As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: INOP EMERGENCY POWER SUPPLY UNIT EPSU 10WL AT FWD GALLEY AREA (UNIT FAULT); REF AEROMAN WO 2023 282/1 NR 2023-463823. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT EPSU 10WL AT FWD GALLEY AREA IAW AMM 33-51-38-000-001-A, AMM 33-51-38-400-001-A STEP 1 THRU 4.F. TOOL USED MILLIOHMETER PN:97F92003500000, SN: BL5027, DUE DATE: JUN-22-2024.'