As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT'S ND DISPLAY IS INOPERATIVE. REPLACED ND DISPLAY, NO HELP. SUSPECT BAD DISPLAY SELECT PANEL. PANEL IS ON AOG#4958 PART NUMBER 483-0002. ALSO CPM-GG(M010) AND CPM-GG(M011) PER MAIN MESS 31-80221 NEEDS TO BE CHECKED. REPLACED LOWER CENTER DISPLAY UNIT. TESTS OKAY.