As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 HYD FAILURE ON TAXI IN. FOUND B-NUT LOOSE ON DOWNLOCK ACTUATOR. TIGHTEN NUT AND REMOVED 4 ENG FILTERS, FOUND ALL 4 CLEAN. RE-INSTALLED NEW FILTERS AND MOTORED ENG. LEAK CK OK. RAN ENG AT IDLE AND CHECKED THAT PUMPS SWITCHED OVER AND ARMED. SERVICED NR 3 HYD SYSTEM.