yee@trident.arc.nasa.gov (Peter E. Yee) (04/26/91)
Ed Campion Headquarters, Washington, D.C. April 24, 1991 (Phone: 202/453-1134) Dick Young Kennedy Space Center, Fla. (Phone: 407/867-2468) STS-39 LAUNCH ADVISORY Based upon the progress of work on the orbiter Discovery at the Kennedy Space Center, Fla., Launch Complex 39-A, NASA Space Shuttle managers have elected to pick up the STS-39 countdown at 8:15 a.m. EDT on Thursday, April 25. The count is to culminate in liftoff of Discovery with Department of Defense Space Defense Initiative payloads during a window extending from 7:01 to 10:21 a.m. EDT on Sunday, April 28. Technicians are in the process of removing a pressure transducer on a Space Shuttle Main Engine No. 3 that malfunctioned during the countdown on Tuesday morning, along with its associated electrical harness and replacing them. The transducer and electrical harness will be flown to the Marshall Space Flight Center, Huntsville, Ala., where laboratory tests will attempt to duplicated the Tuesday morning failure. A Sunday launch is contingent on resolution of the problem.