Come on, everyone!
In most cases, the plane that ended up being unable to take off again was not the one that was to fault for the problem. It was the car that was driving down the stairs at the time that this occurrence took place, and it was this car that was responsible for putting everyone in this dilemma.
A ladder was likely smuggled into the structure as a backup plan in the event that the initial plan was unsuccessful. This is because it is quite likely that the building does not contain any additional stairs anywhere else