What was found
DURING HEAVY MAINTENANCE: DURING THE OPERATIONAL TEST OF THE PASSENGER CREW DOOR EMERGENCY LIGHT SYSTEM SHOW A FAULT MESSAGE BAT/EPSU(10WL) IN THE PASSENGER CABIN; REF NR 2022-631495 WO 2022 410/1 REMOVED AND REPLACED BATTERY OF EPSU FIN 10WL IN PASSENGER CABIN IAW AMM 33-51-38-000-002-A AND AMM 33-51-38-400-002-A. AND PERFORMED AN OPERATIONAL CHECK OF THE EMERGENCY POWER SUPPLY UNIT BY BITE - CHECK IAW AMM 33-51-00-710-001. AND THE TEST IS GOOD.