T-0 and liftoff of Space Shuttle Columbia is observed striking the underside of the LH wing of the orbiter.

At approximately 80-84 seconds after T-0 and liftoff of Space Shuttle Columbia, a large piece of debris is observed striking the underside of the LH wing of the orbiter. The debris appeas to originate from the area of the -Y bipod attach point on the external tank. No damage to the orbiter Thermal Protection Systems was apparent.