As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIMARY FLAP MOTOR DRIVE COUPLER FAILED. STAND BY SYSTEM USED TO EXTEND FLAPS. FLAP LIMIT SWITCHES NOT INCORPORATED IN STAND BY SYSTEM. OPERATIONAL SWITCH OF STAD BY SYSTEM HELD TOO LONG AND FLAP MOTOR CONTINUED TO RUN PAST LIMIT SWITCH LOCATION AND TWISTED FLAP DRIVE ASSEMBLY OUT OF MOUNTING BRACKET. RECOMMENDATION, PILOT BE MORE AWARE OF SYSTEM OPERATION OR INCORPORATE SWITCHES INTO STAND-BY SYSTEM.