As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT FLAP TOP SKIN CHAFED BY INBD EDGE OF WING LOCKER. INSUFFICIENT CLEARANCE ALLOWED FOR CONTACT BETWEEN THE INBD BOTTOM EDGE OF THE WING LOCKER AND THE UPPER SKIN OF THE FLAP RESULTING IN 80 PERCENT LOSS OF THE MATERIAL ON THE TOP OF THE FLAP. THE CHAFING WAS ALONG A LINE FWD TO AFT ABOUT 14" LONG WHERE THE INBD LOWER EDGE OF THE WING LOCKER WAS CONTACTING THE FLAP SKIN.