Nick
What is the reason for the 1 min at idle restriction on the Allison/Rolls Royce engine if the aircraft has been shut down for more than 15 min.
I personally abide by this restriction, (I dont feel that big rush to get airborne) but there are a few who don't.
They say if the press. and temps are in the green you are good to go.
The only thing that I have ever heard that remotely makes sense is that this time allows for oil circulation in the engine.
Do you have a buddy at Rolls that can give us a definitive answer once and for all?
Cheers