::Flight level

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Flight::altitude    Level::levels    Aircraft::pressure    Above::rules    Track::metres    Track::airspace

{{ safesubst:#invoke:Unsubst||$N=Use dmy dates |date=__DATE__ |$B= }} A flight level (FL) is specific barometric pressure, expressed as a nominal altitude in hundreds of feet. The pressure is computed assuming an International standard sea-level pressure datum of 1013.25 hPa (29.92 inHg), and therefore is not necessarily the same as the aircraft's true altitude either above mean sea level or above ground level.


Flight level sections
Intro  Background   Definition   Transition altitude  Quadrantal rule  Semicircular/hemispheric rule  Reduced vertical separation minima  Metric flight levels  Flight levels in Russian Federation  See also  References  

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