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George Diller
NASA Vandenberg Resident Office
Phone: (805) 605-3051

Lynn Chandler
Goddard Space Flight Center
Phone: (240) 832-0566

Barry Beneski
Orbital Sciences Corporation
Phone: (703) 406-5528

RELEASE : 19-06
ST5 Launch To Be Rescheduled
The launch of NASA's ST5 spacecraft aboard an Orbital Sciences Pegasus XL rocket was called off today when a locking pin in the rocket's flight control service mechanism did not retract just prior to launch. Orbital Sciences Corporation and NASA engineers will diagnose and correct the problem. A new launch date will be established at the earliest opportunity pending resolution of the issue, the availability of the Western Range, and acceptable weather conditions at the Vandenberg Air Force Base, Calif., launch site. The delay will be at least 48 hours.

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