As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A ROUTINE FLIGHT IT WAS NOTED DURING THE DESCENT AND APPROACH THAT THE CO-PILOT ATTITUDE INDICATOR BECAME UNSERVICEABLE. THE FLIGHT AND LANDING CONTINUED WITHOUT COMPLICATIONS. AN AVIONICS REPAIR SHOP WAS CONTRACTED VIA P/O TO REPAIR UNIT HOWEVER THE UNIT FAILED ALMOST IMMEDIATELY. THE ORIGINIAL LOANER WAS REINSTALLED AND THE SYS WAS GROUND FUNCTION CHECKED SERVICEABLE.