As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON LANDING THE PILOT REQUESTED 20 DEGREES FLAP AND THE FLAPS STOPPED/STAYED AT THE 10 DEGREE SETTING. AFTER INSPECTION BY MAINTENANCE THE PRIMARY MOTOR SHAFT SHEAR PIN WAS FOUND SHEARED, THE SYSTEM FUNCTIONED PROPERLY IN STBY MODE, THE FLAP ACTUATOR ASSY WAS REPLACED WITH AN OVERHAULED UNIT AND THE AIRCRAFT WAS RETURNED TO SERVICE.