Above Mean Sea Level: The distance above sea level, calculated with the current atmospheric pressure and can be read off of an altimeter. This is normally set on the ground by obtaining the current QNH or pressure for a specific area and can be changed while in flight if a new QNH is obtained.
Above Mean Sea Level: The distance above sea level, calculated with the current atmospheric pressure and can be read off of an altimeter. This is normally set on the ground by obtaining the current QNH or pressure for a specific area and can be changed while in flight if a new QNH is obtained.
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