As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PITCH TRIM NEUTRAL FAIL CASS MESSAGE COMES ON IN DESCENTS (BETWEEN SETTINGS OF 13.5 -13,9 ). REMOVED AND REPLACED PITCH TRIM ACTUATOR ON 467500-1003. REMOVED SN 0141 AND INSTALLED SN 0058. ACCOMPLISHED HORIZONTAL STABILIZER ELECTRICAL STOP-FUNCTIONAL CHECK, CHECKS GOOD.