What was found
D: GEAR DISAGREE ON APPROACH, (AMBER LEFT MAIN) WENT AROUND / PERFORMED QRH, GEAR ALL SHOWED GREEN/DOWN ON THIRD CYCLE. / DEN LINE MX - INTERROGATED PSEU AND FOUND CODES S19 AND S34 FOR THE LH MLG DOWN LOCK. DEFERRING LANDING GEAR RETRACTION SYSTEM REF CRJ200 MEL 32-30-1. MX ACTIONS CW, PLACARDS INSTALLED. / C: MEL 32-30-1 / CAT A DUE WITHIN 1 FLT DAY (6/24?/22) / **SMOD APPROVAL REQ'D TO RTS THIS A/C AFTER MEL CLEARED DUE TO ODI EVENT** / GEAR DISAGREE ON APPROACH, (AMBER LEFT MAIN) WENT AROUND / PERFORMED QRH, GEAR ALL SHOWED GREEN/DOWN ON THIRD CYCLE. / (FLIGHT 5551 - FILED CLOSED) JUN 23, 2022 STATION: DEN--INTERROGATED PSEU AND FOUND CODES S19 AND S34 FOR THE LH MLG DOWNLOCK. DEFERRING LANDING GEAR RETRACTION SYSTEM REF CRJ200 MEL 32-30-1. DOWNGRADED FROM CAT II PER GMM 2-23. MX ACTIONS CW, PLACARDS INSTALLED.