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The additional time allows for completion of final prelaunch closeout ahead of liftoff of the SpaceX Falcon 9 rocket and Dragon cargo spacecraft from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Prior to every Dragon mission, SpaceX conducts extensive prelaunch checkouts at every stage of refurbishment and final integration to ensure the spacecraft is ready to safely fly its next mission. During the initial propellant load in preparation for the CRS-29 mission, teams identified a leak of NTO (nitrogen tetroxide oxidizer) in a Draco thruster valve, which per standard procedure required a pause to the operation to troubleshoot. The team inspected the valve and respective data, and decided to replace the thruster. SpaceX continues to keep NASA informed throughout the process and the joint team collectively decided to shift launch to account for the initial part replacement and subsequent system checkouts and data reviews. With a Nov. 9 launch, the spacecraft will arrive at the space station about 5:20 a.m. Saturday, Nov. 11.
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