As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PITCH TRIM NORMAL FAIL CAS MESSAGE AT HIGH ALTITUDE. WHEN BACKUP TRIM ENGAGED PTRM BKP FAIL CAS MESSAGE. TRIM FULL DOWN AT 14.1. REPLACED THE PITCH TRIM ACTUATOR. OPS CHECKED GOOD. R & R TELESCOPING DUCT O-RING SEALS. LEAK CHECKED GOOD.