As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED DUE TO A STRONG VIBRATION WITH NOSE LANDIG GEAR UP AND NORMAL INDICATIONS. TECHNICAL PERSONNEL DETECTED BOTH NOSE LANDING GEAR FORWARD DOORS OPENED. MECHANISM WAS CHECKED IAW MM 32-22-01, FINDING IT CORRECT. RIGHT NOSE LANDING GEAR LINKAGE DOOR WAS ADJUSTED IAW MM 32-22-01. OVERWEIGHT INSPECTION WAS PERFORMED IAW MM 05-51-04, ALL CORRECT. (M)