As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE INSPECTION FOUND CORROSION AT STR 28 LT, STA 1000 TO 1006. CORROSION FOUND TO BE BEYOND LIMITS. STRINGER REPLACED I.A.W. B737 SRM 53-10-2 AND 51-10-1 PG. 9 PARA 7. STRINGER REPLACED STA 986 - 1016 PLUS/MINUS 28". ORIGINAL SPLICE REUSED. SPLICE PIECE CLEANED AND PAINTED. LEVEL 1 CPCP ISOLATED TO LAV LEAK AND NOT EXPERIENCED ACROSS THE FLEET.