As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON THE UPPER SURFACE OF THE BOTTOM CAP OF THE RT WING SPAR ASSY, AT APPROXIMATLEY WING STATION 60, JUST INBD OF THE RT LANDING GEAR FORWARD TRUNION FITTING ASSY. CORROSION APPEARED TO HAVE STARTED INSIDE THE SPAR MATERIAL AND HAD NO EXTERNAL INFLUENCE.