As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) YELLOW HYD SYSTEM FAILED DURING CRUISE. RESOLUTION: NR 2 ENG HYD PSI TUBE FOUND WITH PIN HOLE, REPLACED PN 238-0658-501 IAW AMM, ENGINE PUMP CASE DRAIN FILTER REMOVED NIL PARTICLES FOUND. REPLACED FILTER IAW AMM 29-13-43 PB 401. ENGINE RUN CARRIED OUT NO LEAKS.