As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, A CRACK WAS DISCOVERED IN RT OUTBOARD WING RIB WHERE AILERON HINGE BEARING BLOCK ATTACHES. CRACK IS HARD TO DETECT WITH AILERON INSTALLED. SUSPECT CAUSE IS THOUGHT TO BE FLYING IN TURBULENT AIR ABOVE MANEUVERING SPEED.