What was found
DEN - FLT 980 - UPON ROTATION AND GEAR UP, ENCOUNTERED VIBRATION IN NOSE WHEEL AS IF DOOR STAYED OPEN. ON TAXI, IN RIGHT NOSE GEAR DOOR WAS OPEN. INSPECTED NOSE GEAR DOOR, LINKAGES/STRUT/TORQUE LINKS. NO DEFECTS NOTED. TESTED NOSE GEAR DOOR LOCKS BY PULLING ON IT, THEY REMAINED LOCKED. NO DEFECTS NOTED, OK TO CONTINUE. (M)