As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING SMELL COMING FROM FLIGHT DECK ON GROUND. MEL`D THE AIR CONDITIONING PACKS. DISCOVERED GRD WIRE W325-0005 IB FUEL PUMP LT WING TANK BURNT AT TERMINAL END OF GRD BLOCK. R&R TERMINAL END IAW SWPM 20-00-03 UNDER #100 PACK PANEL OPS CHECK IB FUEL PUMP IAW 28-45-00-700-801A OPS CHECK GOOD RAN 100 PACK NUMEROUS TIMES NO BURNING ODOR IN FLT DECK. CLEAR MEL