AvFacts #3: Cost Index




AvFacts - Aviation knowledge without limits show

Summary: When airline pilots decide how fast to fly, it all comes down to one number: the cost index. An airliner’s flight management computer (FMC) uses this number in a lot of ways to calculate climb speed, cruise speed, and descent speed. On this episode, we learn how cost index is calculated why airlines fly their planes at the speeds they do.