What was found
AIRCRAFT FAILED AP TEST DURING START RUN-UP. TROUBLESHOOTING REVEALED YAW PORTION OF AP TEST FAILS. REMOVED AND REPLACED YAW TRIM MOTOR IAW AMM 67-14-00, 4-1.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT FAILED AP TEST DURING START RUN-UP. TROUBLESHOOTING REVEALED YAW PORTION OF AP TEST FAILS. REMOVED AND REPLACED YAW TRIM MOTOR IAW AMM 67-14-00, 4-1.