• 35 minutes at cruise speed or 185 km (100 nm), whichever is the lesser, applicable to aircraft unable to comply with the engine inoperative requirements outlined in i) and ii) above.
Low Visibility Operations
The conduct of Category II or Category III approach operations and takeoffs in low visibility conditions.
M
MRB
See Maintenance Review Board. Mail
Dispatches of correspondence and other items tendered by and intended for delivery to postal services in accordance with the rules of the Universal Postal Union (UPU).
Magnetic Chip Detector (MCD)
A small screw in plug with magnet that is installed on an engine or accessory that collects iron-based metal particles from the oil within the engine or accessory.
Magnetic Particle Inspection (MPI)
Specific Non-Destructive Testing (NDT) method using magnetic particles as the medium. Magnetic Unreliability
See Areas of Magnetic Unreliability.
Maintenance
Those actions required for restoring or maintaining an aircraft, aircraft engine or aircraft component in an airworthy and serviceable condition, including repair, modification, overhaul, inspection, replacement, defect rectification and determination of condition.
Equivalent Terms: Aircraft Maintenance, Engine Maintenance, Component Maintenance Maintenance Control Centre (MCC)
Organisation’s department established to be the focal point for all maintenance related communications. Equivalent Terms: Maintenance Watch, Maintenance Scheduling
Maintenance Control Manual (MCM)
See Maintenance Management Manual (MMM) and Maintenance Procedures Manual (MPM). Maintenance Controller
The person (or persons) approved by the applicable authority to ensure maintenance of aircraft, engines and components is performed in a compliant manner.
Equivalent Terms: Postholder Maintenance Data
Means any information necessary to ensure the aircraft, aircraft engine or aircraft component can be maintained in a condition such that airworthiness of the aircraft, or serviceability of operational and emergency equipment as appropriate, is assured.
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