As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DECLARED. DURING CRUISE, YELLOW HYDRAULIC SYSTEM LEAKED TO RAT LEVEL. INSPECTED AND FOUND THE BLEEDER PLUG ON THE GY TRANSER UNIT TO HAVE A BLOWN SEAL CAUSING THE LEAK. REMOVED AND REPLACED THE DAMAGED O-RING AND INSTALLED THE BLEEDER PLUG IAW AMM 29-11-51-0401. NO FURTHER LEAKS. NO STARVATION IAW AMM 29-00-00-0301. SERVICED THE YELLOW HYD SYS IAW AMM 12-12-29.