So
THAT'S why they call it an airstair!
I note with more than a little delight that the apparent distance between the bottom step and the tarmac would not cause one to reconsider a decision to use this route to escape a burning aircraft (although clearly not the case here).
Dave
Edited to mention that the photo is (c) Karl Jacobson, found at http://www.jetphotos.net/showphotos....,143662,143663 and that I don't claim any right to it. 