As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT WING T/E CAVITY AILERON OTBD HINGE SUPPORT FITTING WING STA 817 OTBD SIDE FOUND CORROSION AROUND THE BONDING JUMPER ATTACHMENT BOLT AREA. CORRODED SUPPORT FITTING AT RT AILERON OTBD HINGE AT STA 817 R & R IAW EA F-5740-139377 (WING ATTACH FITTINGS - RT WING T/E RIB FABRICATION AND REPLACEMENT). REPAIR IS CLASSIFIED AS MAJOR IAW GMM 6-2-100.