What was found
AFT WET AREA 986.5 FLOOR BEAM HAS CORROSION AT LBL 40. GROUNDED - YES. REMOVED DAMAGE AND FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 57-50-51-1A-1, ORIGINAL THICKNESS .150, MAT REMAINING .090 PER BAC DWG# 147A5506 REV-, CUT AND REMOVED DAMAGE PART OF FLOOR BEAM IAW B737-900ER SRM 53-70-51-2R-6 ALTERNATIVE 4, FABRICATED, LOCATED, DRILLED REPAIR PARTS IAW B737-900 ER SRM 53-70-51-2R-6 ALTERNATIVE 4, ALODINED AREA AND REPAIR PARTS I.A.W B737-900ER SRM 51-20-01, PRIMED AREA AND PRIMED PARTS PER SOPM 20-41-02 INSTALLED REPAIR PARTS IAW B737-900ER SRM 53-70-51-2R-6 ALTERNATIVE 4.