As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C/W PIPER AD 95-20-7, THE RIB ASSYS ON BOTH SIDES WERE FOUND CRACKED UNDERNEATH THE DRAG BRACE STUD BRACKETS. CRACKS WERE APPROXIMATELY 2 TO 3 INCHES LONG. REPLACEMENT OF THE RIB ASSYS ARE REQUIRED. SUBMITTER STATED THE NEW RIBS ARE MADE OF THICKER MATERIAL IN THIS AREA.