Fabricate W12-02L & R Rear Spar Channel, W12-03L & R Outboard Rear Spar Channel. Drill #40 and cleco W12-04 x 2 Splice Plate to attach W12-02L & R to W12-03L & R. Drill #40 and cleco W13-01R & L Attach Plate, W13-02L & R Root Rib Attach Angle to W12-02L & R.
