During boarding I noticed many times that planes are "connected" with some orange cable.
It's curious to know what is it. Does anybody knows?
During boarding I noticed many times that planes are "connected" with some orange cable.
It's curious to know what is it. Does anybody knows?
On further investigation, thats an A320 rather than a 757, and the A320 Airport and Maintenance Planning document shows that that hookup is the ground power port (page 206).
The stairs are for passing documentation up to the cockpit side windows, which open.