What was found
AFT BAG PIT DOOR SURROUND, FLOOR JUST INSIDE DOOR CORRODED ACROSS ENTRYWAY. GROUNDED - YES. REMOVED CORROSSION ORIG. THICKNESS=.050" REMOVED= .014" REMAINING= .036. FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1. REMOVED AFT PIT THRESHOLD WEB, LOCATED & DRILLED NEW WEB P/N: 146A8123-25 P.O. 0 & INSTALLED IAW B737-900ER SRM 51-40-02, SRM 51-40-05, BAC DWG 146A8120 REV.A & BAC DWG 146A8340 REV G.