Summary
We propose to adopt a new Airworthiness Directive (AD), for certain Bombardier, Inc., Model CL-600-2B16 (CL-604 Variant) airplanes. This proposed AD was prompted by reports of in-flight uncommanded rudder movements. This proposed AD would require modification of the wiring for the yaw damper control system. We are proposing this AD to address the unsafe condition on these products.