As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) DURING INSPECTION, SEVERAL HAIR LINE CRACKS WERE DISCOVERED IN THE CANTED RIB UPPER CAP IN THE CENTER WING CARRY-THROUGH AREA. THIS IS SECOND AIRCRAFT IN THE FLEET WITH CRACKS - REFER OPERATOR CONTROL NR AU981565. FOUND IAW RHEIMS SB CAB98-16.