What was found
1000570352 - CORROSION UNDER A/NON FLOOR SUPPORT CHANNEL, AFT CARGO PIT STA 773 LBL 3 REMOVED IAW B737-300 SRM REV 125 51-10-02 PARA 14A. NOMINAL THICKNESS .063", REMAINING THICKNESS .020". MATERIAL REMOVAL OF .043" IS BEYOND THE ALLOWABLE LIMIT OF .0063" IAW B737-300 SRM REV 125 53-60-53 FIGURE 101 DETAIL VII. MATERIAL ID IAW 8737-300 SRM REV 125 53-60-53 FIGURE 1 DETAIL I ITEM 3. CORRODED FLOOR SUPPORT CHANNEL AFT CARGO PIT STA 773 LBL 3 REPAIRED IAW 8737-300 SRM REV 125 53-60-53 FIGURE 201 REPAIR 1. RE-PROTECTED IAW B737-300 SOPM REV 21 20-41-02.