FMC V-Speeds
I am rated on the 757/767 and 744. I have worked with three different companies, and also as a simulator Instructor (TCI) and examiner (TCE) for Alteon (Boeing).
In every case we used the Runway Analysis Manual to determine the MTOGW or RTOGW, which is the term I prefer.
These weights are the lower of :
1. Corrected Runway Weight
2. Corrected Climb Limit Weight
3. Max Certificated (structural) T/O Weight
4. VMCG limit Weight
We then used the Actual Take Off Weight to obtain the V-Speeds calculated by the FMC and used these speeds.