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Which facility associated with the ILS may be identified by a two-letter identification group?
  • A
    Locator.
  • B
    Inner marker.
  • C
    Glide path.
  • D
    Outer marker.
Locator beacons are low frequency (LF) or medium frequency (MF) NDBs, which are used in terminal areas. They are normally installed along the extended centreline of runways. Thus, an aircraft can follow a specific radial from a locator to position itself on its final approach to land.
  • Locators may be identified by 2 or 3 letter identification group.

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