Shuttle Discovery external tank cracks and worries

Here’s the latest on the situation with the cracks in Shuttle Discovery’s external tank: STS-133 Shuttle Report | Fourth crack found on shuttle Discovery’s external tank – Spaceflight Now – Nov.15.10.

Bob Zimmerman worries that the cracks might be a repeat of some past Shuttle flaws: Shades of foam and failed o-rings? – Behind The Black


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