What was found
DURING TAXI OUT, FMC DISAGREE MESSAGE APPEARED. ACFT GROUNDED. ACCOMPLISHED QRH PROCEDURE. FMC MESSAGE NO LONGER DISPLAYED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TAXI OUT, FMC DISAGREE MESSAGE APPEARED. ACFT GROUNDED. ACCOMPLISHED QRH PROCEDURE. FMC MESSAGE NO LONGER DISPLAYED.