777-200 Er
 

Can some one tell me the V speeds for the above a/c at a TOW of 630,000lbs Sea level ISA Temp, still air?
Also what is the source for the two ASI and standby presentaions?
Thanks

Flaps 15, 30°C, Sea Level, Still Air, 630,000lbs
V1 143, Vr 158, V2 164

6 ADMs (Air Data Module) via ARINC 629 bus to the ADIRU and SAARU.
2 SADMs (Standby Air Data Module) via ARINC 429 to Standby Instruments.

SR

Thanks, So it would be virtually impossible for all 3 displays to fail and show say 80kts ?

that's what boeing would say :)