As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL, UNABLE TO PLACE APU GENERATOR ON LINE WITH ENGINE GENERATORS ON LINE. FOUND BUS POWER UNIT AT FAULT. REMOVED AND REPLACED BPCU IAW MM. PERFORMED OPS CHECK NORMAL. PERFORMED ELECTRICAL SYSTEM CHECK IAW 24-21-00. OPS CHECK NORMAL. RETURNED AIRCRAFT TO SERVICE. (K)