As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: DON'T PASS OPERACIONAL TEST ON EMERGENCY LIGHTING SYSTEM AT PAX CABIN. REF AEROMAN WO 2022-326/1 NRC 2022-597512; REMOVED AND REPLACED EPSU BATTERY 11WL IAW AMM33-51-38-000-002-A AND AMM 33-51-38-400-002-A PERFORMED OPERATIONAL TEST 33-51-00-710-001-A TEST IS OK. TRANSFERRED TO NRC 2022-597512 WO 2022-326/1.'