EASA NAV(A)intermediate
Given TC 250°, distance 210 NM, TAS 130 kt, and a 15 kt headwind, with ETD 0915 UTC, what is ETA?
Answer
1105 UTC
Explanation
The approximate groundspeed is 130 − 15 = 115 kt. Time is 210/115 ≈ 1.83 hours, or about 1 h 50 min; adding this to 0915 gives approximately **1105 UTC**. **Key takeaway:** Subtract headwind from TAS before calculating time. **Glossary:** ETA: estimated time of arrival.
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