What was found
WHILE PERFORMING SB 670BA-57-020 TO RT WING, TOOL DAMAGED FOUND ON RT TRUNNION FITTING AFTER FASTENER REMOVAL. REPAIR WAS MADE TO RT RIB AT WS 48.95 IAW REO 670-57-21-778, REV DATED 2015-05-23, WHILE INCORPORATING SB670BA-57-020, REV "C".