As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE PERFORMING A DEFUEL OF AIRCRAFT TO PERFORM SCHEDULED MAINTENANCE, RT WING FUEL BOOST PUMP POPPED CIRCUIT BREAKER AFTER 3 MINUTES OF OPERATION DEFUELING AIRCRAFT. PUMP WAS ALLOWED TO SIT FOR 10 MINUTES AND C/B RESET AND PUMP WOULD AGAIN WORK FOR 3 MINUTES. THIS HAPPENED 3 TIMES UNTIL DEFUEL WAS COMPLETE. PUMP WAS REPLACED WITH O/H UNIT. TESTED SATISFACTORY (TC NR 20070611001)