 On 21 January 1960 , the Settle rail crash , which cost the lives of five passengers , was caused when the piston rod , cross @-@ head and connecting rod of No. 70052 came loose and damaged the opposite line as a freight train was approaching . The locomotive of the freight train was derailed towards 70052 's train and tore out the sides of three passenger coaches . Part of the slide assembly was redesigned , and was fitted as the locomotives were routinely " shopped " . 
