As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENG HYD PUMP EICAS, FLT DIVERTED. FBO MECH FOUND HYD LEAK AT NR 1 ENGINE DRIVEN PUMP FLANGE. LT HYD RSVR WAS FOUND EMPTY. REPLACED NR 1 ENG HYD PUMP. RAN NR1 ENG FOR ENG DRIVEN HYD PUMP REPLACEMENT, OP CHECKED NR 1 ENG HYD IAW JRH. OP CHECKED GOOD.