As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REFERENCE LTPR NR 5001334222-0010 AIRCRAFT WAS NOT GROUNDED AND IS IN CHECK FOR SCHEDULED MX. DURING INCOMING CHECKS FOUND EPSU BATTERIES 10 WL INPO REPLACEMENT REQUIRED IAW AMM 33-51-38-000-002-A REV. 99. REPLACED EPSU BATTERY AND POWER SUPPLY 10WL IAW AMM 33-51-38-400-002-A REV. 99.