Transport Transports 

Canada Canada

 TP 7245E

 

AIRWORTHINESS DIRECTIVE

The following airworthiness directive (AD) may be applicable to an aircraft which our records indicate is registered in your name. ADs are issued pursuant to Canadian 

Aviation Regulation (CAR) 521 Division X. Pursuant to CAR 605.84 and the further details of CAR Standard 625, Appendix H, the continuing airworthiness of a Canadian registered aircraft is contingent upon compliance with all applicable ADs. Failure to comply with the requirements of an AD may invalidate the flight authorization of the aircraft. Alternative means of compliance shall be applied for in accordance with CAR 605.84 and the above-referenced Standard. 

This AD has been issued by the Continuing Airworthiness Division (AARDG), National Aircraft Certification Branch, Transport Canada, Ottawa, telephone 613 952-4357.

Pursuant to CAR 202.51 the registered owner of a Canadian aircraft shall, within seven days, notify the Minister in writing of any change of his or her name or address. 

To request a change of address, contact the Civil Aviation Communications Centre (AARC) at Place de Ville, Ottawa, Ontario K1A 0N8, or 1-800-305-2059, or www.tc.gc.ca/civilaviation/communications/centre/ address.asp 

24-0022 (01-2005)

1/2 No.

CF-2013-13

Issue Date 

 28 May 2013 

Number: CF-2013-13 

Subject: Rudder Controls - Yaw Damper Uncommanded Movement 

Effective: 11 June 2013 

Applicability: Bombardier Inc. model CL-600-2B19, CL-600-2C10, CL-600-2D15, 

and CL-600-2D24 aeroplanes. 

Compliance: As indicated below, unless already accomplished. 

Background: There have been several reported incidents where Bombardier Regional Jet aeroplanes 

experienced in flight uncommanded rudder movements. Investigation revealed that a 

failure of the voltage regulator inside the yaw damper actuator could lead to 

uncommanded yaw movement. If not corrected, this condition could lead to the loss of 

the aeroplane. 

This AD mandates the introduction of an emergency procedure to the Aeroplane Flight 

Manual (AFM) to address the above mentioned unsafe condition. 

Corrective 

Actions: 

A. Within 30 days from the effective date of this AD, accomplish the following: 

Amend the applicable AFM by incorporating the emergency procedure for 

uncommanded yaw motion: 

Aeroplane Model AFM Procedure AFM Revision 

CL-600-2B19 Emergency Procedures 

- Uncommanded Yaw 

Motion 

AFM Revision 61, dated April 02, 

2013, or later revisions of this 

procedure approved by Transport 

Canada 

CL-600-2C10 Emergency Procedures 

– Uncommanded Yaw 

Motion 

AFM Revision 11, dated February 

14, 2013, or later revisions of this 

procedure approved by Transport 

Canada 

CL-600-2D15 Emergency Procedures 

– Uncommanded Yaw 

Motion 

AFM Revision 7, dated February 

07, 2013, or later revisions of this 

procedure approved by Transport 

Canada 

CL-600-2D24 Emergency Procedures 

– Uncommanded Yaw 

Motion 

AFM Revision 7, dated February 

07, 2013, or later revisions of this 

procedure approved by Transport 

Canada 
No.

N° CF-2013-13 2/2 

B. Advise all flight crews of the changes introduced by AFM Revisions listed above. 

Authorization: For the Minister of Transport, Infrastructure and Communities, 

ORIGINAL SIGNED BY 

Derek Ferguson 

Chief, Continuing Airworthiness 

Contact: Gordanko Jeremic, Continuing Airworthiness, Ottawa, telephone 613-952-4357, facsimile 

613-996-9178 or e-mail AD-CN@tc.gc.ca or any Transport Canada Centre.