Flex 35 is a flex 35 no matter the OAT as long as it is below 35 itself. Same for the speeds.
I think FE Hoppy is trying to explain, that to achieve the THRUST of Flex 35, somebody needs to work out the N1/EPR for the actual conditions. In case a manual input of OAT is required then the value becomes spinningly relevant.
Last edited by FlightDetent; 20th Sep 2017 at 20:01.
Reason: Speeds added.