14 DAY TRIAL // During a routine inspection Sunday night after the draining of the external fuel tank, a crack was discovered in the foam near a bracket that holds the liquid oxygen feedline in place. It is believed that the rain experienced during Sunday's launch attempt caused water to run down the feedline and form ice near the top of the strut next to the feedline bracket. As the tank warmed and expanded, the ice that formed most likely pinched the foam on the top of the strut, causing a crack and eventual loss of the small piece of foam. The Mission Management Team met Monday at 6:30 p.m. EDT to discuss the results of the information before making a final decision regarding Tuesday's launch attempt.
Extensive analysis showed that the area around the crack is intact and there is no concern for heating as there is adequate foam in place on the strut. Additional borescope inspection of the tank revealed that the bracket has no cracks.
Currently, there is a 60 percent chance of favorable launch weather for Tuesday and a 40 percent chance of favorable weather for Wednesday according to Air Force First Lt. Kaleb Nordgren of the 45th Weather Squadron. If the weather cooperates this will be the first Independence Day launch of a space shuttle!
Photo: Discovery poised for launch. Credit: NASA/KSC