sentences:  When Auster was taken over by Beagle Aircraft in September 1960, development of the D.6 was dropped, while the D.4 and D.5 continued in limited production.Only four D.6 aircraft were completed, one D.6/160 (later converted to D.6/180 standard) and three as D.6/180.A fifth airframe was never completed and was later stored at Carr Farm, Newark (2003).