1 in 60 rule

Rule of thumb used in aviation

In air navigation, the 1 in 60 rule is a rule of thumb which states that if a pilot has traveled sixty miles then an error in track of one mile is approximately a 1° error in heading, and proportionately more for larger errors. The rule is used by pilots with many other tasks to perform, often in a basic aircraft without the aid of an autopilot, who need a simple process that can be performed in their heads. This rule is also used by air traffic controllers to quickly determine how much to turn an aircraft for separation purposes.

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