Which year did the Space Shuttle Columbia crash on its 28th voyage?

Explanation

The Space Shuttle Columbia was one of the five first US Space Shuttles. It was first sent into space on 2 April 1981, on the 20th anniversary of Gargarin's space flight. It disintegrated on its 28th mission on its re-entry into Earth's atmosphere on 1 February 2003. All seven crew members were killed because a piece of insulation material from the fuel tank peeled off during take-off, damaging the heat shield on the wing.