Posted: Thu, May 30, 2002, 8:49 PM ET (0049 GMT)
Threatening weather forced NASA shuttle managers to scrub Thursday's night scheduled launch of Endeavour by one day. Endeavour was scheduled to lift off at 7:44 pm EDT (2344 GMT), but anvil clouds in the vicinity of the launch site led NASA to scrub the launch 23 minutes before the scheduled liftoff time. The launch of STS-111 has been rescheduled for Friday at 7:22 pm EDT (2322 GMT), although weather will again be a concern. During the countdown Thursday evening engineers did notice a problem with a pressure regulator with the shuttle's Orbital Maneuvering System, but the problem was corrected and would not have prevented the launch. Endeavour is scheduled to perform a 12-day mission to exchange long-term crews on the station, as well as install a mobile base system for the railcar on the station's new truss segment and fix a joint problem with the station's robotic arm.
