Archive - Jul 10, 2006
The second of three spacewalks scheduled for STS-121 is now in the books. Mission Specialists Piers Sellers and Mike Fossum completed both major objectives of the 6-hour, 47-minute excursion, which concluded at 3:01 p.m. EDT.
The first task the orbital duo completed was the installation of a spare thermal control system pump on to the outside of the Quest Airlock.
Then, Sellers and Fossum turned their attention to maintenance on the mobile transporter. They replaced a reel assembly for a cable that provides power and data to the station's mobile transporter. The completion of this job gives the transporter fully functional primary and backup systems for use during future station assembly tasks.