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Which one of the following correctly lists the major ground based components of a Microwave Landing System (MLS)?
  • A
    Separate azimuth and elevation transmitters, outer and middle marker beacons
  • B
    Separate azimuth and elevation transmitters, DME facility
  • C
    Combined azimuth and elevation transmitter, DME facility
  • D
    Combined azimuth and elevation transmitter, outer and inner marker beacons

The Microwave Landing System (MLS) is a precision radio guidance system, that is used to guide the aircraft towards the runway. The principle works the same as an Instrument Landing System (ILS), it gives horizontal and vertical guidance to land in all weather conditions.

The system consists of several different parts:

  • Approach azimuth
  • Back azimuth
  • Elevation guidance
  • Range guidance (DMEP)
  • Data communications:

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