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In aviation and aviation meteorology, a flight level (FL) is an aircraft's altitude at standard air pressure, expressed in hundreds of feet.
17 kwi 2015 · In other words, if you're on a North or East course (360 - 179), then use Odd thousands. By elimination, if you're on a South or West course (180 - 359), then use Even thousands.
Identifies the type of chart and the chart name and/or number. Table 1 – Chart title
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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.
To avoid mid-air collisions, aircraft fly at predefined altitudes known as flight levels. These flight levels are dependent on the atmospheric pressure and vary according to the weather conditions.
