In message , Jeff Findley
writes

Here is a post which lists many things Enterprise lacked that a "real" space
shuttle needs in order to fly into space (the list is quite long):

http://groups.google.com/groups?selm...%40aio.jsc.nas
a.gov&output=gplain

Jeff

Point 13 in that list is interesting (explosive bolts and gravity to
lower the landing gear). Isn't lowering the gear a strictly one-shot
operation with no provision for retraction, which is why there has to be
a hand on the controls during landing?
I'm surprised they didn't keep the simpler system.