Airworthiness Directive · Amendment 39-17516 · Rudder control system
Bombardier, Inc. Airplanes
This AD applies to all airplanes specified in paragraphs (c)(1) through (c)(4) of this AD, certificated in any category.
(1) Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes.
(2) Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes.
(3) Bombardier, Inc. Model CL-600-2D15 (Regional Jet Series 705) airplanes.
(4) Bombardier, Inc. Model CL-600-2D24 (Regional Jet Series 900) airplanes.
We are adopting a new airworthiness directive (AD) for all Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440), CL- 600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD requires revising the airplane flight manual (AFM) by incorporating an emergency procedure for uncommanded yaw motion. This AD was prompted by reports of airplanes experiencing uncommanded rudder movements while in flight. We are issuing this AD to advise the flightcrew of procedures to address a possible failure of the voltage regulator inside the yaw damper actuator that could lead to uncommanded yaw movement and consequent loss of the ability to control the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 30 days after the effective date of this AD, revise the Emergency Procedures Section and the Limitations Section of the Bombardier AFM to incorporate the “Uncommanded Yaw Motion” procedure specified in paragraphs (g)(1) through (g)(3) of this AD, as applicable.
(1) For Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes: Procedure 1., Automatic Flight Control System (AFCS), of Section 03-06, Emergency Procedures—Automatic Flight Control System, of Chapter 3, Emergency Procedures, in Volume 1 of the Bombardier CRJ Series Regional Jet Model CL-600-2B19 AFM CSP A-012, Revision 61, dated April 2, 2013.
(2) For Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes: Procedure 1., Automatic Flight Control System (AFCS), of Section 03-06, Emergency Procedures—Automatic Flight Control System, of Chapter 3, Emergency Procedures, in Volume 1 of the Bombardier CRJ Series Regional Jet Model CL-600-2C10 AFM, CSP B-012, Revision 11, dated February 14, 2013.
(3) For Bombardier, Inc. Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes: Procedure 1., Automatic Flight Control System (AFCS), of Section 03-06, Emergency Procedures—Automatic Flight Control System, of Chapter 3, Emergency Procedures, in Volume 1 of the Bombardier CRJ Series Regional Jet Model CL-600-2D24 and Model CL-600-2D15 AFM, CSP C-012, Revision 7, dated February 14, 2013.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
