Twin Commander Aircraft has released Custom Kit (CK) 203 pertaining to the elevator and rudder trim potentiometer. The kit applies to all JetProp models (690C, 690D, 695, 695A and 695B). The elevator and rudder trim potentiometer detects position and movement of pitch and yaw trim control surfaces, and sends a signal to the cockpit trim indicators.
CK203 provides approval, instructions and piece parts for the elevator and rudder trim potentiometer replacement (part numbers 85026-503 and 850633-503). Those parts no longer were available, and service centers repairing potentiometers were having to buy alternative parts that required trimming and FAA 337 field approval. No trimming or field approval is required when installing CK203.
Estimated time to remove old parts and replace them with CK203 is 1 hour for the rudder and 1.5 hours for the elevator.
For more information, contact an authorized Twin Commander service center. http://twincommander.com/service-centers/