I suspect I'll get flamed for this but I still cannot understand how a crew could accept 74 Flex, a 40% reduction in thrust when confronted with a 13hr ULR flight at close to MTOW.
I am sorry I don't buy the HF speak variability of performance figures argument. Not too convinced about crossed out numbers in documentation either. I can happily subscribe to the 'there by the grace of god go I' argument but not in this case. It seems to me GIGO and no thought from the crew about what any of the numbers actually meant.
What do you guys think?