What was found
AFT CABIN WET AREA FLOOR SUPPORT INTERCOSTAL TOP SKIN @ LBL 24.75 STA 951 MKD DOT<[01] INSTALLED NEW FLOOR SUPPORT INTERCOSTAL AT STA 951 LBL 24.75 REF B 737-800-SRM 51-40-02-0G-0;[02] CORRECTION STEP 1 DWN # 147A650;[03] REMOVED AND REPLACED NEW INTERCOSTAL PART NO. 147A5660U3 AT AFT CABIN WET AREA STA. 947.5 TO 967 LBL 24.75 REF. SRM 51-40-02-0G-0 AND DWG 147A5650;[04] STEPS 1-3 INCORRECT REFERENCES. <BR>CORRECTION TO STEPS 1-3:<BR>REMOVED DAMAGED BEYOND LIMITS INTERCOASTAL; AND INSTALLED NEW INTERCOASTAL P/N 147A5660U3 AT AFT CABIN WET AREA LBL 24.75 STA 951. REFERENCES: SRM 53-70-51-1A-1 ; SRM 51-40-02-0G-0 AND BOEING DWG# 147A5650 SHEET 55.;[05] VERIFIED STEP 4.