What was found
AFT CARGO COMPARTMENT BETWEEN STA 727J +13' AND 787 L/H Z ANGLE IS CORRODED IN SEVERAL AREAS TOP AND BOTTOM SURFACES AS MARKED / REMOVED CORROSION FROM L/H ZEE ANGLE STA 727J + 13' TO 787 AND EVALUATED MATERIAL LOSS FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2. DEPTH=0.009' ORG 'T' =0.040' REMAINING 'T' =0.031'. TOOL # AAR 36647 DUE 06/07/20. TREATED AND PRIMED AREA IAW SRM 51-20-01 AND AMM 51-21-72-370-804. REMOVED AND REPLACED LH Z ANGLE FROM STA 727J + 13 AND STA 787 IAW BOEING 737 SRM 51-40-02-0G-0 AND BOEING DWG 146A7500. REMOVABLE COMPONENT P/N 146A7502-31