EASA NAV(A)intermediate
41. Why might runway indicators change, for example from runway 06 to runway 07?
Answer
Magnetic variation changed
Explanation
Runway designators are based on magnetic direction rounded to the nearest ten degrees. A change in magnetic variation can alter the designator even if the physical alignment is unchanged. **Key takeaway:** Runway numbers reflect magnetic, not true, alignment. **Glossary:** Runway designator: two-digit magnetic direction rounded to tens of degrees.
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