Master Minimum Equipment List (MMEL)

The MMEL contains a list of equipment and instruments that may be inoperative on a specific type of aircraft. It is also the basis for the development of an individual operator’s MEL. The MMEL is the regulatory authority’s (i.e., FAA’s or EASA’s) document from which the operator’s MEL manuals must be created. Each certified aircraft typically has its own MMEL.