As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU CONTROL APUC DETECTED FAILURE OF REDUNDANT CONTROL FUNCTION OR LOSS OF ONE ARINC 629 CHANNEL. STATUS -FAULTED LUBE CLUSTER. REPLACEED APU LUBE CLUSTER PER MM. REPLACED LUBE CLUSTER. REPLACED APU CONTROLLER. MESSAGE WENT AWAY. MESSAGE RETURNED AT NEXT APU START. RAN TEST IN MAT. PASSED. RAN TEST PER AMM, PASSED CLEARED MESSAGE, OPS CHECK GOOD.