What is the correct course of action if a maintenance discrepancy is found and the item is deferred under the MEL?

When a maintenance discrepancy is identified and the item is deferred under the Minimum Equipment List (MEL), the correct course of action is to depart once released by the Maintenance Duty Manager. This is because the MEL contains specific items that can be deferred, allowing the aircraft to operate safely despite certain discrepancies. The Maintenance Duty Manager is responsible for assessing the situation and ensuring that the aircraft is still compliant with safety regulations and operational standards. Once they give the clearance, the flight crew can proceed with confidence that the aircraft is suitable for departure, prioritizing safety while adhering to established protocols.

The other actions, such as waiting for further instructions, canceling the flight, or notifying passengers about potential delays, do not align with the standard operational procedures once the Maintenance Duty Manager has deemed the aircraft fit for flight.