Under the 1:60 rule, what lateral displacement results from 1° of track error after 60 NM?

The 1:60 rule approximates the geometry of a small angular error: each degree of error produces about one unit of lateral displacement for every 60 units travelled. Thus, 1° after 60 NM gives about 1 NM off track. The rule is also used to estimate corrections needed to regain track.\n\n**Key takeaway:** At 60 NM, each degree of drift is about 1 NM of error.\n\n**Glossary:** **Track error**: lateral displacement from the planned ground path.