What was found
CONNECTOR D256A FOUND WITH EVIDENCE OF ARCING AT PINS C15, D15 & D13. REQUIRES FURTHER INVESTIGATION. CONNECTOR D256 FRAME REPLACED ALONG WITH D256A PLUG INSERT. REFITTED ORIGINAL D256B AND D256C PLUG INSERT INTO NEW FRAME. IAW SWPM 20-71-14 PAGE 165/166. D256A CONTACTS REMOVED FROM DAMAGED INSERT, INSPECTED AND REINSTALLED INTO NEW D256A INSERT IAW SWPM 20-71-14 PAGE 248-251. INSPECTION OF PIN POSITION OF D256A CARRIED OUT IAW WDM HOOKUP LIST. GCU INSTALLED AND FUNCTIONED IAW AMM 24-22-02-404-010. BPCU BITE TEST CARRIED OUT IAW AMM 24-41-03-404-008. #2 ENGINE IDLE RUN CARRIED OUT. CONNECTOR ARCING DISCOVERED WHEN TROUBLE SHOOTING BUS TIE BREAKER ISSUE.