What was found
WHILE TROUBLESHOOTING AN AIRFRAME VIBRATION ISSUE, MAINTENANCE FOUND THE RIGHT AFT NOSE LANDING GEAR DOOR HINGE FITTING TO HAVE EXCESSIVE PLAY. REPLACED THE HINGE FITTING PER CMM 22-13-400-001-A. THE AIRCRAFT WAS GROUNDED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE TROUBLESHOOTING AN AIRFRAME VIBRATION ISSUE, MAINTENANCE FOUND THE RIGHT AFT NOSE LANDING GEAR DOOR HINGE FITTING TO HAVE EXCESSIVE PLAY. REPLACED THE HINGE FITTING PER CMM 22-13-400-001-A. THE AIRCRAFT WAS GROUNDED.