( CNN ) -- NASA officials said Saturday they are confident that space shuttle Discovery 's Wednesday launch will go as scheduled , sending a crew of six astronauts to the International Space Station on an 11-day mission . NASA Test Director Jeff Spaulding said mechanical repairs on the shuttle 's system used to pressurize Discovery 's right hand Orbital Maneuvering System Pod have been successful . `` Right now we 're in a good path to get there , '' Spaulding said . The shuttle is scheduled to launch Wednesday . The targeted launch time is 3:52 p.m . ET , from NASA 's Kennedy Space Center in Florida , the shuttle 's launch and landing site . Initially , a mechanical problem had forced NASA to delay the final launch of the Discovery , the space agency said Friday . The original Monday launch date was delayed after officials found an air leak in the Orbital Maneuvering System Pod , NASA announced . The weather forecast for Wednesday 's launch calls for a 70 percent chance of acceptable conditions , NASA weather officials said . Discovery 's 11-day flight is expected to be a `` very busy mission , '' NASA Flight Director Bryan Lunney said . `` After we fly around the Earth about 170 times , Discovery will come home for its last flight , '' Lunney said during a news conference last month . `` The crew is ready to go . '' The six-member crew , led by Cmdr . Steven Lindsey , will install a new `` permanent multipurpose module '' called Leonardo on the International Space Station . This will be the 133rd space shuttle mission and the final one for Discovery . The shuttle Endeavour is set to launch February 26 , and Congress passed a bill this month authorizing another , final space shuttle mission .
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