As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - CAPTS ADI & HSI WENT BLANK WITH SG FAIL MESSAGE DISPLAYED IN BOTH INDICATORS, SELECTING ALT EFI CORRECTED FAULT. AFTER A COUPLE OF MIN RESELECTED CAPTS EFI AND DISPLAY WAS NORMAL. PERFORMED EFIS SYMBOL GEN TEST IAW 34-22-01-864-015 PERFORMED EFIS BITE PROCEDURE IAW FIM 34-22-00/101 FIG 108 SHEET 1 ALL CHECKS ARE GOOD SYS OPERATES NORMAL.