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- QNH abstract "QNH is one of the many Q codes. It is defined as, "barometric pressure adjusted to sea level." It is a pressure setting used by pilots, air traffic control (ATC), and low frequency weather beacons to refer to the barometric setting which, when set on an aircraft's altimeter, will cause the altimeter to read altitude above mean sea level within a certain defined region. Within United Kingdom airspace, these are known as Altimeter Setting Regions (ASRs); these regions may be large areas, or apply only to the airfield for which the QNH was given. An airfield QNH will cause the altimeter to show airfield altitude, that is, the altitude of the centre point of the main runway above sea level on landing, irrespective of the temperature. In the United Kingdom the lowest forecast value of QNH for an altimeter setting region is called the "Regional Pressure Setting" and may be used to ensure safe terrain separation when cruising at lower altitudes. In some parts of the world a similar procedure is adopted and this is known as "Regional QNH" however this name has been modified to the above in the UK to avoid ambiguity.".
- QNH wikiPageExternalLink cw.hfradio.org.
- QNH wikiPageExternalLink qcodes.php.
- QNH wikiPageID "315917".
- QNH wikiPageRevisionID "601259485".
- QNH hasPhotoCollection QNH.
- QNH subject Category:Aircraft_operations.
- QNH subject Category:Aviation_meteorology.
- QNH type Abstraction100002137.
- QNH type Action114006945.
- QNH type AircraftOperations.
- QNH type Attribute100024264.
- QNH type Operation114008806.
- QNH type State100024720.
- QNH comment "QNH is one of the many Q codes. It is defined as, "barometric pressure adjusted to sea level." It is a pressure setting used by pilots, air traffic control (ATC), and low frequency weather beacons to refer to the barometric setting which, when set on an aircraft's altimeter, will cause the altimeter to read altitude above mean sea level within a certain defined region.".
- QNH label "Barometrische Höhenmessung in der Luftfahrt".
- QNH label "QNH".
- QNH label "QNH".
- QNH label "QNH".
- QNH label "Regolaggio altimetrico".
- QNH label "压力高度".
- QNH label "高度計規正値".
- QNH sameAs Barometrische_Höhenmessung_in_der_Luftfahrt.
- QNH sameAs QNH.
- QNH sameAs Regolaggio_altimetrico.
- QNH sameAs 高度計規正値.
- QNH sameAs QNH.
- QNH sameAs m.01tv3f.
- QNH sameAs Q3233965.
- QNH sameAs Q3233965.
- QNH sameAs QNH.
- QNH wasDerivedFrom QNH?oldid=601259485.
- QNH isPrimaryTopicOf QNH.