The method to calculate Estimated Time Enroute (ETE) given a ground speed of 210 knots and a distance of 63 NM is what?

To calculate the Estimated Time Enroute (ETE), you can use the formula:

[ ETE = \frac{Distance}{Ground Speed}

]

In this scenario, the distance is 63 nautical miles (NM) and the ground speed is 210 knots.

First, convert the ground speed from knots into nautical miles per minute, knowing that there are 60 minutes in an hour: [ \text{Ground Speed in NM/min} = \frac{210 \text{ knots}}{60 \text{ minutes/hour}} = 3.5 \text{ NM/min} ]

Next, you can utilize this value to determine the time it will take to travel the 63 NM: [ ETE = \frac{63 \text{ NM}}{3.5 \text{ NM/min}} = 18 \text{ minutes} ]

Thus, the correct calculation confirms that the estimated time to cover the given distance at the specified ground speed is indeed 18 minutes.