W12-01R and -01L Right and Left Hand Rear Spars - Continued on Rear Spars. Finnished drilling #40 pilot holes for W12-04 Splice Plates. Updrilled Splice Plate holes to #30 size. W13-04 Doubler - Located and drilled both #40 pilot holes and updrilled to #30 holes per plans. Did not updrill the two holes located where a rib will be attached. W13-05R and -05L Tip Rib Attach Angles - Located per the plans and drilled the #40 pilot holes. W13-01R Right Hand Attach Plate - Located per plans and drilled #40 Pilot holes. W13-02R Root Rib Attach Angle - Located per the plans and drilled the #40 pilot holes.
Click on a picture to enlarge it: