It looks like NASA is going to give Discovery another shot on Sunday, after the mission management team, in charge of reviewing the shuttle’s readiness, gave its OK. Shuttle weather officer Kathy Winters said there is an 80 percent chance of acceptable conditions on Sunday for the launch.

NASA engineers have been working on repairs to the vent line, after an unexpected gaseous hydrogen leak occurred a few days ago, during the countdown for the launch.

Mike Leinbach, shuttle launch director, said yesterday that the work to replace a suspect quick disconnect assembly on the launch pad was still a few hours behind schedule, but things should be ready by the time of the launch.

The space shuttle is set to lift off on March 15, at 7:43 p.m. EDT from NASA’s Kennedy Space Center in Florida. Discovery will deliver the fourth and final set of solar wings to the International Space Station, as well as replace a failed unit of the system that converts urine to potable water.

The flight is also making the final necessary preparations that will enable the International Space Station to sustain a crew of six. Furthermore, the ISS will now also have enough electricity for its science experiments.

The crew arriving at the International Space Station for the 13-day mission is made up of seven astronauts: Commander Lee Archambault, in charge of the crew, Pilot Tony Antonelli, and Mission Specialists Joseph Acaba, John Phillips, Steve Swanson, Richard Arnold and Japan Aerospace Exploration Agency astronaut Koichi Wakata.