L-1011-250     L-1011-500 TriStar
MLW            368,389              368,389   
V2               172                    166
Vat              145                    146
Vno/Mno      352              
Vmo/Mmo    375/0.90            375/0.90
Vne/Mne      0.95                  0.95
Max Cruise   518                   518
Max Alt        42,000'              42,000'
Long Range  483/FL330         486/FL330 

MLW = Maximum Landing Weight
MTO = Maximum Take-off Weight
V2  = Safe Climb-out speed (The speed after Vr, Rotation speed or Lift-off speed)
Vat = Landing speed at runway threshold Flap/Gear down (X-Plane @ 50'...25'...10')
Vapr= Approach Speed , just add 5-10kts to Vat with flap/gear down @ MLW or less
Vno = Normal Operating Speed
Vmo = Maximum Operating Speed
Vne = Never Exceed Speed
FL350  = Flight Level 35,000'

Thanks to Mohammed Gazzawi, Designer/Test Pilot MGXP