As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE, FOUND THE LEFT FLOOR SUPPORT HAS CORROSION AT FRAME 30 AND FRAME 32. AIRCRAFT REMOVED FROM SERVICE. REMOVED LEFT FLOOR SUPPORT AT FRAME 30 AND 32 IN REF TO SRM 51-40-02. LOCATED AND DRILLED LEFT FLOOR SUPPORT AT FR 30 AND 32 IN REF TO SRM 51-40-02. INSTALLED NEW SILL IAW SRM 51-40-02. AIRCRAFT RETURNED TO SERVICE.