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Flight Level (FL) A surface of constant atmosphere pressure which is related to a specific pressure datum, 1013.2hPa, and is separated from other such surfaces by specific pressure intervals. Altitude above sea-level in 100 feet units measured according to a standard atmosphere.
25 sty 2024 · A flight level (FL) is a standard pressure altitude, expressed as three numbers. Aircraft flying on flight levels all measure their altitude from the same pressure setting, 1013.2 Hpa (or 29.92 InHg).
6 paź 2023 · Practically speaking, pressure altitude is the altitude you read on your altimeter when it is set to 29.92 Hg. More specifically, pressure altitude is the height above a Standard Datum Plane (SDP), which is a theoretical level where the air pressure equals 29.92 inches of mercury (Hg).
Flight level and standard pressure. A Flight Level (FL) is the vertical distance of an aircraft above the ISOBARIC SURFACE of 1013.25hPa (hecto Pascal) or 29.92 in Hg (inches of Mercury). An ISOBARIC SURFACE is the invisible landscape that connects all points with the same atmospheric pressure.
13 wrz 2022 · There are three pointers in such an instrument: a 100 ft pointer, a 1,000 ft pointer, and a 10,000 ft pointer. A simple pressure altimeter indicating an altitude of 10,200 ft. Photo: Bsayusd via Wikimedia. In modern aircraft, the altitude is given in digital displays.
In aviation and aviation meteorology, a flight level ( FL) is an aircraft's altitude at standard air pressure, expressed in hundreds of feet.
27 cze 2023 · One flight level is equivalent to 100 ft, i.e. FL 100 is 10 000 ft and FL 320 is 32 000 ft. Since the pressure lapse rate is approximately 1 hPa per 30 ft, the pressure altitude at an airfield can be easily determined if the QNH is known (see here for further details and a calculator).
