What was found
THE LEFT THRUST REVERSER UNLOCK LIGHT ILLUMITNATED AT FL280. NO ADVERSE YAW. COMPLETED QHR AND LANDED AT ATL. ASSIGNED TO MEL 78-30-1. CONTIUNED FLIGHT AND REMOVED DMI PER RIGGING OF LT T/R STOW MICROSWITCH AND THROTTLE MICROSWITCH ALONG WITH RIG CHECK OF BALLSCREW ACTUATOR AND PDU SYSTEM IAW CRJ AMM 78-32-01-330-801, 78-30-00-720-804, AND 78-30-00-6-830-802. SYSTEMS OPS CK GOOD ON GROUND RUN.