What was found
LT WING RIB 5 FWD LUG BORE DIAMETER HAS CORROSION THAT HAS EXCEEDED MAX ALLOWABLE REWORK DIMENSIONS "4.8405 IN". REMOVED LEVEL 1 CORROSION FROM LT WING RIB 5 BY OVERSIZING THE BORE AND SPOT FACING THE AFT LUG FACE, NDT INSPECTED (NIL FINDING) INCLUDED ACID ETCH, FINISHING CUTS WERE PERFORMED AND THE SURFACE PROTECTION WAS RESTORED. NEW OVERSIZED BUSHES WERE MFG AND INSTALLED ALL IAW DWG R572-49121 REV D, WITHOUT DEVIATION. FINAL BORE DIAMETER 4.920" AND LUG THICKNESS 2.235". COMPLIED WITH EO 6-5750-145650 PT 1, WINGS - AD 2008-17-0.