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For a non-precision approach procedure, what will be produced when an additional margin is added to the OCH when considering the effects of operational factors?
  • A
    The decision altitude.
  • B
    The decision height.
  • C
    The minimum descent altitude.
  • D
    The minimum descent height.

ICAO Doc 8168
Chapter 1. Definitions

Decision altitude (DA) or decision height (DH). A specified altitude or height in the precision approach or approach with vertical guidance at which a missed approach must be initiated if the required visual reference to continue the approach has not been established.

Minimum descent altitude (MDA) or minimum descent height (MDH). A specified altitude or height in a nonprecision approach or circling approach below which descent must not be made without the required visual reference.

  • Circling approach (visual): minimum descent altitude or height (MDA / MDH)
  • Non-precision approach: minimum descent altitude or height (MDA / MDH)
  • Precision approach: decision altitude or height (DA / DH)
Tip for this question: Question asks "height" (OCH), there is only one answer with height => MDH.

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