As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
D: RECEIVED L REV UNLOCKED AFTER TAKEOFF. / C: MEL 78-30-1 / CAT: C DUE 05/23/21 / RECEIVED L REV UNLOCKED AFTER TAKEOFF. (FLIGHT 4722 - FILED CLOSED) MAY 13, 2021 STATION: DEN--DEFERRED #1 LH ENG THRUST REVERSER IN REF TO CRJ200 MEL 78-30-1. LH TR DEACTIVATED IN REF TO CRJ200 AMM 78-30-00-040-802. PINS INSTALLED. AIR TUBE STOWED IN SPARE BULB KIT. PLACARDS INSTALLED. MX ACTIONS COMPLIED WITH.