As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AS THE FLYING PILOT, SMELLED SMOKE AND SAW FLAGS ON THE STNDBY ATTITUDE INDICATOR. MY PARTNER SAW IT AT THE SAME TIME AND TURNED OFF THE STANDYBY INDICATOR. THAT REDUCED THE SMELL. DEPLOYED THE MASKS AND DIVERTED. VERIFIED ATTITUDE INDICATOR IS INOPERATIVE AND SMELLS OF SMOKE. REMOVED INDICATOR AND INSTALLED EXCHANGE REPAIRED UNIT IAW MM 34-22-00. OPS CHECKED GOOD.