As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: FAULT HAPPENED DURING A RON MAINTENANCE VISIT, NO FLIGHT DELAY AS A RESULT. AC WAS NOT GROUNDED AS A RESULT OF THE SDR REPORTABLE EVENT. REFERENCE LP498087 #3 DURING CIDS EPSU TEST 13WL BATTERY FAULT FOUND. CORRECTIVE ACTION: REMOVED AND REPLACED 13WL BATTERY IN REF TO AMM 33-51-38-400-002-A. PTT OPS CHECKED GOOD AT UNIT 13WL. OK FOR SERVICE. /END/.