What was found
(CAN) DURING LANDING GEAR RETRACTION AFTER TAKEOFF, THE NLG DOOR AMBER AND NOSE RED UNSAFE INDICATION ASSOCIATED WITH DISAGREE AMBER LIGHT ON THE LG CONTROL HANDLE. THE CREW CONFIRMED EXTERNAL NOISE WHICH SUGGESTS THE NLG DOOR AND OR GEAR WAS ACTUALLY NOT RETRACTED/CLOSED. THE CREW SELECTED LANDING GEAR INHIBIT SWITCH TO INHIBIT, THEN THE NLG DOOR AMBER LIGHT WENT OUT WITH REDUCED EXTERNAL NOISE. IMMEDIATELY AFTER THE CREW SELECTED THE LG CONTROL HANDLE TO DOWN POSITION, NLG DOOR AMBER LIGHT COME BACK ON AND NOSE INDICATED GREEN DOWN & LOCKED. ALTERNATE EXTENSION PERFORMED AND THE ACFT LANDED UNEVENTFULLY. DAMAGE FOUND ON THE NLG DOOR SUGGESTS THE NLG AND ITS DOORS WERE OUT OF SEQUENCE.