As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) RT MAIN GEAR DOWN AND LOCK LIGHT WON'T COME ON. FLIGHT CREW EXTENDED THE GEAR WITH THE BLOW DOWN SYSTEM. MAINTENANCE CREW FOUND A HYDRAULIC (O-RING) SEAL SEPERATED IN TWO INSIDE THE RT MAIN LANDING GEAR SIDE BRACE ACTUATOR ASSY. ACTUATOR ASSY REPAIRED.