DCA85AA009

During arrival to the Kansas City downtown arpt, the flt was vectored for a VOR rwy 3 apch, then was cleared for the apch & to circle & land on rwy 36. On final apch, the acft was hi & was not in a position to land, so the flt was cleared to circle left for another apch to land. The aircrew acknowledged & began circling left which took them in the vicinity of the fairfax arpt. A short time later, the ATC controller cautioned that the flt might be lining up for the fairfax arpt. Subsequently, the crew initiated a missed apch & were instructed to turn to 360 deg & climb to 3000 ft. the acft began a steep climb to 3100 ft, stalled & entered a steep descent. Before the descent was arrested, the acft impacted in a public water treatment plant. CVR recordings indicated that the 1st officer was flying the acft during theen route descent, VOR apch & circling apch, then the captain took control during the missed apch. An exam of the wreck- age revealed no evidence of an airframe or powerplant problem. Also, there was no evidence that the cargo had shifted.