This function calculates the distance required to descend from the current altitude to a desired altitude, while descending at a specified rate of descent and flying with a specified groundspeed.

 

Inputs:

Groundspeed: 100 Kts

Indicated Altitude: 7,000 Ft

Target Altitude: 5,000 Ft

Rate of Descent: 500 Fpm

 

Outputs:

Top of Descent: 6.7 NM