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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".
The Flight Level is written using the two letters FL with the altitude (at standard QNH) in feet, without the two digits at the end: 10000 feet becomes Flight Level 100 = FL100; 6500 feet becomes Flight Level 65 = FL65; Commonly, the standard altimeter setting is used worldwide at or above the transition level (TL). ¶ Isobaric surface curve
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). This is based on the principle of something called the International Standard Atmosphere.
visual and instrument flight, including training, planning, departure, en route (for low and high altitudes), approaches and movement at an aerodrome. 2 SCOPE This guide covers depiction and description of the topographic, cultural, and aeronautical data elements shown on the following chart types: • En Route Chart High (ERCH)
FL180 and FL300 stand for Flight Level 180 and Fight Level 300. Flight levels are spaced 100ft apart on an altimeter that is set to the standard sea level pressure (QNE) of 1013.25 hectopascals or 29.92 inches of Mercury. So indeed, FL300 means 30,000 ft.
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.
28 gru 2023 · True altitude is the vertical distance of your airplane above sea level. Commonly expressed as "feet MSL" (feet above mean sea level), many of the airspace altitudes, terrain figures, airways, and obstacles you'll find on aeronautical charts are expressed in true altitude (MSL), feet above sea level. Boldmethod. 5) Absolute Altitude.
