What was found
ETOPS SIGNIFICANT SYSTEM - UPON TOP OF DESCENT "R GEN OFF" EICAS, TRIED RESET,STILL OFF.//PER WDM 24-21-21 FOUND RT IDG D10966 PIN 10 WIRE CHAFED BEHIND BACKSHELL. 10-19-09 5743. REPAIRED CONNECTOR D10966 PIN 10 WIRE PER BOEING SWPM 20-10-13. ITEM TROUBLESHOT PER FIM 24-20-00 TABLE 102 FAULTS. FOUND RT GEN"OVER VOLT TRIP & GEN WIRING" - CHECKED RT GEN WIRING TO GCU PER WDM 24-21 21AND FIM 24-20-00 TABLE 102 WIRING CHECK OKAY - REPLACED RT GCU PER AMM 24-22-02 - PRECAUTIONARY, GND RUN UP CHECK OKAY.