What was found
AFT CARGO COMPARTMENT BETWEEN STA 807+5' AND 727D +3' LBL 20 WL 155.3 L/H ZEE ANGLE HAS SEVERAL AREAS OF CORROSION TO THE TOP AND BOTTOM SURFACES AS MARKED / REMOVED CORROSION FROM AFT CARGO COMPARTMENT L/H ZEE ANGLE IN SEVERAL AREAS BETWEEN STA 807+5' AND STA 727D+3' LBL 20L 155.3 IAW B737-800 SRM 51-10-02-0G-0 PAR .15. INDSPECTED WITH 1-0X MAG GLASS. NO DEFECTS NOTED. VERIFIED MATERIAL LOSS: ORIGINAL T= .040' REMAINING T= .032' LOSS= .008' LIMIT= .004'. FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-0053-1A-2 PAR. 4A. REMOVED AND REPLACED LH ZEE ANGLE FROM STA727 TO STA847 IAW B737-800 SRM 51-40-02-0G-0 AND B737-800 DWG 146A7500 REV-. APPLIED CIC IAW B737-800 AMM 51-21-91-702 MPN: 146A7502-31