What was found
NR 2 ENGINE FAILED WHILE ON TAXI, POST FLT REPORTS NO FAULTS. FADEC TEST CHANNEL 2A & 2B, NO FAULTS. MOTORING TEST, NO FAULTS. FADEC CH 2A & 2B RESET. ENG RUN CARRIED OUT. NO FAULTS. CONS SERV MOCR A WITH NO PRESENT FAULT BUT DUE TO SEVERAL SYS DISRUPTIONS CAUSED BY 73-21-50 02J8, HMU(FMV TM), ECU ENG2B EIU2 FADEC & ACCOCIATED 77-00-00, ENG 2 FADECXX & 77-00-00 ENG 2 FAIL AND IDENTICAL FAULTS IN AIMS FOR THE PAST SEVERAL WEEKS, FURTHER T/S REQ. ECU REPLACED IAW AMM 73-21-60-PB 401. LAND 3 TEST-NO FAULTS.