What was found
RT WING FUEL TANK RIB, OB VERTICAL STIFFENER CRACKED, UPPER END, WS 171.5 BETWEEN STR 9 AND STR 10. REMOVED DAMAGED VERTICAL RIB STIFFNER AT WS 171.5 BETWEEN STR 9 & 10 RIGHT. DRILLED UP & INSTALLED NEW STIFFNER (P/N 65-8338-30) IAW SRM 51-30-5, SRM 51-30-2 & SRM 51-40-4.