Originally Posted by de facto
It the same as ohhh the runway is now wet..let s just cut 10kts off V1..
de facto, that's absolutely not what we're talking about here.
The question is:
"You have calculated a reduced thrust setting with the corresponding V-speeds. Is it now "safe" to use the same speeds with a higher thrust setting (TOGA), all other factors (rwy conditions, weight...) remaining the same?"
The simple answer is yes! If Airbus talks about not mixing and matching speeds, they're not talking about setting TOGA. Setting TOGA at any point during the TO roll is always an option. (On the A320 anyway. I would be amazed if it were different on any other jet)
Don't worry, if it suddenly starts raining and the rwy gets wet, the laptop will come out and new TO settings will be checked. (If it was likely to start raining, we would probably have had those numbers available already
)