What was found
AFT CARGO COMPARTMENT DOOR LOWER SILL INTERCOSTAL IS CORRODED AT ALL VISIBLE NUT PLATES BETWEEN STA 807 AND 827 (MARKED). GROUNDED - YES. REMOVED CORROSION FROM THE AFT PIT LOWER SILL STRAP PER B737-800 SRM 53-60-5-1A-1. 2.A. ORIG. THICKNESS IS .100 PER B737-800 SRM 53-60-15-0O-1. TABLE 4. REMOVED .034 REMAINING IS .065 AND IS FOUND TO BE OUT OF LIMITS PER B737-800 SRM 53-60-15-1A-1.4.G.(3)(B). REMOVED AND REPLACED STRAP PN: 146A8128-14 ER B737-800 SRM 51-40-05, 51-40-02, AND BOEING DWG: 146A8120 REV: A.REMOVED DOT.