As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLAPS WILL NOT RETRACT COMPLETELY. INVESTIGATION REVEALED A SNAPPED COUPLING ON THE RT FLAPACTUATOR SHAFT AT THE GEARBOX. FURTHER INVESTIGATION REVEALED THE RT FLAP MOTOR WAS INTERMITENT. SUSPECT THE FLAP MOTOR BRAKE WAS NOT RELEASING DURING FLAP OPERATION.