Airworthiness Directive · Amendment 39-19226 · Autopilot system
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model CL-600-2B16 (CL-604 Variant) airplanes, certificated in any category, serial numbers (S/Ns) 5301 through 5665 inclusive, 5701 through 5911 inclusive, 5913, and 5914.
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (CL-604 Variant) airplanes. This AD was prompted by reports of in-flight uncommanded rudder movements on airplanes with an installation similar to the installation on certain Model CL-600-2B16 (CL-604 Variant) airplanes. This AD requires modification of the wiring harness for the yaw damper control system. We are issuing this AD to address the unsafe condition on these products.
Within 48 months after the effective date of this AD: Modify the wiring harness for the yaw damper control system, in accordance with the Accomplishment Instructions of the applicable service information identified in paragraphs (g)(1) and (g)(2) of this AD.
(1) For airplanes having serial numbers (S/Ns) 5301 through 5665 inclusive: Bombardier Service Bulletin 604-22-007, Revision 01, dated July 25, 2016.
(2) For airplanes having S/Ns 5701 through 5911 inclusive, 5913, and 5914: Bombardier Service Bulletin 605-22-002, Revision 01, dated July 25, 2016.
As of the effective date of this AD, no person may install on any airplane a yaw damper actuator having part number 622-9968-002, unless the modification required by paragraph (g) of this AD has been accomplished.
