As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT NOTED THE RIGHT LANDING LIGHT CIRCUIT BREAKER TRIPPED. PILOT RESET BREAKER AND IT TRIPPED AGAIN. INVESTIGATION REVEALED THE RIGHT MAIN FUEL TRANSFER PUMP WAS SHORTING THIS CIRCUIT. (NOTE: BOTH THE LANDING LIGHT AND TRANSFER PUMP ARE ON THE SAME CIRCUIT). THIS PUMP SHOWS SIGNS OF ARCING AND BURN MARKS AT THE POINT THE SHIELDED POWER WIRE ENTERS THE PUMP.