As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON REAR SPAR WEB TO THE INBOARD SIDE AND UNDER THE LT BULKHEAD FITTING AT BS 1241 UPPER PORTION APPROXIMATELY FASTENER NR 32 AREA DOWN. REMOVED CORROSION ON REAR SPAR WEB UNDER THE LT BULKHEAD FITTING AT BS 1241, IAW EO NR 57-747-1544-99 REV A