As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTED RIB IAW SB 1161 AND FOUND RIB CRACKED. THE SAME RIB HAS BEEN FOUND CRACKED IN THE SAME LOCATION ON SIX OTHER WINGS. ALL OTHER WINGS HAD EXCESS OF 6000 HRS REPAIRED AND APPEARED TO HAVE BEEN INSTALLED CROOKED. THE ASSEMBLY PROCESS HAD THIS PART INSTALLED UNDER AN INITIAL LOAD LEADING TO PART CRACKING PREMATURELY. (K)