As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C13 CHECK DISCOVERED 7 CRACKS, 1.0 INCHES IN LENGTH, ON THE BOTTOM OF THE NR 1 SLAT FROM SS 247L TO SS 263.5L. MAINTENANCE CUT OUT DAMAGED SKIN ON NR 1 SLAT IAW BOEING 737-300 SRM 57-43-01-2R6. FABRICATED FILLER AND SPLICE PLATE IAW BOEING 737-300 SRM 57-43-01-2R6. INSTALLED FABRICATED REPAIR PARTS ON THE BOTTOM OF THE NR 1 SLAT FROM SS 247L TO SS 263.5L IAW BOEING 737-300 SRM 57-43-01-2R6.