What is the purpose of the Minimum Equipment List (MEL)?

The Minimum Equipment List (MEL) serves the essential function of outlining the equipment that must be operational for a safe flight. It provides pilots and operators with a clear guideline on the minimum necessary items that should be functioning in order for the aircraft to be considered airworthy under specific conditions. This list is crucial as it allows for informed decision-making regarding the aircraft's status, enabling safe operation even when certain non-essential systems or equipment are inoperative.

The MEL is carefully developed based on specific aircraft criteria and regulatory standards, and using this list helps ensure that while some equipment may not be operational, the safety and operational integrity of the flight remain uncompromised. This understanding is pivotal for flight crews when assessing whether to proceed with a flight in light of technical issues.