As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED INSPECTION, MAINTENANCE DISCOVERED A RIB FLANGE CRACKED ON THE RT SIDE OF THE H-STAB APPROX 7 INCH FROM THE AFT EDGE ON THE BOTTOM FLANGE. UPON FURTHER INSP, MX DISCOVERED 14 CRACKS ON 3 RIBS OF THE RT SIDE AND AN ADDITIONAL 7 CRACKS ON 4 RIBS OF THE LT SIDE OF THE H-STAB. ALL CRACKED RIBS WERE REPLACED.