What was found
C HYD SYS PRESS EICAS MESSAGE DISPLAYED IN FLIGHT, HMG INOP. HYD PRESS INDICATION OPERATES NORMAL PER AMM 29-31-00-001. PERFORMED ADP SYS TEST PER B767 AMM 29-11-00. NO DEFECTS NOTED. TRANSFER TO DMI 239843 PER MEL 24-25-01-01D CAT A. R & R SOV PER AMM 24-25-03, NO HELP. T/S TO RELAY K858 IAW WDM 24-25-11, OPS CHK GOOD IAW AMM 24-25-00. DMI 239843 CLOSED. PLACARD REMOVED.