This was Boeings entrant in a competition for an Air Force STOL transport in the 1970s. Note the location allowed the large fan engnies to add to the lift of the wing by exhausting on the upper wing surface, and the enormous flap tracks to support what must've been an impressive full flap configuration!
(2008)
Copyright © 2008, Ian A. Duncan
Revised - - 1/16/2008
URL http://www.flyian.net/aircraft/amarg/yc14.htm