What is the 60 to 1 rule for pilots?

The 1 in 60 rule is a simplified way to calculate an aircraft's drift angle in flight. If an aircraft has drifted 1 nm. off track after 60 nm's, its drift angle is 1?.



The 60 to 1 rule is a fundamental aviation "rule of thumb" used for navigation and flight path adjustments. It states that at a distance of 60 nautical miles (NM), an error of 1 degree in heading results in being 1 NM off course. This mathematical shortcut allows pilots to make quick mental calculations without complex instruments. For example, if a pilot is 2 miles off track after flying 60 miles, they know they have a 2-degree error. The rule also applies vertically: a 1-degree pitch change results in a 100-foot altitude change per 1 NM. In 2026, while modern GPS and autopilots handle these calculations, the rule remains a critical "sanity check" taught to all pilots to ensure they can maintain situational awareness and make small, early corrections before a minor error turns into a significant deviation from their intended flight path.

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