As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST HYDRAULIC PRESSURE IN-FLIGHT. NOTED LEFT FLAP ACTUATOR HYDRAULIC RETRACT TUBE ASSY WAS CHAFED THROUGH TO A PIN HOLE AT THE FLAP ACTUATOR BELLCRANK. CAUSED BY THE ACTUATOR PISTON ROD ATTACH BOLT WASHER CONTACTING THE TUBE WHEN THE FLAPS WERE CYCLED UP AND DOWN.