What was found
RIGHT FMC FAILS/RESTARTS INTERMITTENTLY. GROUNDED - YES. ACCOMPLISHED T/S PER B737-900 FIM 34-61 TASK 836 - FOUND RIGHT FMC REBOOTING TO BE CAUSED BY LEFT FMC. REMOVED AND REPLACED LEFT FLIGHT MANAGEMENT COMPUTER PER B737-900 AMM 34-61-02-000-801/AMM 34-61-02-400-801. VERIFIED FMC OPS SOFTWARE 556909-001, MEDB SOFTWARE BCG-01T-A0, LDDB SOFTWARE 557362-004, AND ADDB SOFTWARE ASA1007A ALREADY INSTALLED IN NEW FMC. CROSSLOADED FMC OPC SOFTWARE BCG-01T-61 AND NAV DATABASE SOFTWARE ASA1191101 FROM FMC-R PER AMM 34-61-00-470-806. PERFORMED FMCS PERFORMANCE FACTORS - ADJUSTMENT PER AMM 34-61-00-800-801 AND FLIGHT MANAGEMENT COMPUTER SYSTEM - OPERATIONAL TEST PER AMM 34-61-00-710-801 - ALL TESTS PASS.