What was found
DURING HEAVY MAINTENANCE, SECONDARY FINDING: FAULT MESSAGE ON PTP EPSU UNIT EMER R; REF AE NR 2022-48525, W/O 2022-16/1......REMOVED AND REPLACED EPSU 12WL I.A.W. AMM 33-51-38-000-001-A AND AMM 33-51-38-400-001-A, PERFORMED OPERATIONAL CHECK OF EMERGENCY POWER SUPPLY UNIT BY BITE CHECK I.A.W. AMM 33-51-00-710-001-A. CHECK IS OK WORK DONE BY 90669, CK'D BY 8615818.