STS-116 - Mission Background

Mission Background

STS-116 was planned (post return-to-flight) to launch on 14 December 2006. But on 29 November 2006 NASA announced that the launch team had been asked to aim for a launch on 7 December 2006 rather than the original target date of 14 December. The launch window for the STS-116 mission opened on 7 December and extended through 17 December. The seven-member flight crew arrived for launch at Kennedy's Shuttle Landing Facility on 3 December 2006 in the afternoon. Primary payloads on the 13-day mission were the P5 integrated truss segment, SPACEHAB single logistics module, and an integrated cargo carrier. The STS-116 mission was the 20th Shuttle flight to the station.

Launch on the new, earlier date required a night-time launch. Subsequent to the Columbia disaster, NASA had imposed rules requiring shuttle launches to be conducted during the day, when light would be sufficient for cameras to observe falling debris. With the redesign of shuttle tank foam having minimized the amount of falling debris and the availability of in-orbit inspection procedures, the daylight-launch requirement was relaxed.

Rollover of Discovery to the Vehicle Assembly Building (VAB) occurred on 31 October, and on 1 November the orbiter was raised into a vertical orientation and moved into High Bay 3 to be mated with the external tank and solid rocket boosters. Rollout to Launch Complex 39B was completed on Thursday 11 November.

The crew for the mission arrived at Kennedy Space Center on 13 November to begin their final four-day prelaunch training for the mission, which included familiarization activities, rehearsal of emergency procedures and practice on NASA's Shuttle Training Aircraft, along with a simulated countdown, which took place on the morning of 16 November 2006. The astronauts then traveled to Johnson Space Center in Houston, Texas, and returned to Kennedy Space Center on 3 December 2006, four days before the planned launch date.

The payloads for the mission, including a SPACEHAB module and the P5 truss, were loaded from the payload canister into Discovery's payload bay on 16 November, and, with the sealing of the payload bay doors, all that remained was to fill the external fuel tank before the Discovery shuttle stack was in full launch configuration. With the completion of the Flight Readiness Review over 28–29 November (which evaluated all activities and elements necessary for the safe and successful performance of the shuttle during the mission, including the Orbiter itself, the payload and flight crew), Discovery was given her Certificate of Flight Readiness, the launch date was officially set to 7 December 2006, and the mission officially given the "Go" for launch.