What does "MEL" refer to in the context of aircraft operations?

In the context of aircraft operations, "MEL" stands for Minimum Equipment List. This document is crucial because it specifies the instruments, equipment, and systems that must be operational for the aircraft to be deemed airworthy.

The MEL provides guidance on which systems and instruments can be inoperative and still allow for safe operation of the aircraft under certain conditions. For example, if a non-essential piece of equipment fails, the MEL will indicate whether the aircraft can continue its operation or if it must be grounded until repairs are made. The list is tailored to each specific aircraft type and is approved by aviation regulatory authorities to ensure safety and compliance.

This framework is critical for pilots and aircraft operators because it outlines the essential items necessary for flight safety and efficiency, ensuring that operations can continue without compromising safety standards.