As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON PUTTING GEAR HANDLE DOWN, HEARD LOUD BANG AND SHUTTER IN AIRCRAFT. NORMAL GEAR INDICATION. FOUND RIGHT MAIN LANDING GEAR ACTUATOR EYE BOLT PULLED OUT OF THE ACTUATOR. REPLACED THE RIGHT MAIN LANDING GEAR ACTUATOR IAW DC9 AMM 32-32-02.