Mach number L1011
Stilton, you are "on the same tram" as me. I wrote that Max Continuous Mach, or Mmo was Mo.90 and that Max Operating or Mne was Mo.95. In practice most operators cruised at lower Mach to conserve fuel, around M0.84. If my recollection is correct, and that may be debated, the company Mne was M0.89 or thereabouts. I never operated the Convair 880 however they were renowned as a very fast aircraft, if if you could afford the fuel burn.