As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING OPERATION EXPERIENCED THE CB FEEDING THE READING LIGHTS AT ROW 28-29-30/A-B-C POPPING. ON FURTHER TROUBLESHOOTING FOUND A WIRE AT CONNECTOR D11580 PIN #6 CHAFING AGAINST A BRACKET LOCATED BETWEEN PSUS AT ROW 29 & 30, CAUSING THE CIRCUIT BREAKER TO TRIP. CONNECTOR REPOSITIONED TO PROVIDE SUFFICIENT CLEARANCE FROM THE BRACKET AND THE WIRE REPAIRED. AIRCRAFT DISPATCHED TO SERVICE AND NO FURTHER OCCURANCES.