Now consider the aircraft is locked up, dead ship. If you haven't got mobile steps, like alot of outports and the reason airstairs are fitted, how do you get to the cockpit and turn anything on?
That's exactly what I mean, I understand they
do work when the ship is completely dead. That's how I get into cockpit. What I wonder is how the battery bus gets power with BAT switch OFF.. still assuming a dead ship here no Ground Serv. Bus on either.
Sometimes we're lucky and mx have left the stairs out for us, but "security reasons" these days they're apparently not supposed to.