As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MOMENTARY (1 MINUTE ) VTK ON FO ND DISPLAY EITH LODD OF LNAV & VNAV AND "MAP" DISPLAYED. PROBLEM SELF CORRECTED IN ONE MINUTE. GROUNDED - YES. FOUND RIGHT FMC FAULT LOGGED AS "PRES POS LAT RATE" ACCOMPLISHED B737-900 FIM 34-61 TASK 824 'ADIRS INPUT PROBLEM' WITH NO CURRENT DISCREPANCIES - FMC BITE OK REF FIM 34-61 TASK 801.