As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) RT REV UNLOCKED MESSAGE POSTED. THRUST REVERSER CYCLED SEVERAL TIMES BUT UNSUCCESSFULL. RETURNED TO GATE. AT GATE, SEVERE DAMAGE FOUND TO THRUST REVERSER TRANSLATING COWL. FOUND ACTUATOR AT 11 O'CLOCK POSITION SHEARED. ACTUATOR REPLACED IN ACCORDANCE WITH AMM.B.