Marshaller
The person that performs aircraft marshalling during aircraft ground movement operations. See Aircraft Marshalling
Equivalent Terms: Signalman
Master Minimum Equipment List (MMEL)
A list established for a particular aircraft type by the organisation responsible for the type design with the type approval of the State of Design containing items, one or more of which is permitted to be unserviceable at the commencement of a flight. The MMEL may be associated with special operating conditions, limitations or procedures.
Equivalent Terms: List of Acceptable Malfunctions (Russian built aircraft) Minimum Equipment List (MEL)
A list that provides for the operation of an aircraft, subject to specified conditions, with particular equipment inoperative, prepared by an Operator, and approved by the Authority, in conformity with, or more restrictive than, the MMEL established for the aircraft type.
Equivalent Terms: List of Acceptable Malfunctions (Russian built aircraft) Minimum En-route Altitude (MEA)
The altitude for an en-route segment of flight that provides adequate reception of relevant navigation facilities and ATS communications, complies with the airspace structure and provides the required obstacle clearance.
Minimum Obstacle Clearance Altitude (MOCA)
The minimum altitude for a defined segment of flight that provides the required obstacle clearance. Minimum Navigation Performance Specifications (MNPS)
Procedural and equipment requirements specified for the conduct of flight operations in certain defined airspace.
Minor Alteration
Any alteration that is not classified as a Major Alteration.
Equivalent Terms: Minor Modification

Minor Modification
Any modification that is not classified as a Major Modification. Equivalent Terms: Minor Alteration

Minor Repair
Any repair that is not classified as a Major Repair. Mishandled Baggage
Checked baggage that has been involuntarily or inadvertently separated from passengers or crew members.