ASRAAM
Gentlemen,
Setting aside this particular incident there is a fair amount of rubbish being talked on this thread about 777 take off performance.
When V1 is determined for a particular take off it will always be safe to go above this speed following an engine failure and it will always be safe to stop below this speed. (Assuming no multiple failures!)
Usually in a 777 V1 and Vr will be coincident, sometimes there will be a small gap. If an increased climb performance is required it may be a large gap.
From a pilots view the difficulty is that you have no idea what the go speed and the stop speed actually are, only that V1 is between them. On some days it would be safe to continue 20 kts (or more) below V1 and on some days it would be safe to stop 20 kts (or more) above V1. YOU JUST DONT KNOW!
Thanks for that
I wonder if with so few posts you could be urged to repost your quote everytime we get into these kinds of discussions