What was found
MAIN CABIN, AFT WET AREA, AFT PRESSURE BULKHEAD LOWER INTERCOSTAL AT STA 1016-STA 1029, LBL 27-LBL 42, WL 210 UPPER SURFACE CORRODED. GROUNDED - YES. EVALUATED INTERCOSTAL ON THE AFT PRESSURE BULKHEAD AT STA 1016-STA 1029, LBL 27-LBL 42,FOUND TO BE OUT OF LIMITS IAW B737-700 SRM 53-80-08-1A-1 FIG 103 DETIAL D. REMOVED AND REPLACED INTERCOSTAL, PART #65-54862-23 IAW B737-700 SRM 51-40-02 AND BOEING DRAWING 148A0922 REV-SHEET 11. DOT X079 REMOVED.