As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUAL FMC FAIL IN FLIGHT. MOMENTARY LOSS OF LNAV/VNAV. RECOVERED MOMENTARY SINGLE FMC OPERATION ON THE GROUND. GROUNDED - YES. PERFORMED FMC BIT CK PER B737-800 FIM 34-61 TASK 801 CK PASSED. PERFORMED CPDCL FUNCTION TEST B737-800 AMM 34-61-00. CK OK.