As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN ANNUAL INSPECTION, THE TRAILING EDGE RIBS P/N 2522101-1 AND 2522101-2 WERE FOUND CRACKED. THE CRACKS WERE LOCATED IN THE WEB TO FLANGE RADIUS EMANATING FROM THE CUT-OUT FOR THE STRINGER PROGRESSING APPROXIMATELY .50 INCH ALONG THE RADIUS. SUBMITTER STATED THE CAUSE WAS POSSIBLY FATIGUE.