Repaired bad rivet on Rib 11 - used AN426-4-3 Built and installed the landing light mount Drilled and mounted nutplates to leading edge ribs Fitted and marked plexiglass lens cover Drilled / Countersunk and shaped lens cover Made lens cover mounting brackets Mounted landing light bracket Mounted lens cover **** Cracked the lens cover around upper right screw Need to order a replacement lens cover from Vans.