What was found
DURING TAKEOFF LNAV AND VNAV WOULD ENGAGE BUT WOULD NOT CAPTURE GREEN LIGHTS ON FMA AND WHITE LIGHTS ON ANNUNCIATOR (ADI) UNDER ATT-ROLL MODES ANNUNCIATOR SHOWED ALT AND HDG HOLD (MODES) AP WAS NOT FUNCTIONAL (CTR). ALSO ON CLIMB-OUT WHEN VNAV ENGAGED, AT DISENGAGED 3404134 046138 07F631 LT. MCDP LAST LEG FAULTS IND FMC L-TMC, FMC L-R CH AND FD BAR MODES ERROR. REMOVED AND REPLACED LEFT FMC PER AMM 34-61-01 AND DATA CROSSLOAD PER AMM 34-61-00. LEFT FMC NORMAL. ACCOMPLISH MCDP TEST NR 40 AND TEST NR 59 NO FAULTS NOTED. BOTH TEST PASSED PER AMM 22-00-02. AIRCRAFT LMP STATUS RETAINED LAND 3. ACCOMPLISHED TSI NR 22-00/0004771, REPLACED NR 1 FCC. GROUND OPS CHECK OK, 22-11-01. ACCOMP MCDP TEST 30. NO FAULTS NOTED. A/C LMP STATUS OK TO REMAIN AT LAND 3.