As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT HYD QTY DECREASED TO 0 AND SYS PRESS LIGHT ILLUMINATED. EICAS MESSAGE L HYD SYS PRESS DISPLAYED AND RUDDER RATIO LIGHT. REPLACED LT ENGINE HYD OUT PRESSURE LINE AND LT ENGINE HYD PUMP. SERVICED LT SYSTEM AND RAN LT ENG ALL CHECK NORMAL. INSPECTED HYD FILTERS IN LT PYLON PRESSURE AND CASE DRAIN FILTERS, ALL CHECK OK.