STS-129 Launch

STS-129 focused on staging spare components outside the station. The 11-day flight included three spacewalks. The payload bay carried two large ExPRESS Logistics Carriers holding two spare gyroscopes, two nitrogen tank assemblies, two pump modules, an ammonia tank assembly, a spare latching end effector for the station's robotic arm, a spare trailing umbilical system for the Mobile Transporter, and a high-pressure gas tank. STS-129 was the first flight of an Express Logistics Carrier. The completion of this mission left six Space Shuttle flights remaining until the end of the Space Shuttle program, after STS-135 was approved in February 2011