Shuttle expected to launch Sunday

CAPE CANAVERAL, Fla., March 14 (UPI) -- The space shuttle Discovery is expected to launch on schedule in Florida after repairs on a leaking gaseous hydrogen vent line, NASA said Saturday.

In a news release, Mike Leinbach, the shuttle launch director, said the repairs were a few hours behind schedule. But he said tests were expected to be completed later Saturday and the countdown would go off Sunday evening, with the launch scheduled for 7:43 p.m. EDT.

There is an 80 percent chance of good weather conditions, shuttle weather officer Kathy Winters said.

The mission is to be the 20th to the International Space Station. Launch had been scheduled for Wednesday but was delayed because of the leak.