As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER NORMAL FLIGHT WAS COMPLETED AND ACFT SHUTDOWN, ATTEMPT WAS MADE TO LOWER FLAPS FOR ACFT WASHING. PRIMARY FLAP MOTOR OPERATED BUT FLAPS DID NOT MOVE. UPON INSP, PRIMARY FLAP MOTOR COUPLING WAS FOUND FAILED, DISCONNECTING MOTOR FROM FLAP ACTUATOR ASSY. A FUNCTIONAL TEST WAS DONE ON STANDBY FLAP MOTOR SYS WHICH OPERATED NORMAL. SYS INSPECTED FOR FURTHER DAMAGE, COUPLING REPLACED AND FUNCTIONAL TESTED NORMAL OPERATIONS.