Calculate Your Descent
To calculate your descent rate on a 3-degree glideslope, divide theindicated speed by two then add a zero at the end of the result. So 90 knotsgives 450 feet per minute.
Information For GA Pilots and Passengers
To calculate your descent rate on a 3-degree glideslope, divide theindicated speed by two then add a zero at the end of the result. So 90 knotsgives 450 feet per minute.