As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WHILE TROUBLESHOOTING NOSE LANDING GEAR SHIMMY / VIBRATION ISSUE MAINTENANCE: FOUND EXCESSIVE PLAY / WEAR ON THE ANTI-ROTATION LUG INSIDE THE LANDING GEAR ASSEMBLY. FURTHER EVALUATION REVEALED THE DETECTION OF RUST AND A POSSIBLE CRACK ON THE ANTI-ROTATION LUG. THE NOSE LANDING GEAR ASSEMBLY WAS REPLACED PER TASK CARD 26L71032003.