×
Welcome to the CPL Navigation question and answer forum. Please feel free to post your questions but more importantly also suggest answers for your forum colleagues. Bob himself or one of the other tutors will get to your question as soon as we can.

Actually you must also allow for the fact that the climb starts at 1000 feet over the aerodrome. So the climb is from 2250 feet to 7500 feet = 5250 feet. You must climb through 5250 feet in the same time it takes to travel 36 nm at 90 kt = 24 min. 5250 feet in 24 minutes = 219 ft/min. The QNH of 1023 is not required in the calculation since both the elevation and the altitude are measured from sea level.