As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON LANDING, GEAR DOWN SELECTION HEARD LOUD CLUNK, AND RT MAIN GEAR UNSAFE WARNING. CYCLED GEAR WITH SAME RESULT. ALTERNATE GEAR EXTENSION ACTIVATED, ALL GEAR INDICATED DOWN, NORMAL LANDING. MAINTENANCE INSPECTION FOUND RT AFT GEAR DOOR ACTUATOR SLOW TO OPEN DOORS DUE TO INTERNAL PRESSURE BYPASSING. RT AFT GEAR DOOR ACTUATOR REPLACED, LEAK AND FUNCTION CHECKS COMPLETED. AIRCRAFT RETURNED TO SERVICE. (TC NR 20070612002)