Fuel Rule of Thumb
Altitude off optimum = 2 × difference in Alt = xx % incr in fuel burn
eg. 10,000 = 2 × 10 = 20% incr in fuel burn
Altitude off optimum = 2 × difference in Alt = xx % incr in fuel burn
eg. 10,000 = 2 × 10 = 20% incr in fuel burn