Apr 17, 17:45 UTCApr 17, 18:00 UTC15m

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

Mode-S 4CAC83 frequently asked

What is Mode-S code 4CAC83?
4CAC83 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HIJ.
Where is Mode-S 4CAC83 registered?
Mode-S code 4CAC83 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC83 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 4CAC83, octal 23126203, decimal 5,024,899.
What flights does 4CAC83 operate?
Mode-S 4CAC83 has broadcast 2 distinct callsigns, including LID661, LID701.