As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL, RECEIVED LEVEL 2 HYD 1 FAIL ALERT. RESERVOIR QUANTITY SHOWED 0.8 GALLONS. ***EMERGENCY DECLARED*** REMOVED STAB TRIM CONTROL MODULE IAW MD11 AMM 27-43-40-4 FOR EVIDENCE OF LEAK. LEAKING ISOLATED TO STAB TRIM CONTROL MODULE FLOW CONTROL VALVE.