As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORM FOLLOW-UP OF C1 ACMP LOW PRESSURE LIGHT ILLUMINATED. C1 PUMP BREAKER PULLED. INSPECTED AREA, FOUND CONNECTOR 0482 TO C1 ACMP BURNT AND WELDED TO SOCKET. REPLACED CONNECTOR IAW BOEING SB 777-29-0029 AND WDM 29-11-31. FOUND PINS ON C1 ACMP BURNT. REMOVED AND REPLACED HYDRAULIC PUMP IAW B767 AMM 29-11-02-4. LEAK AND OPS CHECKED GOOD AT THIS TIME.