Originally Posted by peekay4
FLEX has arming and engaging phases. When the thrust levers are moved to FLX/MCT, but the FLEX conditions are not met, then FLEX mode will fail to engage.
That means the engines will stay at MCT, which is not enough for takeoff.
I am not sure about that, do you have a reference ?
My idea (but I don't have more reference ...) is that if you don't insert any flex, you will get TOGA anyway in the FLX/MCT detent.
Hence the "retard, retard, retard" warning at 80 kts, which the pilots elected to ignore.
I had never heard of such "RETARD" call by 80kt ... Do you have a reference ?