High Quality Content by WIKIPEDIA articles! The Boeing KB-50 was a modified Boeing B-50 Superfortress for air refueling needs by the United States Air Force. Two primary tanker versions were developed and produced; the KB-50J and the KB-50K.The Air Force planned all along that a total of 134 B-50s, made up of B-50As, RB-50s, and B-50Ds, would be converted into aerial refueling tankers when no longer needed by Strategic Air Command bomber forces. As tankers, KB-50s would feature extensively reinforced outer wing panels, as well as the necessary equipment to air refuel simultaneously 3 fighter-type aircraft by the probe and drogue method. The modifications, assigned to the Hayes Aircraft Corporation, also included deletion of the B-50 defensive armament and replacement of the aircraft's tail section. Although the completion date of the Hayes modification was tentatively set for December 1957, the project (ordered in the mid-fifties) proceeded so well that it was ended ahead of schedule.

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