As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POSITIVE CRACK INDICATION FOUND USING HFEC, A FULL SCREEN DEFLECTION WAS INDICATED. CRACK LOCATED ON LEADING EDGE OF NUMBER 9 SLAT AT APPROXIMATELY 41 INCHES FROM OUTBOARD END ON LOWER SURFACE AT FIRST FASTENER LOCATION FROM FORWARD EDGE. INSTALLED DOUBLER REPAIR PER SRM 57-43-01-2R.