As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REFERENCE LTPR N/R 5001321690-0010 AIRCRAFT WAS NOT GROUNDED AND IS IN CHECK FOR SHCEDULED MX. DURING INCOMING CHECK FOUND EPSU BATTERIES 11WL INOP REPLACEMENT REQUIRED IAW AMM 33-51-38-000-002-A REV/98. REPLACED EPSU BATTERY AND POWER SUPPLY 11WL IAW AMM 33-51-38-400-001 CONF 00 REV. 98MX ACTION IS ACCEPTABLE.