What was found
DURING HEAVY MAINTENANCE: LEFT FUSELAGE FR 68-70 LBL20 CABIN FLOOR SUPPORT UPPER SURFACE CORRODED SEVERAL PLACES. REMOVED AND REPLACED FLOOR SUPPORT Y512.5 FR67 TO FR70 IAW SRM 51-72-11-911-001.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE: LEFT FUSELAGE FR 68-70 LBL20 CABIN FLOOR SUPPORT UPPER SURFACE CORRODED SEVERAL PLACES. REMOVED AND REPLACED FLOOR SUPPORT Y512.5 FR67 TO FR70 IAW SRM 51-72-11-911-001.