As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO ANC UNDER AN AMBER ALERT DUE TO A HYDRAULIC PROBLEM. LEFT HAND ENGINE HYDRAULIC PUMP FAILED. REPLACED LEFT HAND PUMP PER MM29-11-05. ALSO REPLACED PRESSURE FILTER AND CASE DRAIN FILTERS. CHECKED AND REPLACED ELECTRIC HYDRAULIC PUMP CASE DRAIN FILTER PRECAUTIONARY, NO METAL FOUND. RETURNED AIRCRAFT TO SERVICE.