As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EPSU BATTERY (12WL) FAILED EMERGENCY LIGHTNING CAPACITY TEST. REPLACEMENT REQUIRED IAW AMM: 33-51-38/401 REV 122. WORK ACCOMP BY LHT AS RECORDED ON LTPR NR#5001274773-0030. PERFORMED EPSU BATTERY REPLACEMENT (12WL) IAW AMM: 33-51-38-000- 002 / 33-51-38-400-002 REV 122. OPC TEST OK.