What was found
D: GEAR DISAGREE WARN MESSAGE UPON PUTTING GEAR DOWN FOR LANDING IN KHOB. QRH PROCEDURE CLEARED MESSAGE. DEN ROAD TRIP MX - DEFERRED LANDING GEAR RETRACTION SYSTEM PER MEL 32-30-1. COMPLIED WITH MAINTENANCE ACTION. INSTALLED PLACARD / C: MEL 32-30-1 / CAT A DUE 11/20/21 / **CAT II DOWNGRADED** / GEAR DISAGREE WARN MESSAGE UPON PUTTING GEAR DOWN FOR LANDING IN KHOB. QRH PROCEDURE CLEARED MESSAGE. (FLIGHT 4735 - FILED CLOSED) NOV 19, 2021 STATION: HOB--**AIRCRAFT DOWNGRADED FROM CAT II STATUS** / DEFERRED LANDING GEAR RETRACTION SYSTEM PER MEL 32-30-1. COMPLIED WITH MAINTENANCE ACTION. INSTALLED PLACARD / NOV 20, 2021 STATION: TUS -- ACCOMPLISHED TROUBLESHOOTING OF THE GEAR DISAGREE PER FIM 32-60-07 REF CP 23864450. RIGGED L NLG DOOR CLOSED PROX SWITCH REF CP 23864463 AND REMOVED&REPLACED MLG SELECTOR VALVE REF CP 23864466. OPS CHECK OF THE GEAR EXTENSION/RETRACTION SYSTEM GOOD. CYCLED GEAR 3 TIMES WITH 3A ONLY AND 3 TIMES WITH 3B ONLY AND TWICE WITH BOTH 3A&3B. NO FAULTS FOUND. COMPLETED CAT2 RETURN TO SERVICE TASK CARD.