What was found
DURING C-CHECK, FOUND MAIN CABIN FRAME BS 600 HAS A DENT INTO THE RADIUS AT STRINGER 16R. CUT OUT DAMAGED AREA OF FRAME. FABRICATED NEW SECTION OF FRAME, MAT USED 7075-T6 .050 P/O NR 991420 DIM 12 INCH BY 5 INCH, AND FILLER MAT USED 7075-T6 .050 P/O NR 991420 DIM 2.5 INCH BY 1.5 INCH IAW SRM 51-40-3. INSTALLED IAW SRM 51-40-3. (M)