As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON INBOUND TAXI ALL HYD PRESSURE AND FLUID WAS LOST FROM SYS 2. INVESTIGATION FOUND THE LEAK AT THE LT OTBD MULTIFUNCTION SPOILER ACTUATOR. 2 OF THE 4 BOLTS AT THE FLANGE HAD SHEARED AND CAUSED THE LEAK. LT NR 5 MFS PCU REPLACED IAW AMM 27-65-01, PN 414800-1009, SN 2106.