As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-15 CHECK EXFOLIATION CORROSION WAS FOUND ON STRINGER 27 LT AT BS 988. MAINTENANCE REMOVED DAMAGE SECTION OF STRINGER 27 LT AT BS 988; FABRICATED A NEW REPLACEMENT SECTION OF STRINGER; INSTALLED REPAIR PART IAW B737-300 SRM 53-00-03 FIG 201.