
STS-96 -- 2nd U.S. INTERNATIONAL SPACE STATION FLIGHT - SPACEHAB DOUBLE MODULENOTE: NASA Shuttle managers decided today to roll Space Shuttle Discovery back to the Vehicle Assembly Building to complete repair work on the hail-damaged external tank foam insulation. After much evaluation, managers determined that necessary repair work could not be performed at Launch Pad 39B due to limited access to damaged areas. Managers expect Discovery's move toward the VAB to begin early Sunday morning, May 16. Current work plans indicate that the foam repairs will take 2 to 3 days, allowing Discovery to roll back to Pad 39B by midweek. Managers expect the Shuttle to be ready for launch no earlier than May 27.
Workers will move the STS-93 external tank and booster stack out of VAB high bay 1 Saturday, May 15, to accommodate Shuttle Discovery's return. Once in the VAB, external tank access will be established immediately and workers will inspect the areas that were inaccessible at the pad. At least 35 foam divots have been identified for repair to date.
Last weekend, a hailstorm at KSC left about 150 divots in the outer foam of Discovery's external fuel tank. The average diameter of the divots is about 0.5 inches with the largest measuring about 2 inches in diameter. The depth of the dings range from 0.1 to 0.34 inches deep. Shuttle managers' primary concern is that ice could form inside the divots once the tank is loaded with super-cold propellants and then fall off during launch, impacting the orbiter and posing a threat to flight crew safety.
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