As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT THRUST REVERSER WOULD DEPLOY ON GROUND ANY TIME SYSTEM WAS ARMED WITHOUT SELECTING DEPLOY. INSPECTED AND FOUND STOW/DEPLOY SWITCH MECHANICAL ARM AND ROLLER BROKEN OFF FROM SWITCH DUE TO FAILURE OF MECHANICAL ARM TO PIVOT POINT THROUGH PIN WELD.