As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RECEIVED A "HYD 1 LOW QTY" BLUE MESSAGE IN FLIGHT. DECLARED AN EMERGENCY AND DIVERTED. ACFT LANDED WITHOUT INCIDENT. ACFT WAS REMOVED FROM SERVICE. FOUND NR 2 HYD SYSTEM OVERSERVICED. BALANCED BOTH NR 1 & 2 IAW ETN EM-29-023. REPLENISHED NR 1 & NR 2 HYD SYSTEMS ABOVE REFILL IAW AMM TASK 12-13-01-600-802-A. NO LEAKAGE. ACFT RETURNED TO SERVICE.