As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD 1 SYSTEM LOW QUANTITY ON EICAS THEN 10-15 MINUTES LATER HYD 1 SYSTEM FAIL ON EICAS. REMOVED AND REPLACED HYDRAULIC SYSTEM #1 ELECTRIC MOTOR DRIVEN PUMP. BLED AIR FROM HYDRAULIC SYSTEM 1. OPS CHECK SAT. REMOVED AND REPLACED LH ENGINE DRIVEN HYDRAULIC PUMP. PERFORMED ENGINE LEAK TEST, NO LEAKS NOTED