As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) EICAS MSG R REV. UNLOCKED DISPLAYED DURING FINAL APPROACH. ENG POWER WAS AT IDLE. NOTICED AC ROLL AND YAW. EMERGENCY STOW SELECTED AND A/P DISCONNECTED. RT REVERSER NOT SELECTED ON LANDING ROLL. REVERSER DEACTIVATED AND AC DXD UNDER MEL. VERBAL COMMENT FROM THE CREW WAS THAT THEY FELT THE REVERSER HAD UNLOCKED/PARTIALLY DEPLOYED FLT RECORDER PULLED FOR FURTHER EVALUATION.