As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED, ATT MODE-ERRATIC PITCH. DISCUSSION WITH THE PILOT REVEALED THAT THE PROBLEM OCCURED IN THE DECENT AND IN ATT MODE. THE PILOT STATED THAT HE ELECTED NOT TO USE THE VERTICAL MODE AND REPORTED THE FAULT UPON LANDING. THE CO-PILOT CYCLIC SWITCH WAS FOUND TO BE AT FAULT. MAINTENANCE REPLACED THE CO-PILOT CYCLIC CONTROL AND SWITCH WITH A SERVICEABLE UNIT. THE ACFT WAS RETURNED TO SERVICE.