What was found
DURING FLIGHT, ACTUATOR CAUTION ON CAD WITH AMBER Y ON PFD. DURING MULTIPLE AP TEST ATTEMPTS, THE AP TEST WOULD NOT FINISH AND YIELD AN "AP TEST OK". INSTEAD, THE AP2 AND ACTUATOR WOULD APPEAR ON THE CAD ALONG WITH DFACTO XXXXX2 APPEARING ON THE SYSTEM STATUS PAGE. OCCASIONALLY, THE AP TEST WOULD YIELD A YAW SAS AND BACKUP SAS MESSAGE ON THE CAD. OCCASIONALLY, "ACTUATOR" WOULD APPEAR ON THE CAD AND ARINC XCROSS ON THE SYSTEM STATUS PAGE WITH A FAILED AP TEST. THERE WOULD BE AN OCCASIONAL AP TEST OK. ACTUATOR WAS REPLACED; TEST FLIGHT COMPLETED IAW 05-60-00, 6-1.