As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NOSE GEAR DOORS CAME OPEN ACCOMPANIED BY ILLUMINATION OF THE RED NOSE GEAR DOORS LIGHT WITH THE GEAR HANDLE IN UP OR OFF POSITION WHILE AT CRUISE. VIBRATION WAS FELT AND NOISE LEVEL HAD INCREASED. MAINTENANCE FOUND THE NOSE GEAR DOORS OUT OF RIG. THE DOORS WERE RIGGED IAW MM 32-22-1 AND OPERATION CHECKED GOOD.