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sensors Mode-S transponder

4CAC7E

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-GRN · DIAMOND DA-42 Guardian

Hex
4CAC7E
Octal
23126176
Decimal
5,024,894
Country
IE
Tail
EI-GRN
Type
DA42
No current signal · last broadcast Jul 26, 18:55 UTC
Flights observed
347
Distinct callsigns
1
Country
IE
Last broadcast
Jul 26, 18:55 UTC

Last known position

Most recent position reported by Mode-S 4CAC7E.

Country allocation

The ICAO 24-bit address 4CAC7E 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 1 distinct

Callsign Airline Flights Last seen
N - 347 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N - Jul 26, 17:30 UTCJul 26, 18:55 UTC1h 25m
2026-07-26 N - Jul 26, 15:35 UTCJul 26, 16:50 UTC1h 15m
2026-07-25 N - Jul 25, 16:35 UTCJul 25, 17:40 UTC1h 5m
2026-07-25 N ORK → ORK Jul 25, 11:40 UTCJul 25, 15:00 UTC3h 20m
2026-07-25 N - Jul 25, 08:00 UTCJul 25, 10:30 UTC2h 30m
2026-07-25 N ORK → ORK Jul 25, 06:45 UTCJul 25, 07:30 UTC45m
2026-07-24 N - Jul 24, 17:00 UTCJul 24, 17:35 UTC35m
2026-07-24 N ORK → ORK Jul 24, 12:20 UTCJul 24, 16:00 UTC3h 40m
2026-07-24 N ORK → ORK Jul 24, 10:25 UTCJul 24, 11:25 UTC1h 0m
2026-07-24 N - Jul 24, 08:35 UTCJul 24, 09:35 UTC1h 0m
2026-07-24 N - Jul 24, 06:30 UTCJul 24, 07:20 UTC50m
2026-07-23 N - Jul 23, 21:15 UTCJul 23, 22:45 UTC1h 30m
2026-07-23 N ORK → ORK Jul 23, 19:30 UTCJul 23, 20:05 UTC35m
2026-07-23 N - Jul 23, 16:40 UTCJul 23, 17:30 UTC50m
2026-07-23 N - Jul 23, 15:05 UTCJul 23, 15:55 UTC50m
2026-07-23 N - Jul 23, 11:45 UTCJul 23, 12:35 UTC50m
2026-07-23 N - Jul 23, 08:35 UTCJul 23, 10:15 UTC1h 40m
2026-07-23 N ORK → ORK Jul 23, 06:30 UTCJul 23, 07:25 UTC55m
2026-07-22 N - Jul 22, 18:40 UTCJul 22, 19:30 UTC50m
2026-07-22 N - Jul 22, 15:25 UTCJul 22, 17:25 UTC2h 0m
2026-07-22 N ORK → ORK Jul 22, 11:50 UTCJul 22, 13:00 UTC1h 10m
2026-07-21 N - Jul 21, 20:15 UTCJul 21, 21:15 UTC1h 0m
2026-07-21 N ORK → ORK Jul 21, 18:45 UTCJul 21, 19:45 UTC1h 0m
2026-07-21 N - Jul 21, 16:20 UTCJul 21, 17:20 UTC1h 0m
2026-07-21 N - Jul 21, 14:45 UTCJul 21, 15:50 UTC1h 5m
2026-07-21 N - Jul 21, 12:45 UTCJul 21, 13:45 UTC1h 0m
2026-07-21 N - Jul 21, 10:20 UTCJul 21, 11:20 UTC1h 0m
2026-07-21 N ORK → ORK Jul 21, 08:15 UTCJul 21, 09:30 UTC1h 15m
2026-07-21 N ORK → ORK Jul 21, 05:50 UTCJul 21, 07:20 UTC1h 30m
2026-07-20 N - Jul 20, 11:40 UTCJul 20, 12:20 UTC40m
2026-07-18 N - Jul 18, 12:20 UTCJul 18, 14:45 UTC2h 25m
2026-07-18 N - Jul 18, 10:20 UTCJul 18, 11:05 UTC45m
2026-07-17 N - Jul 17, 17:44 UTCJul 17, 19:05 UTC1h 20m
2026-07-17 N - Jul 17, 14:55 UTCJul 17, 16:24 UTC1h 30m
2026-07-17 N - Jul 17, 11:55 UTCJul 17, 13:35 UTC1h 40m
2026-07-16 N - Jul 16, 21:00 UTCJul 16, 22:49 UTC1h 50m
2026-07-16 N ORK → ORK Jul 16, 19:30 UTCJul 16, 20:15 UTC45m
2026-07-16 N ORK → ORK Jul 16, 17:14 UTCJul 16, 18:29 UTC1h 15m
2026-07-16 N - Jul 16, 14:29 UTCJul 16, 15:35 UTC1h 5m
2026-07-16 N ORK → ORK Jul 16, 13:00 UTCJul 16, 13:49 UTC50m
2026-07-16 N - Jul 16, 11:45 UTCJul 16, 12:30 UTC45m
2026-07-16 N - Jul 16, 09:30 UTCJul 16, 10:20 UTC50m
2026-07-16 N - Jul 16, 06:20 UTCJul 16, 07:05 UTC45m
2026-07-15 N - Jul 15, 20:50 UTCJul 15, 22:05 UTC1h 15m
2026-07-15 N - Jul 15, 16:30 UTCJul 15, 19:50 UTC3h 20m
2026-07-15 N - Jul 15, 12:35 UTCJul 15, 13:30 UTC55m
2026-07-15 N - Jul 15, 10:35 UTCJul 15, 11:35 UTC1h 0m
2026-07-15 N - Jul 15, 07:55 UTCJul 15, 08:10 UTC15m
2026-07-10 N - Jul 10, 17:05 UTCJul 10, 17:45 UTC40m
2026-07-10 N ORK → ORK Jul 10, 15:10 UTCJul 10, 16:20 UTC1h 10m

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

Mode-S 4CAC7E frequently asked

What is Mode-S code 4CAC7E?
4CAC7E is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-GRN.
Where is Mode-S 4CAC7E registered?
Mode-S code 4CAC7E is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAC7E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAC7E, octal 23126176, decimal 5,024,894.
What flights does 4CAC7E operate?
Mode-S 4CAC7E has broadcast 1 distinct callsign, including N.