What was found
ON GEAR RETRACTION AFTER T/O NOSE GEAR DOOR AMBER LIGHT ON, WITH VIBRATION IN THE AREA BEHIND COCKPIT DOOR. WHEN GEAR EXTENDED FOR LANDING THE NOSE GEAR WAS ON. DID MANUAL GEAR EXTENSION. ALL GEAR GREEN LIGHTS ON. REMOVED AND REPLACED R/H NOSE GEAR DOOR ACTUATOR FITTING, DOOR ACTUATOR & DOOR SEQUENCE VALVE. REF EA. 6-5300-71217. A310 MM 32-31-18 & 32-31-16, DOOR RIG AND OPS CHECK NORMAL. PERFORMED GEAR RETRACTION TEST REF 32-31-00-5 OPS CHECK NORMAL.