As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, FOUND UPPER WING INBOARD/OUTBOARD ATTACH BOLT WOULD NOT PROPERLY TIGHTEN TO TORQUE VALUE. INVESTIGATION REVEALED RIGHT UPPER FORWARD BARREL NUT WAS CRACKED. FURTHER INVESTIGATION REVEALED RIGHT LOWER FORWARD BARREL NUT WAS ALSO CRACKED.