As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT HYD PRESS DROPPED TO 0 & HYD QTY SHOT TO 19 QTS ON THE LT SIDE. RAN CHECKLIST & SYS CAME BACK AT 7000 FEET. NORMAL OPERATION AFTER THAT. TROUBLE SHOT HYD SYS FOUND LT RESERVOIR BYPASSING. R & R LT HYD RESERVOIR IAW AMM 29-10-01. SYS OPERATIONS CHECKED GOOD.