After day-long discussions in the executive Flight Readiness Review, Shuttle engineers were given the go ahead to prepare Atlantis for the 11-day mission to the International Space Station.

Speaking at a press briefing following the review, Bill Gerstenmaier, NASA's associate administrator for Space Operations, said quite some time was spent discussing the Engine Cut-Off sensor problem that had delayed the launch in December. "The team worked hard and has a good fix in place," he said.

Atlantis will however have to clear a new hurdle before next week's launch after a bent radiator hose was discovered inside the orbiter's payload bay.

"In preparing Atlantis for flight, we wanted to inspect carefully the Freon loop hoses as we did on Discovery and saw generally the same bend in one of the four radiator retract hoses," explained Shuttle Programme Manager Wayne Hale.

The Freon loops remove heat on orbit - a critical function required for safe operation of the Shuttle.

"Every time we open and close the payload bay doors, these hoses flex," Hale added.

"Though it's working perfectly, we want to understand why this is happening. I feel confident we'll come to a good conclusion, but we need to be sure before going to fly."

Managers will meet again on Saturday afternoon to evaluate the situation once more data has been collected.

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