What was found
DURING D-CHECK INSP OF DATUM ACFT, SEVERAL LIGHT CORROSIONS WERE FOUND ON STIFFENERS AND PANELS UNDER KEEL TORQUE BOX AT STA 1265 TO STA 1480, RBL 9 TO LBL 9 (REF FIG 1). (THE CORROSION AREAS WERE BLENDED OUT, TRIMMED IAW EGAT EI T2010A53B-1516 AND APPROVED BY MFG SR 1-1637202262 AND FAA 8100-9 DATED 30 JULY, 2010 (FIGURE 2). THE REPAIR WAS CONSIDERED CATEGORY A REPAIR (PERMANENT), SO NO SUPPLEMENTAL INSPECTIONS ARE REQUIRED IAW THIS EO. (LEVEL 1 CORROSION))