As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT CHECKED RIGHT HYDRAULIC PUMP BY PLACING LANDING GEAR HANDLE IN DOWN POSITION. GEAR HANDLE FAILED TO RETURN TO NEUTRAL IN A REASONABLE TIME INDICATING RT PUMP HAD FAILED. NO FLUID LOSS WAS DISCOVERED. CAUSE OF PUMP FAILURE IS UNKNOWN.