As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC AND VTK CRUISE -ROLE ON CAPT FMS. NO OTHER INDICATIONS. VTK WENT AWAY WITHOUT ANY ABNORMAL PROCEDURE ACTION EXECUTED. ALL INDICATIONS NORMAL. POSITION SHIFT PAGE BEARING AND DISTANCE INFORMATION PRESENT LEFT FMC 0.0 DME. RT FMC DME 0.0. ACFT GROUNDED. REPLACED NR 1 FMC. OPS CHECKED GOOD. REF AMM 34-61-02.