As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXCESSIVE VIBRATION IN NOSE GEAR AREA OCCURRED AFTER TAKEOFF. FLIGHT RETURNED TO MEM AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RIGHT NOSE GEAR DOOR OPEN AND MANUAL RELEASE INTERMITTENT. REPLACED MANUAL RELEASE LINK AND OPERATIONAL CHECK NORMAL.