I know there’s already an official post by IF on how to do this, but I’d like to show an easier method that users with less Theoretical knowledge may benefit from. it’s super easy!
If you know your time (ETI) to your destination and altitude to lose, then plug it into this formula!
Rate= ALT to lose or gain / ETI
Here’s a worked example:
If we are 25mins away from YMML at 7000’ what is our expected ROD?
Ans: 263’ FPM
- Altitude from airfield elevation
- / that height by time (ETI)
Hope you all enjoyed this intro!
(If I made any mistakes plz tell me)