As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: INFLIGHT AT CRUISE INTEGRATED STANDBY FLIGHT DISPLAY ATTITUDE BEGAN WANDERING UP TO 10 DEGREES NOSE HIGH, 25 DEGREES NOSE LOW, 40 DEGREES BANK. HOG ALTITUDE AND AIRSPEED NORMAL. AIRCRAFT DIVERTED TO MIA. REMOVED AND REPLACED INTEGRATED STANDBY FLIGHT DISPLAY PER AMM 34-24-02.