Glossary Papakupu

Explanations of abbreviations and acronyms.
All 1 A B C D E F G H I J K L M N O P Q R S T U V W Y

    M

    Magneto
    An engine-driven electrical generator that produces high voltage that forces a spark to jump across a spark plug gap in a cylinder. The engine is equipped with two magnetos; the engine’s right magneto has tachometer contact points that provide an engine RPM signal to the governor controller and engine tachometer.
    MAIIF
    Marine Accident Investigators’ International Forum (MAIIF) is an international non-profit organisation dedicated to the advancement of maritime safety and the prevention of marine pollution
    Main line
    In multiple-line areas, the up main line is generally used by rail traffic travelling in a northerly direction, whereas the down main line is used to travel in a southerly direction.
    Main rotor pitch change bearings
    Main rotor pitch change bearings, commonly referred to as spindle bearings.
    Manifest
    List of cargo passengers and crew carried by a vessel or aircraft
    Marshalling
    Yard process of sorting and arranging rail wagons into trains
    Master caution light
    A light on an instrument panel designed to gain a pilot’s attention and direction them to an area of concern.
    Master/pilot exchange
    A formal exchange of information between the master and the pilots on matters such as the ship’s characteristics, operational parameters and the pilots’ intended passage.
    Maximum weight
    Maximum weight is also known in New Zealand as the Maximum All Up Weight
    Mayday call
    A distress call via radio communications.
    MB
    Mechanics Bay Heliport (Auckland)
    MBB
    Messerschmitt-Bolkow-Blohm
    MBZ
    Mandatory Broadcast Zone
    MDF
    Medium-density fibreboard
    MeFlight
    A pilot weather briefing service supplied by MetService
    MEL
    MEL is Minimum Equipment List for an aircraft to remain operational.
    Metal road
    An unsealed or shingle road
    METAR
    Aviation routine weather report
    Metroliner
    A 19-seat twin-turboprop(ellor) aeroplane.
    MetService
    Meteorological Service of New Zealand.
    Minima
    Criteria used by pilots to determine if they can land or take-off from a runway. Consists of two parts: cloud base and visibility.
    Mis.88
    Name of form used by addressees to record details of track warrants
    MLW
    Maximum Landing Weight of an aircraft
    MONIM
    Met Office Night Illumination Model
    Mooring
    Securing a vessel to a fixed or floating object
    Morning civil twilight
    When the centre of the rising sun’s disc is 6 degrees (°) below the horizon. It is defined as the end of night in CARs Part 1 Definitions and Abbreviations
    MoT
    Ministry of Transport
    MPLS
    Multi-protocol label switching
    MSL
    Main South Line
    MTMVs
    Mobile Track Maintenance Vehicles are large self-propelled machines that travel along the rail line to conduct maintenance work.
    MTOC
    Maritime Transport Operator Certificate
    MTOP
    Maritime Transport Operator Plan
    MTOW
    Maximum Takeoff Weight of an aircraft
    Multiple Unit
    Train set with distributed traction across cars