What was found
MAIN ROTOR SPAR IS CRACKED 72.81 INCHES FROM TIP UNDER THE NR 6 POCKET, CLOSE (APPROXIMATELY .1 INCH) TO THE SPACE BETWEEN THE NR 6 AND NR 7 POCKETS. THE CRACK RUNS CHORDWISE BETWEEN THE POCKET LEADING EDGE GROOVE, AND THE BACKWALL RADIUS. IT DOES NOT APPEAR TO GO ALL THE WAY TO THE BACKWALL RADIUS. THE CRACK IS APPROXIMATELY .5 INCH LONG AND LOOKS LIKE IT MAY HAVE BEEN CAUSED BY CORROSION PITS UNDERNEATH THE ORIGINAL ADHESIVE. ERICKSON HAD NOT REPLACED THIS POCKET AND IT IS UNKNOWN IF THE POCKET HAS EVER BEEN REPLACED.