What does "MEL" stand for in aircraft operations?

The term "MEL" stands for Minimum Equipment List in aircraft operations. The Minimum Equipment List is a critical document that outlines the specific instruments, equipment, and systems that must be operational for an aircraft to be considered airworthy. It is tailored to the specific aircraft type and is approved by regulatory authorities.

The MEL allows operators to defer maintenance or discrepancies on non-essential equipment under certain conditions while still maintaining compliance with safety standards. This enables flexibility in operations and helps to minimize downtime, ensuring that minor failures do not ground the aircraft unnecessarily.

Understanding the MEL is essential for pilots and maintenance personnel, as it directly impacts flight planning, safety management, and regulatory compliance. It also indicates the procedures that must be followed if equipment is found inoperative before or during a flight.