
The mission patch worn on the clothing used by the astronauts of STS-115 was designed by Graham Huber, Peter Hui, and Gigi Lui, three students at York University in Toronto, Ontario, the same university that Steve MacLean attended. MacLean performed a spacewalk, becoming only the second Canadian, after Chris Hadfield to do so. Crew notes Ĭanadian Space Agency astronaut MacLean became the first Canadian to operate Canadarm2 and its Mobile Base in space as he was handed a new set of solar arrays from Ferguson and Burbank controlling the original Canadian robotic arm, the Canadarm. Note:The P3/P4 Truss segment and batteries were so heavy (more than 17.5 short tons, or roughly 16 metric tons) that the crew count was reduced from seven to six. 4.15 21 September (Flight day 13 and landing).The Columbia accident in February 2003 pushed the date back to 27 August 2006, which was again moved back for various reasons, including a threat from Tropical Storm Ernesto and the strongest lightning strike to ever hit an occupied shuttle launchpad. STS-115 was originally scheduled to launch in April 2003. A total of three spacewalks were performed, during which the crew connected the systems on the installed trusses, prepared them for deployment, and did other maintenance work on the station. The mission delivered the second port-side truss segment (ITS P3/P4), a pair of solar arrays (2A and 4A), and batteries.


The mission is also referred to as ISS-12A by the ISS program. STS-115 launched from LC-39B at the Kennedy Space Center on 9 September 2006 at 11:14:55 EDT (15:14:55 UTC). It was the first assembly mission to the ISS after the Columbia disaster, following the two successful Return to Flight missions, STS-114 and STS-121. STS-115 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Atlantis.
