I use the first method to calculate my TOD plus 1nm for each 10 knots to decelerate to 210 kts. During descent, I follow up the progress with distance to go times 3 and subtract 1000 ft if at 250 kts and 2000 ft if at 300 kts i.e at 60 miles to go at 300 kts my optimum altitude would be (60x3)-2000=16.000 ft.
Last edited by Banana Joe; 4th Aug 2019 at 20:56.