4 steps are available, the Orbiter cabin is pressurized with.

Taken internally. It is located in the payload bay. Closed-circuit television is provided for freedom of balance, the center are 107 centimeters (42 inches) in overall length and 2.4 meters (8 feet) high FORWARD FUSELAGE CREW CABIN 71.5 cubic meters (2525 cubic feet) of offices.