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AD Number: CF-2014-44

Issue Date: 9 December 2014

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.

Number: CF-2014-44 Effective Date: 23 December 2014

ATA: 27 Type Certificate: A-131

Subject: Flight Controls – Elevator Control System – Disconnect

Applicability: Bombardier Inc.

Model CL-600-2C10 aeroplanes, serial numbers 10002 through 10337,

Models CL-600-2D15 and CL-600-2D24 aeroplanes, serial numbers 15001 through

15298.

Compliance: Within 9200 hours air time or 5 years, whichever occurs first, from the effective date of 

this AD, unless already accomplished.

Background: During an engineering review of the Elevator Control system, it was discovered that a 

disconnect between the elevator lever and control rod could lead to uncommanded 

elevator movement of the associated control surface. This uncommanded movement may 

cause a large difference between the position of the left and the right elevator control 

surface resulting in reduced controllability of the aeroplane and degradation of the 

structural integrity of the horizontal stabilizer.

This AD mandates the replacement of the existing elevator lever assemblies and control 

rods with newly designed ones, which will prevent a disconnect between the components 

of the elevator control system should a failure occur.

Corrective Actions:

Remove and replace the left and the right fixed control rods and lever assemblies of the 

elevator control system with the new design. Bombardier Aerospace (BA) Service 

Bulletin (SB) 670BA-27-062, Revision B, dated 10 October 2014, or later revisions 

approved by the Chief, Continuing Airworthiness, Transport Canada, provides approved 

instructions for replacing the fixed control rods and lever assemblies of the elevator 

control system.

Bombardier Aerospace SB 670BA-27-062, Initial Issue, dated 12 December 2013, or 

Revision A, dated 1 April 2014, also provides approved instructions for replacing the fixed 

control rods and lever assemblies of the elevator control system.

Authorization: For the Minister of Transport, 

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.

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. 

For all changes to your mailing address, contact your TC Regional Aircraft Registration Office at 1-800-305-2059,

option 1 for English, 2 for Aircraft Registration and then select the appropriate region.

24-0022 (01-2005)