Final Spacewalk of STS-131 is Completed

HOUSTON, April 13 (UPI) — NASA said the third and final spacewalk of the STS-131 mission to the International Space Station ended Tuesday at 8:38 a.m. EDT.

The six-hour, 24-minute outing for astronauts Rick Mastracchio and Clayton Anderson fell behind its timeline when an alignment issue delayed the stowage of a depleted ammonia tank assembly on a carrier in space shuttle Discovery’s cargo bay. Before wrapping up, NASA said the spacewalkers relocated a portable foot restraint and prepared cables on the Zenith 1 truss for a spare Space to Ground Ku-Band antenna, two chores required before space shuttle Atlantis’ STS-132/ULF-4 mission in May.

“This was the final STS-131 spacewalk, the 236th conducted by U.S. astronauts, and the sixth for both Mastracchio and Anderson,” the space agency said. “It was the 143rd in support of International Space Station assembly and maintenance, totaling 893 hours, 33 minutes. It was the 115th spacewalk based out of the space station, totaling 706 hours, 18 minutes.”

Discovery and its crew are to return to Earth April 19.

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