February 12/13, 1943

    12 Wellingtons from 426 and 427 Squadrons were ordered on a mining operation to the Frisian Islands. The crews were over the garden at between 500 and 800 feet, sowing 24@1500 lb mines.

    Sgt O. Adlam RAF and crew from 427 Squadron, flying Wellington III  BJ-778 coded ZL-D, crashed at Chopgate, 10 miles NNW of Helmsley on return.

      P/O B. Dunn, RAF
      Sgt A. Clifford, RAF
      Sgt W. Jelley, RAF
      Sgt W. Ball, RAF
    All were killed.