As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE FLIGHT, FLIGHT CREW RECEIVED AMBER CHECK “HYD QUANTITY” WARNING. MONITORED HYDRAULIC FLUID LEVEL AND DECLARED AN EMERGENCY LANDING IN OMA, DUE TO LEVEL CONTINUING TO DROP. IDENTIFIED LEAK ON RIGHT THRUST REVERSER ACTUATOR. SERVICED HYDRAULIC RESERVOIRS AND PREPARED AIRCRAFT FOR FERRY FLIGHT TO LNK FOR MAINTENANCE. RT TR ACTUATOR REPLACED WITH OVERHAULED UNIT P/N 1159SCP402-11, COMPLIED WITH OPERATIONAL AND LEAK CHECKS, REFERENCE AMM 78-00-00.