As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER INSTALLATION, DURING FUNCTION GROUND CHECK, BOOST PUMP CIRCUIT BREAKER TRIPPED AFTER APPROXIMATELY 1 MINUTE OF OPERATION. REMOVED PUMP AND INSPECTED FOR BLOCKAGE, FOUND NONE. INSTALLED AND ATTEMPTED GROUND CHECK AGAIN. PUMP MOTOR WOULD SLOW DOWN AFTER 1 MINUTE AND TRIP CIRCUIT BREAKER. REMOVED PUMP FOR WARRANTY. PUMP OVERHAULED BY FLEET SUPPORT SERVICES. (NE5D064N)