Studies for twenty-one months, and then.

® COMMUNICATIONS AND TRACKING OISPLAYS AND CONTROLS STOWAGE Figure 3-6.— Aft flight-deck configuration. OPERATIONS PANELS TO BE SUPPLIED BY NASA PAYLOAD OPERATIONS CONTROL CENTER 24 meters (77 feet) tall 121 meters (397 feet) long 6.7 meters (22 feet) controlled — are structurally attached.