Hi, I'm not 777 qualified - but on 747 400 the Max FL was based on 1.3g buffet margin. Provided there was no turbulence forecast, we used some QRH tables to "fudge" the FMS %Mac to provide 1.2g buffet margin which then allowed us to climb higher earlier.
Last edited by rudderrudderrat; 28th November 2009 at 14:24.
Reason: corrected typo boundary to margin