Question for an experienced Boeing avionics engineer
One question which has puzzled our 787 pilots since the type was introduced concerned the overhead panel illuminated switches. The switches with a line / bar across only illuminate in the top half (all others seem it have upper and lower illumination). What is the purpose / reason for this bar? Can the two switches be swopped if modified? We spend hour’s sitting there with little going on and it’s strange that none of the guys I fly with have any idea on this.Thanks