What was found
UPPER FUSELAGE INTERIOR, MAIN CARGO DOOR UPPER SILL SUPPORT LOWER SURFACE HAS LIGHT SURFACE CORROSION AT BS 661, STRINGER 2L. REMOVED DAMAGED SILL SUPPORT IAW SRM 51-30-2. FABRICATED NEW SILL SUPPORT IAW SRM 53-10-2, FIG 3 AND 51-20-1, FIG 7. INSTALLED NEW SILL SUPPORT IAW SRM 51-30-2.