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The setting 1013.25 hectopascals is known as

  • A.QNE, giving pressure altitude
  • B.QNH, giving height above sea level
  • C.QFE, giving height above the field
  • D.QDM, giving magnetic bearing

Answer: A

Above the transition altitude every aircraft sets the same standard datum, so their indications are mutually consistent even if none is a true height. Flight levels are separations in that common reference rather than heights above the ground.

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