As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FOR C-CHECK, MAINTENANCE FOUND R/W STA 171.5 UPPER RIB CHORD CRACKED AT STRINGER 5 TO 20 ATTACH POINT. REMOVED FASTENERS AND CUT OUT DAMAGED AREA IAW SRM 51-40-4. FABRICATED REPAIR PARTS AND INSTALLED IAW SRM 51-40-2, 51-30-2.