What was found
CORROSION. AT AFT CABIN WET AREA FLOOR SUPPORT FASTENER HOLE LBL. 50 BETWEEN STA 947.5 AND STA 967 WL208.1 / [01] LOCATED AND DRILLED AT AFT CABIN WET AREA FLOOR SUPPORT LBL 50 BETWEEN STA 947.5 AND STA 967 WL 208.1 AS PER SRM 51-40-05-0G-0;[02] LATE ENTRY REMOVED FLOOR SUPPORT AT AFT CABIN WET AREA LBL 50 BETWEEN STA 947.5 AND STA 967 WL208.1 AS PER SRM 51-40-02-0G-0;[03] REMOVED CORROSION AT AFT CABIN WET AREA FLOOR SUPPORT FASTENER HOLE LBL. 50 BETWEEN STA 947.5 AND STA 967 CORROSION EXCCEDED 30% OF NOMINAL THICHNESS FOUND TO BE OUT OF LIMITS IRW 53-70-51-1A-1;[04] VERIFIED 1;2;AND 3;OK TO TREAT/PRIME HOLES IN NEW INTERCOSTAL.;[05] TREATED AND PRIME NEW HOLES IN NEW INTERCOSTAL IRW AMM 51-21-41-370-803;51-21-72-370-803;[06] VERIFIED 5;OK TO INSTALL INTERCOSTAL;[07] CORRECTION TO STEP 6;OK TO INSTALL NEW INTERCOSTAL.;[08] INSTALLED NEW INTERCOSTAL AT AFT CABIN WET AREA FLOOR SUPPORT LBL 50 BETWEEN STA 947.5 AND STA 967 IRW SRM 51-40-02;[09] VERIFIED 8;COMPLETE;[10] VERIFIED ALL STEPS COMPLETE