Kennedy Space Center, Fla.
Oct. 6, 1995
NASA's Space Shuttle Processing Status Report
October 6, 1995
10 a.m. EDT
Launch of Space Shuttle Columbia was delayed today for at least 24 hours due to a problem in the orbiter’s no. 1 hydraulic system. The orbiter has three hydraulic systems.
Last night, when the hydraulic circulation pumps were run to verify the system was operating properly, engineers noticed that a problem existed in the hydraulic fluid volume in the area of the nose wheel steering, which is controlled by the no. 1 hydraulic system.
After further checks, engineers concluded the proper amount of fluid was not correctly circulating through the hydraulic lines.
Based on this information, managers postponed the launch of Columbia for at least 24 hours. Following a retest of the hydraulic system later today, a firm launch date will be made available.
At this time, the managers are preparing to access the aft engine compartment. Engineers will cycle the hydraulic system’s fill and dump valve and run a compressibility test on the no. 1 hydraulic system.
If the test is good, managers feel the aft compartment may be closed-out in time for a launch attempt on Saturday, Oct. 7. If the system fails the test and further servicing is required, the earliest Columbia could be ready for launch is Sunday.
More information and results from the compressibility test will be available later this afternoon.
A press conference to discuss the problem and launch options is scheduled for 11 a.m. EDT.
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