What primary information does the MEL provide?

The Minimum Equipment List (MEL) provides essential information regarding acceptable inoperative equipment during flight. This list is crucial for pilots and maintenance personnel as it outlines which systems or components may be non-operational without rendering the aircraft unairworthy. The MEL ensures that safety is maintained by specifying conditions under which the aircraft can still be operated safely under defined limitations. This includes any required compensatory measures or operational restrictions when certain equipment is inoperative. Understanding the MEL is vital for compliance with regulatory requirements and for ensuring the aircraft operates safely, even if some systems are not functioning.

In contrast, the other options typically do not fall under the purview of the MEL. Performance metrics of the aircraft relate to its operational capabilities but are documented elsewhere. Pilot qualifications are important for ensuring that the crew is adequately trained and certified, but they are not detailed in the MEL. Weather conditions, while critical to flight planning and safety, are not addressed by the MEL as it focuses strictly on equipment status.