• Two NASA astronauts have successfully completed the fifth spacewalk of this year aboard the International Space Station, spending 6 hours, 31 minutes to undertake maintenance operations on the orbital outpost.
  • Expedition 55 Flight Engineers Drew Feustel and Ricky Arnold of NASA moved the Pump Flow Control Subassembly (PFCS) from a spare parts platform on the station’s truss to the Dextre robotic arm.
  • The PFCS drives and controls the flow of ammonia through the exterior portions of the station’s cooling system.
  • The team then removed and replaced a camera group and a degraded Space to Ground Transmitter Receiver Controller, and was also able to complete several get-ahead tasks.
  • Spacewalkers have now spent a total of 54 days, 16 hours and 40 minutes working outside the station in support of assembly and maintenance of the orbiting laboratory.