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Flight levels are usually designated in writing as FLxxx, where xxx is a two- or three-digit number indicating the pressure altitude in units of 100 feet (30 m). In radio communications, FL290 would be pronounced as "flight level two nine (r) zero".
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.
Flight level zero is located at the atmospheric pressure level 1013.2 HPa (29.92 inches). Consecutive flight levels are separated by a pressure interval corresponding to 500 ft (152.4 m) in the standard atmosphere. SUMINISTRO DE INFORMACIÓN SOBRE REGLAJE DE. ALTÍMETRO.
In order to separate air traffic and prevent collisions, aircraft in cruise flight fly at common pressure levels known as flight levels (abbreviated to FL). The flight levels correspond to the altitude in 100-ft increments (hectofeet) above the pressure surface of 1,013.25 hPa calculated according to the 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).
14 lis 2011 · Flight levels below FL100 are referred to as two digit numbers e.g. Climb flight level eight zero to reduce the risk of confusion with a heading instruction eg. heading zero eight zero.
30 paź 2020 · Flight levels shall be transmitted by pronouncing each digit separately except for the case of flight levels in whole hundreds. Example: Flight Level Two Hundred (instead of "Flight level two zero zero").
