As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST HYD SYS-C AT CRUISE. FLUID LEVEL AND PRESS DROPPED TO ZERO, LO QTY AND LO PRESS LIGHTS ILLUMINATED AND C2 ATM STARTED RUNNING. ACCOMPLISHED C/L PROCEDURES, MANUAL GEAR EXTENSION. FOUND CRACKED UNION JUST O/B OF C-SYSTEM PUMP. REPLACED SAME.