As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C17 CHECK DISCOVERED 4 CRACKS, .063 INCHES, ON THE BOTTOM OF THE NR 1 SLAT SKIN OUTBOARD OF THE INBOARD MAIN TRACK. MAINTENANCE REPAIRED THE BOTTOM SKIN OF THE NR 1 SLAT OUTBOARD OF THE INBOARD MAIN TRACK IAW BOEING 737-300 SRM 57-43-01-2R6 FIG 201.