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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".
Se denomina nivel de vuelo (FL (flight level) por sus siglas en inglés) a la altitud que vuela una aeronave calculada con respecto a la isobara 29:92 pulgadas de mercurio (101325 Newton/m² o Pa -1013,25 hectopascales), medida por el altímetro de a bordo, y que es la presión
While passing through the transition layer, vertical position is expressed in terms of flight levels when climbing and in terms of altitude when descending. Flight level zero is located at the atmospheric pressure level 1013.2 HPa (29.92 inches).
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).
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. For example, FL050 is the pressure surface 5,000 ft above the pressure surface 1,013.25 hPa.
Each flight level is started in three digits that represent hundreds of feet. For example, flight level 270 represents a pressure altitude of 27,000 ft with the altimeter set at 1013.2 hectopascals (29.92 in. of mercury).
Flight Level specifically refers to Pressure Altitude in 100 foot increments within the Standard Pressure Region, which in North America starts at 18000 ft and above, and at various lower altitudes elsewhere.
