Investigators believe that during Columbia's launch in January 2003, insulating foam from the bipod broke off the external tank during lift off. They believe this damaged the Orbiter's left wing, creating a hole. Searing gases entered the hole upon re-entry, leading to its destruction and causing the tragic death of seven astronauts. One of the recommendations by the Columbia Accident Investigation Board was the elimination of foam and its replacement with heaters, in order to minimize potential debris. The anti-icing cartridge heaters maintain the web area of the bipod attachment fitting above 32°F so as to prevent the formation of ice that could dislodge in flight and damage the orbiter.

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