Calculating a distance in TOD
Hello:
Can anyone please help me with the following?
I need to calculate the distance where I have to comence my descent from any given altitude, with a constant speed. I fly a MD 80 and I´m currently using the x3 factor. Altitude/1000 X 3. But this calcutation is based on a speed schedule of M0.76 and 290 KIAS.
what I want to know is where to star my descent is I´m going to do it at 250 Kias for example.
Thanks a lot
Nicolas