As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: REFERENCE LOG PAGE LP264465 ITEM #1, AIRCRAFT WAS NOT GROUNDED AND WAS AN OVERNIGHT LINE MX CHECK. EPSU TEST FAULT. CORRECTIVE ACTION: REMOVED AND REPLACED 10WL EPSU BATTERY PER AMM 33-51-38-000-002-A AND 33-51-38-400-002-A. OPS TEST GOOD PER AMM 33-51-00-710-001 TEST PASS.//END//