What was found
AIRCRAFT IN BASE MAINTENANCE: CORROSION OF AFT CARGO DOOR THRESHOLD TORSION BOX COVER SHEET BETWEEN FR57R AND FR58R AT STR 38R, MEASURING L=2.3 IN, W=2.0 IN, D=0.015 IN. REPLACED COVER SHEET WITH NEW IAW SRM 51-72-11-911. **CORRECTED SECTION 7 CORROSION LEVEL BY REMOVING LEVEL 2 DUE TO FURTHER EVALUATION IT WAS DETERMINED TO BE LEVEL 1 CORROSION DUE TO THE AREA HAD BEEN PREVIUOSLY BLENDED**