As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING WALK AROUND, FLIGHT CREW, NOTICED EXCESSIVE GREASE STREAKING ON LT OTBD AILERON ASSY ACTION. MAINTENANCE TOOK AIRCRAFT OUT OF SERVICE AND AFTER THOROUGH INSPECTION TO THE AILERON AREA IT WAS FOUND THAT THE LT OTBD AILERON HINGE BEARING HAS FAILED AND CAUSE DAMAGE TO THE HINGE ARM.