As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE A CRACK WAS FOUND ON THE RIGHT HAND CLOSE OUT RIB LOCATED AT RIGHT WING STATION 106.79 (P/N: 5122115-56). THIS CRACK STARTS FROM A HOLE IN THE FORWARD ROW OF FASTENERS COMMON TO THE AFT TRUNNION PLATE AND TRAVELS FORWARD APPROXIMATELY .595 INCHES. THIS RIB WILL BE REPLACED WITH A FACTORY NEW PART.