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Columbia's no. 2 engine, removed from
the orbiter, is lowered toward the floor of the Orbiter Processing
Facility. After small cracks were discovered on the LH2 Main
Propulsion System (MPS) flow liners in two other orbiters, program
managers decided to move forward with inspections on Columbia before
clearing it for flight on STS-107. The heat shields were removed, and
after removing the three main engines, inspections of the flow liners
will follow. The July 19 launch of Columbia on STS-107 has been
delayed a few weeks.