Search results
In aviation and aviation meteorology, a flight level ( FL) is an aircraft's altitude at standard air pressure, expressed in hundreds of feet.
Flight levels use QNE or pressure altitude, while altitude references QNH or local pressure adjusted to sea level pressure. Altitudes are used at low levels and flight levels at higher levels. The transition between altitudes and flight levels differs by country and is generally just above the highest obstacle in that country.
Strictly speaking a flight level is an indication of pressure, not of altitude. Only above the transition level (which depends on the local QNH but is typically 4000 feet above sea level) are flight levels used to indicate altitude; below the transition level feet are used. e.g. FL250 = 25,000 feet above mean sea level when the pressure at sea ...
20 cze 2017 · Indicated Altitude is your altitude above Mean Sea Level (MSL) corrected for pressure variations at that location. Flight levels are a pressure altitude reading, that is a height above a standard datum (MSL at an ambient pressure of 29.92" Hg.).
13 cze 2020 · Flight Level is measured in imperial feet. Standard Metric Level is measured in metric meters. Either, whether represented in feet or meters, is the distance at which an aircraft flies above the atmospheric level of standard pressure (Pressure Altitude).
When flying at a flight level, the altimeter is always set to standard pressure (29.92 inHg or 1013.25 hPa). On the flight deck, the definitive instrument for measuring altitude is the pressure altimeter, which is an aneroid barometer with a front face indicating distance (feet or metres) instead of atmospheric pressure.
14 wrz 2023 · Flight Level. Flight level is a type of altitude used in aviation above a certain altitude, typically 18,000 feet above mean sea level. It is the altitude above the standard datum plane in 100-foot increments. Pilots use flight level instead of true altitude to reduce the number of altitude corrections required for atmospheric pressure changes.
