As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LNAV WILL NOT ENGAGE. ACCOMPLISHED FMCS BITE CHECK PER FIM 34 61 TASK 801. FMCS LEFT AND RIGHT SENSOR STATUS ALL OK. FMCS LEFT IN FLT FAULTS FLT LEG 1 FMC RIGHT SHOWS LEFT FAIL. ACCOMPLISHED FIM 34 61 TASK 807 TO FMC LEFT FMC PROMPTS SHOW TASK PASSED. ACCOMPLISHED FIM 34 61 TASK 807 TO FMC RIGHT PROMPT OK ALL TASK PASSED.