What was found
IN CRUISE FLIGHT LEVEL AT FL370 MACH.77 VTK DISPLAYED ON FO ND SINGLE FMC OPERATION ON SCRATCHPAD. GROUNDED - YES. REMOVED & REPLACED FMCS #2 AND PERFORMED GOOD INSTALLATION TEST AMM 34-61-02/401.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
IN CRUISE FLIGHT LEVEL AT FL370 MACH.77 VTK DISPLAYED ON FO ND SINGLE FMC OPERATION ON SCRATCHPAD. GROUNDED - YES. REMOVED & REPLACED FMCS #2 AND PERFORMED GOOD INSTALLATION TEST AMM 34-61-02/401.