As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEADING EDGE SLAT NR 9 (114W4160-8) CENTER COVER PANEL HAS TWO CRACKS, 2 INCH AND 8 INCH. INTERNALLY FOUND THREE ADDITIONAL CRACKS ON NOSE BEAM WEB 1 INCH TO 3 INCH IN LENGTH UNDER STIFFENERS BETWEEN OUTBOARD MAIN TRACK RIB ASSY AND O/B DEFLECTION CONTROL RIB ASSY. PRELIMINARY FINDINGS INDICATE CRACKING APPEARS TO BE THE RESULT OF HIGH CYCLE SONIC FATIGUE.