But lurking beneath these routine tasks was a ghost: . During launch, a piece of foam insulation—the same kind that struck Columbia —broke off the external tank and struck Endeavour’s underside. While initial laser scans showed no critical damage, NASA decided to deploy a new, experimental tool that would change shuttle inspection forever.
A "corner" of the thermal blanket on the left Orbital Maneuvering System (OMS) pod peeled back during launch, requiring an unplanned repair by spacewalkers. STS-120 (Discovery) | October 2007 Delivered the module to the ISS. Key Event: space shuttle mission 2007 crack free
Data collection and analysis plan