Primed all HS-1216, HS-1206, and HS-1204 Ribs with Aviation Zinc Phosphate Primer. Replaced HS-1205 and HS-1207 outboard ribs with HS-1204 and HS-1206 respectively per section 12A for optional fiberglass fairings.
Riveted 4 HS-1216 Aft Main Ribs and 4 HS-1206 Inboard Main Ribs to the HS-1214 Rib Clips using LP4-3 Rivets. Riveted the fwd inboard ribs to the HS-01202-1 Fwd Spar including the forward flange of the HS-1206 Inboard Ribs on the third from center forward inboard ribs. Riveted the HS-1204 Outboard forward rib to the HS-1206 Outboard Aft rib through the forward Spar.
