EASA NAV(A)intermediate
Arrange the chronological steps to calculate an aircraft's Estimated Time of Arrival (ETA) given its departure time, distance to destination, and groundspeed.
Answer
Verify distance and groundspeed use compatible units (e.g., nautical miles and knots), Divide distance by groundspeed to calculate flight duration in decimal hours, Multiply the decimal portion of the hours by 60 to convert it to minutes, Add the flight duration in hours and minutes to the departure time
Explanation
Unit compatibility prevents errors: nautical miles paired with knots produce hours. Once time is calculated, convert the fractional hour to minutes and add the duration to the departure time. **Key takeaway:** Check units before computing ETA.\n\n**Glossary:** **Decimal hours**: time expressed as a fraction of an hour.
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