Flex temp requirements
One of the requirements for a flex takeoff, is takeoff thrust must not be less than 25 percent full rated thrust. How can you actually determine this?
Is it built in to the takeoff charts so you know you are guaranteed to not get less than 25 percent?
Secondly, Tmax is the maximum flex temperature...Why is it possible to takeoff with a flex higher than this?
Thanks for your help.