As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EICAS MESSAGE FOR LOSS OF ALL 3 IRU BATTERIES. NEXT EICAS MESSAGES FOR APU SPAR VALVE AND BOTH ENGINE SPAR VALVES. NEXT 30 MINUTES LOST THE CLOCKS WITH EICAS MESSAGE. CREW DIVERTED TO TER. REPLACED MAIN BATTERY CHARGER, MAIN BATTERY AND MAIN BATTERY CONNECTOR. ALL MESSAGES CLEARED. REPLACED MAIN BATTERY PER 24-31-01. SEE ALSO AALA20180216001 & AALA201805229015.