What was found
DURING DC-CHECK AT SIN, FOUND CORROSION ON THE LOWER SECTION OF THE UPPER T-CHORD OF SPAR NR 1 AND NR 2 OF RIGHT INOARD MID FLAP. FOUND ON ROUTINE CARD 12FM40010. CORROSION LEVEL 1. LOCALLY BLEND OUT CORROSION DAMAGE FROM THE EFFECTED CHORD FLANGE LOWER SURFACE. BOTH NR 1 AND NR 2 SPARS. NDT INSPECT TO ENSURE CRACK AND DEFECT FREE CONDITION. REFINISH CHORDS TO DESIGN STANDARD. REASSEMBLED MID-FLAP WITH OVERSIZE FASTENERS AT LOCATIONS COMMON TO CORROSION REWORK. (M)