Navigation PPLintermediate
Which of the following statements correctly applies the 1:60 rule in aviation navigation?
Answer
An aircraft with a 1° track error will be displaced laterally by approximately 1 NM after flying 60 NM.
Explanation
The 1:60 rule estimates `$1$` NM off track per degree of error after `$60$` NM. The displacement scales with distance, so 1° over 30 NM is about 0.5 NM, not 2 NM. The listed unit conversions are standard planning approximations. **Key takeaway:** Scale the 1:60 estimate in proportion to distance. **Glossary:** **Track error**: angular difference between intended and actual ground track.
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