Answer :
Final answer:
The 'L STRUT DCT LEAK EICAS' message along with the 'DUCT LEAK' light indicates a left-side air duct leak in the aircraft, which affects pressurization and requires immediate attention for safety.
Explanation:
The message 'L STRUT DCT LEAK EICAS' message and an illuminated 'DUCT LEAK' light on an aircraft's Electronic Centralized Aircraft Monitor (ECAM) or Engine Indicating and Crew Alerting System (EICAS) indicate that there is a leak in the left side air duct related to the strut or supporting structure of the aircraft.
This situation requires immediate attention, as duct leaks can affect pressurization and air distribution within the aircraft. Maintenance personnel should be notified to inspect and repair the problem to ensure the continued safety and operational integrity of the aircraft.
