As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCOVERED RIB SEVERELY CRACKED FROM RT FORWARD LOWER CORNER TO TOP CENTER DIAGONALLY DURING 100-HOUR INSPECTION. SUSPECT FROM HARD LANDINGS. AIRCRAFT USED FOR FLIGHT TRAINING ALMOST EXCLUSIVELY. NEW PART OF SAME NUMBER IS MUCH STRONGER WITH MANY STRUCTURAL MODIFICATIONS. SUSPECT PIPER IS AWARE OF PROBLEM. RIB LOCATED IMMEDIATELY OUTBOARD OF MAIN GEAR ATTACH POINT.