Debur: W08-01 x 10R Main Spar. W15-01, 2, 3 & 4 Forward Rib Assembly, W15-05 x 8 Forward Rib. W16-01, -02, -03, -04 Right Hand Rib Assembly. W16-06 Aft Rib. W21-01R Right Hand Rib #9 Assembly. Mark holes on W14-02 x 10 Center Spacer, W14-03 x 8 Web spacer. Drill and debur 2 holes on each.