No probs Big Beres
Use 10% IAS +7 eg: 100kts = 17 AOB eg: 80kts = 15 AOB
this is a std rate one turn 360 degree in 2 min.
No not from a text book at least i dont think it is, its what we use and its spot on. cheers
Ps: just been and looked at the "identical thread" seems there is an actuall cal: but the above is simple rule of thumb and is very accurate. (but i guess you could use your scientific calculator while flying IFR couldnt you?
lol)