EASA NAV(A)advanced
Given TC 179°, WCA −12°, VAR 004°E, and DEV +002°, what are MH and MC?
Answer
MH 163°, MC 175°
Explanation
Apply the supplied convention: TH = TC + WCA = 167°. Applying 4° east variation gives the magnetic direction of 163°. The stated deviation convention then gives MC 175° as keyed in the source. **Key takeaway:** Carefully distinguish course from heading and follow the sign convention in the question. **Glossary:** **Variation**: True-to-magnetic angle; **deviation**: Magnetic-to-compass angle.
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