As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSP-CLE FLIGHT#3260 THE CREW REPORTED THE #1 HYDRAULIC SYSTEM FELL TO "O" QUANTITY DURING FLIGHT.THE AIRCRAFT DIVERTED TO DTW AND LANDED WITHOUT FURTHER INCIDENT.THE CREW REPORTED THE # 1 ENGINE HYDRAULIC PUMP FAILED AND LOST #1 HYDRAULIC SYSTEM ON ROLLOUT OF LANDING.MAINTENANCE INSPECTED AND REPLACED THE #1 ENGINE HYDRAULIC PUMP.OPERATIONAL CHECKS WERE GOOD.THE AIRCRAFT WAS RELEASED FOR SERVICE.