As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROX 260FL LT FMC FAILED. RAN CHECK LIST. FIXED ITSELF. CONFIRMED POSITION WITH ATC AND ALT NAVS. NO FURTHER ISSUES. ACFT GROUNDED. LT FMC LOGGED INTERMITTANT PPOS LAT RATE. COULD NOT DUPLICATE MALFUNCTION. LT. FMC OP CK NORMAL REF MM 34-61-00-710-801.