A340 MCDU Fuel Time No Optimal
Hello,
a quick question, can anyone explain how the MCDU on the A340 can arrive at this message? I am new to glass cockpits, and have been told by some it simply means "it's not worth going any higher...probably due higher winds in the system." However, I very recently flew with a captain who went into a detailed answer of a sliding range around the manually inputted step climb position, and if this message comes up it means the box can't find a better position to step climb than the manually inputted one.
Is there anyone who can enlighten me? Sorry if this is a basic question...I do want to understand what my aircraft is telling me!!!
DA