As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAPS MOVED UNCOMMANDED TO 8 DEGREES AT FL 330, FLAPS RETURNED TO ZERO DEGREES AND CREW PULLED THE FLAP CIRCUIT BREAKERS TO PREVENT FURTHER MOVEMENT. LANDED FLAPS ZERO, FLAPS WERE OVERSPEED. REPLACED THE LEFT FLAP POSITION TRANSMITTER AND FLAP CONTROL UNIT IAW AMM. RESET THE SKEW DETECTION SYSTEM OPS CHECK GOOD.