|Home A B C D E F G H I J K L M N O P Q R S T U V W X Y Z|
|Home Other Articles Aviation: What Is Altimetry?|
What Is Altimetry?
FUNDAMENTAL: The altimeter measures your height above the datum which you set on the sub scale.
There are 3 datum you can set:
QFE: Barometric pressure at aerodrome elevation.
Altimeter gives height above aerodrome.
(QFE = height AGL)
QNH: Barometric pressure at mean sea level.
Altimeter gives height above sea level (ALTITUDE)
[Remember, regional QNH is given by ATC and spot QNH by the tower.]
(QNH = height AMSL)
QNE: Standard Pressure - 1013.25 hPa
Altimeter gives pressure altitude (FLIGHT LEVEL)
(QNE = height above 1013.25 hPa)
Glossary References Links Contact