As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIB FOUND CRACKED AT INBOARD RIGHT WING AT INBOARD ENGINE MOUNT SUPPORT. ADDED A DOUBLER SUPPORT AND STOP DRILLED CRACK. THIS IS THE THIRD AIRCRAFT OF THIS TYPE WITH THIS PROBLEM FOUND DURING AN ANNUAL INSPECTION, ONE AIRCRAFT WAS FOUND WITH BOTH ENGINES'' MOUNTS CRACKED AT THE SAME INBD AREAS. SUBMITTER SUSPECTED FATIGUE FROM TIME CAUSING CRACKS. (X)