As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE THE ACFT IS IN HEAVY CHECK - FOUND LT FLOOR DOUBLER AT FRAME 16 CORRODED. REMOVED AND INSTALLED REPLACEMENT LT FLOOR DOUBLER AT FRAME 16 REF SRM 51-40-08. APPLIED SURFACE PROTECTION TO LT FLOOR DOUBLER AT FRAME 16 REF SRM 51-23-06, CPM 51-25-00. ACFT REMAINS IN HEAVY CHECK UNTIL COMPLETION.