As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT LOST LEFT HYDRAULIC PRESSURE, WITH LEFT HYDRAULIC SYSTEM PRESSURE. EICAS MESSAGE AND HYDRAULIC QTY 0.01 RF. HYD PRESS 120 INDICATIONS. THE FLIGHT DECLARED AN EMERGENCY AND LANDED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS GROUNDED. REMOVED AND REPLACED DPI ON HYD FILTER MODULE IAW AMM 29-11-17.