As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, STANDBY ATTITUDE INDICATOR IN CRUISE, ARTIFICIAL HORIZON DRIFTED TO 10 DEGREES RT AND 10 DEGREES PITCH UP. CREW RE-CAGED STANBY ATTITUDE INDICATOR PERFORMED NORMAL REST OF FLIGHT. PERFORMED NORMAL POWER UP AND TEST OF STANDBY ATTITUDE INDICATOR OPERATES NORMALLY, OK FOR SERVICE