Depends on the cost index. A low one will go for a higher level, getting you a smaller margin.
Inserting the winds actually complicates the aerodynamical / performance understanding as you're basically offering the airplane two different operating theatres. I.e. with less headwind in higher levels, the OPT figure will push further up into tighter margins.
Fly3: He's 4000 below the MAX, hence questioning if perhaps there should be a bit more than those 45 kt.
Last edited by FlightDetent; 14th October 2021 at 11:22.