What was found
AFT CARGO STA 794+9 TO 807+14; RBL 23; WL 154; LOWER SILL STRAP HAS CORROSION ON UPPER SURFACE. / REMOVED CORROSION AT AFT CARGO LOWE SILL STRAP IAW 737-700 SRM 51-10-02-06-0 VEIFIED LIMTS AS ORG 'T' .100';LOSS OF .015'; REMAINING .085' IS OUT OF LIMITS IAW 737-700 SRM 53-00-53-1A-2 VERIFIED NEW AFT CARGO LOWER SILL AS P/N:146A8128-14 IAW A-TAG WN6459 AND BOEING DWG 146A8120 REV A. INSTALLED AFT CARGO LOWER SILL IAW B737-700 SRM 51-40-02-0G-0 AND BOEING DWG 146A8120 REV A. A TAG WN6459 PN 146A8128-14.