Major Repair
A repair that: if incorrectly done, can affect weight, balance, structural strength, performance powerplant operations, flight characteristics, or other qualities affecting airworthiness; or is not done according to accepted practices; or cannot be done by Elementary Operations.

Management System
The collective body of managers and other associated managerial elements that provide for direction, oversight and control of an organisation

Mandatory Modification
A modification classified as compulsory by the applicable authority. See Modification (Maintenance).
Manoeuvre Tolerances (Flight)
The published and defined permissible range of deviation from published targets when conducting training manoeuvres in an aircraft or flight simulator, which incorporate an allowance for the specific characteristics of an aircraft or fidelity of a simulator