What was found
DURING CRUISE WE RECEIVED A LEVEL 1 HYD 1 OFF ALERT. COMPLIED WITH QRH. HYD 1 QUANTITY WAS 3.0 GALLONS. DECLARED AN EMERGENCY WITH MEMPHIS APPROACH IN ANTICIPATION OF A LEVEL 2 HYD 1 FAIL ALERT. COMPLIED WITH QRH AND PERFORMED AN APPROACH AND LANDING TO KMEM 36C. RECEIVED THE LEVEL 2 HYD 1 FAIL ALERT DURING LANDING ROLL. EXITED THE RUNWAY, SET THE PARKING BRAKE, STARTED THE APU, AND SHUTDOWN ALL 3 ENGINES. ***EMERGENCY DECLARED*** #1 EDP'S WERE NOT RAN DRY 1.6 GALLONS REMAINS IN SYSTEM 1, IN CENTER WHEEL WELL 1-3 RMP INLET LINE TO #1 S/O VALVE HAS A STATIC LEAK, POSSIBLE O RING RUPTURE. MORE T/S AND CLEANUP REQUIRED FOUND THE O RING FOR THE INLET FOR THE 1-3 RMP DAMAGED AND LEAKING. REMOVED AND RELACED INLET O-RING , ITEM 340 IN IPC 29-22-01-01, IAW AMM 29-22-20-2. OPS AND LEAK CHECKS ARE GOOD AT THIS TIME. ORIG SUB DATE: 10/3/2022