What was found
DURING C-CHECK AT AERO CORP, ACCOMPLISHED AD 90-06-02, REPLACED THE LT WING CRACKED FRONT SPAR UPPER CHORD BETWEEN FS 97 TO FS 225 IAW SB 737-57A1081 (R10) PART III OR IV OF ACCOMPLISHMENT INSTRUCTIONS. REMOVED CRACKED LT UPPER WING SPAR CHORD FROM STA 90 - STA 216, REPLACED UPPER CHORD IAW 737 SB 57-1081A, AND BOEING DRAWING NR 65-68497. RE-INSPECT FOR CORROSION IN THE FORWARD VISIBLE SURFACES OF THE CHORD AND SPLICE AT 12 MONTH INTERVALS. (X)