The first spacewalk was successfully by two crewmen in the early April. Followed by them two astronauts finished up their maintenance jobs on the international space station within 6.5 hours on Thursday.
In 2001, a spacewalk was scheduled by 8 hours and 56 minutes. Except for a video camera to be fixed for another was left undone which is placed on a transport platform.
After Russians have made their decision and agreed for an extra 50 minutes for spacewalking, NASA controllers started the work for spacewalking.
A new vent is placed for a broken oxygen-generation system by 2 astronauts named - Pavel Vinogradov, Russian commander and Jeff Williams, U.S. flight engineer.
Other maintenance works done by them includes repositioning a cable interfering with the signal of a navigation antenna, inspected another antenna that may be preventing a reboost engine from working properly, and retrieved a thruster residue collection plate, a contamination monitoring device and biology experiments, all were over within 6.5 hours.