Endeavour launch uncertain for next Tuesday, could be as late as May 13th

KENNEDY SPACE CENTER, Fla. - The final flight of Space Shuttle Endeavour may be pushed back once again.

Launch had been scheduled for this coming Tuesday.  Now NASA says it may be some time after that.

Workers are still testing a power distribution box that malfunctioned just a few hours before launch time last Friday.

The box and the electrical system power the heaters to the shuttle's hydraulic steering system and without it, Endeavour's crew might not be able to steer the shuttle.

NASA removed the power distribution box that caused the problem.

They are still testing the electrical system.

May 10th is the earliest Endeavour could launch and NASA officials say it could be as late as Friday, May 13th before the shuttle gets off the ground.

"A little disappointed of course that we couldn't launch," says Mike Leinbach, Shuttle Launch Director.  "But responding to problems is one of the things we do best around here and the team always likes a good challenge."

While there is no set date for the launch of Endeavour, you might want to look north Friday afternoon.

An Atlas V rocket is scheduled to blast off from Cape Canaveral at 2:14 p.m.