Maybe someone who is CURRENTLY flying the type would care to run the numbers for us so we can be informed as to the REAL difference is V speeds and flex?
Maybe 3 knots but i bet a few degrees of flex!
Possibly. However, my understanding is that in the event of an engine failure under flex conditions, no additional thrust is required, the calculations are good for flex OEI. In reality pretty much all operators will add power to the live engine by either pressing TOGA, pushing TL forward of a detent or in some cases doing nothing as the aircraft adds power without pilot input.
So now does that mitigate 400 metres of missing runway as far as obstacles upwind are concerned?