What was found
(CAN) BA SER CASE : 45106 SER - ETOPS - AFTER ENG START EPC 3 INOP (RETURN TO GATE) AFTER ENG START ADVISORY ELECTRICAL FAULT EPC 3 INOP/00:00 RETURN TO GATE RTM CAPTURED 4 EVENT. FC 2423F0006 POWER DOWN AND UP DID CLEAR THE FAULT BUT CAME BACK AFTER ENG START. TS-ORDER: EPC INOP PERFORM ENG RUNUP WITH GEN 1 AND 2 ONLINE. OBSERVE INFO MSG FOR EPC INOP AND ADV MSG ELECTRICAL FAULT EXPERIENCE SHOWS AFTER LONG POWERDOWN RECOVER FUNCTION. EMPCU OPC TEST PERFORMED. NO FAULTS FOUND. GLC 2 RELAY IN EPC2 REPLACED. CABLE AND INSERT INSPECTED, WITH NO FINDINGS. TEST PERF. SATIS. -> GLC #2 CONTACTOR: P/N: 5915605-114 (TC# 20190522003)