What was found
DURING HEAVY CHECK, LT SILL AT FRAME 90 IS CORRODED. MAINTENANCE R & R LT SILL AT FRAME 90 IAW SRM 170 51-40-02, 51-42-01, 51-43-01, 51-41-01, 51-23-04,51-23-06. PN 170-86139-005, PANEL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY CHECK, LT SILL AT FRAME 90 IS CORRODED. MAINTENANCE R & R LT SILL AT FRAME 90 IAW SRM 170 51-40-02, 51-42-01, 51-43-01, 51-41-01, 51-23-04,51-23-06. PN 170-86139-005, PANEL.