The VS was clamped in this position and four holes were drilled in the lower part of the Aft Spar using the open #30 holes in the rear tie down. This required a right angle drill and drilling in a tight space. These holes were then opened up to #12 holes and temporarily bolted. The two holes in the F-F812B on either side of the locating hole were drilled to #30 then opened to #12 and bolted.
