EASA NAV(A)basic
What is the meaning of the 1:60 rule?
Answer
1 NM lateral offset at 1° drift after 60 NM
Explanation
The **1:60 rule** approximates small-angle geometry: a 1° track error creates about 1 NM of lateral displacement after 60 NM. It supports practical in-flight track correction. **Key takeaway:** Error in NM ≈ distance flown × angular error/60. **Glossary:** Track error: angular difference between desired and actual ground track.
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