As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOG PAGE 110832. DISCREPANCY: AT TOP OF DESCEND LOSS OF HYDRAULIC FLUID AND PRESSURE; COMPLETED ABNORMAL HYDRAULIC LANDING CHECKLIST. REMOVED AND REPLACED RT AILERON POWER ACTUATOR HYDRAULIC O-RINGS TO SWIVEL VALVE IAW DC8 MM 27-14-01. PERFORMED LEAK CHECK, NO LEAKS NOTED. SERVICED HYDRAULIC SYSTEM IAW MM 12-30-1.