What was found
AT CRUISE FLIGHT GOT VTK ON CPT MAP AND BOTH FMC WENT BLANK AND 10 SECONDS EVERUTHING PERFORMED TO NORMAL. GROUNDED - YES. PERFORMED FMC RESET PER B737-900 FIM 34-66 TASK 836. OPS CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AT CRUISE FLIGHT GOT VTK ON CPT MAP AND BOTH FMC WENT BLANK AND 10 SECONDS EVERUTHING PERFORMED TO NORMAL. GROUNDED - YES. PERFORMED FMC RESET PER B737-900 FIM 34-66 TASK 836. OPS CHECK NORMAL.