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A false glide slope may be encountered

  • A.Above the true glide path, at roughly twice the angle
  • B.Below the true glide path
  • C.Only outside the localiser coverage
  • D.Only in heavy precipitation

Answer: A

The antenna pattern produces additional lobes, the first of which lies near six degrees and gives a correct-looking indication at a much steeper angle. Cross-checking altitude against distance at the outer marker or a fix is what detects it.

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