EASA NAV(A)advanced
29. Given TC 183°, WCA +11°, MH 198°, CH 200°, find TH and variation.
Answer
TH 194°, VAR 4°W
Explanation
Adding the positive WCA to TC gives $TH=194°$. Comparing true and magnetic references gives 4° west variation under the bank convention. **Key takeaway:** Compute heading from course and WCA before converting references. **Glossary:** TH: true heading; VAR: magnetic variation.
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