Looking at:
http://www.!!!!!!!!!!!!!!/open.file/130315/L/
I see the 777 has only one autopilot engage selector on the MCP (as opposed to 3 on the other Boeing EFIS, one for each channel).
Does this imply the systems logic automatically selects the most appropriate autpilot given a failure scenario in one of the a/c systems?
Thanks - new to glass