Brief Description: Drilling of nutplate attach rivet holes.
Not all of the holes lined up on initial assembly of the Spar Box. Reassembled twice and finally got it right. Final drilled the nutplate attach rivet holes in the HS-1224 Doublers. Match drilled the nutplate attach rivet holes in the WD-1207 Upper and WD-1208 Lower Horns. Machine countersunk the nutplate attach rivet holes on the HS-1202 Fwd and HS-1203 Aft Spars. Primed the Fwd and Aft spars and the Doublers.
