As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLT CREW REPORTED FLAP FAIL AT 8 DEG WHEN FLAP LEVER WAS MOVED TO 0 DEG AFTER TAKEOFF FROM. ACFT RETURNED TO GROUND AND LANDED OVERWEIGHT BUT WITHOUT INCIDENT. USING AMM AND FIM, MX R & R THE RT BPSU. CHECKS WERE MADE AND AN OVERWEIGHT LANDING INSP WAS PERFORMED IAW THE AMM. NO FURTHER DEFECTS NOTED. ACFT RETURNED TO SERVICE.