What was found
UPON GEAR RETRACTION APPROXIMATELY 10 LOUD BANGING VIBRATIONS WERE FELT THROUGHOUT THE PLANE. SIMULTANEOUSLY ALL 6 GEARS & GEAR DOOR LIGHTS FLICKERED ON & OFF. ALL LIGHTS & VIBRATIONS STOPPED AFTER APPROXIMATELY 15 SECONDS. NORMAL GEAR EXTENSION & LIGHT INDICATIONS WERE OBSERVED. PERFORMED A VISUAL INSPECTION OF NLG, NLG HARNESS, DOORS & ATTACHMENTS WITH NO DEFECTS NOTED. PERFORMED LUBRICATION OF THE NLG, NLG DOORS, MLG & DOORS WITH NO DEFECTS NOTED. PERFORMED SEVERAL SUCCESSFUL EXTENSIONS & RETRACTIONS OF THE LG WITH NO DEFECTS NOTED. PERFORMED A VISUAL INSPECTION OF THE MLG, NLG, DOORS WITH GEAR RETRACTED, NO DEFECTS NOTED, WORK DONE IAW AMM 32-10-10.