NASA: GOOD SHOT AT SUNDAY SHUTTLE LAUNCH

(AP) --  NASA feels it has a good shot at sending shuttle Discovery to the international space station on Sunday following repairs out at the launch pad.
A half-dozen or so workers were out at the Florida launch pad Friday, putting in a new hydrogen vent line hookup and fresh seals. 

NASA called off Wednesday's launch attempt after hydrogen gas leaked into the air at the spot where a hydrogen gas vent line hooks up to Discovery's external fuel tank. 

It was the latest delay for the mission to deliver a final set of solar wings to the space station. The earlier postponements were caused by different shuttle valves and pushed the flight back by a month. 

Forecasters expect an 80 percent chance of good weather for the evening launch. 

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