What was found
DURING HEAVY CHECK MAINTENANCE FOUND LH AFT SILL HAS CORROSION FR 19-21 LBL 44"-49". REMOVED AND REPLACED LH AFT SILL AT FR 19-21 LBL 44"-49" PER SRM 51-40-08. A/C REMAINS IN CHECK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY CHECK MAINTENANCE FOUND LH AFT SILL HAS CORROSION FR 19-21 LBL 44"-49". REMOVED AND REPLACED LH AFT SILL AT FR 19-21 LBL 44"-49" PER SRM 51-40-08. A/C REMAINS IN CHECK.