As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GYR - DURING C20 CHECK, DISCOVERED THE LT OUTBOARD AFT FLAP LOWER AND UPPER EDGE AREA DEBONDED, FROM WBL 224.40 TO WBL 231.4. MAINTENANCE REMOVED DAMAGED ARE ON THE AFT FLAP LOWER AND UPPER SURFACE IAW BOEING 737-300 SRM 51-70-10-2R. FABRICATED CORE AND DOUBLER IAW BOEING 737-300 SRM 51-70-10-2R. BONDED REPAIR PARTS TO THE LT OUTBOARD AFT FLAP IAW BOEING 737-300 SRM 51-70-10-2R.