As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE ACCOMPLISHING AD 80-19-14 STABILIZER FITTING INSPECTION, 2 CRACKS WERE NOTICED ON THE BOTTOM RIB P/N 220000-033 OF THE VERTICAL FIN. CRACKS ARE LOCATED INTHE REAR 90 DEGREE BEND OF THE RIB, RADIATING INWARDS FROM THE RADIUS CUT OUT. CRACKS WERE BOTH ABOUT 1 INCH LONG. VERTICAL FIN REMOVED TO FACILITATE RIB P/N 220000-033 REPLACEMENT. ONCE FIN WAS REMOVED, ANOTHER RIB WAS FOUND CRACKED.