As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC FAIL DESCENDING THROUGH 10,000'. GROUNDED - YES. LH FMC FAULTED ON EVERY LEG ACCORDING TO L AND R FMC. REMOVED AND REPLACED LH FMC WITH S/N 06101 REF B737-900 AMM 34-61-02. ALL SOFTWARE VERIFIED AND CROSSLOADED FROM RH SIDE. PERF FACTORS ADJUSTED AS WELL. FMC TRANSFER SWITCH RETURNED TO NORMAL POSITION. GROUND VERIFICATION SUCCESSFUL.