After earlier combat trials proved troublesome, the Norden bombsight and its associated AFCE were used on a wide scale for the first time on the 18 March 1943 mission to Bremen-Vegesack, Germany. The 303d Bombardment Group dropped 76% of its load within a ring, representing a CEP well under . As at sea, many early missions over Europe demonstrated varied results; on wider inspection, only 50% of American bombs fell within a of the target, and American flyers estimated that as many as 90% of bombs could miss their targets. The average CEP in 1943 was , meaning that only 16% of the bombs fell within of the aiming point. A bomb, standard for precision missions after 1943, had a lethal radius of only .