Transport Transports 

Canada Canada

 TP 7245E

 

AIRWORTHINESS DIRECTIVE

The following airworthiness directive (AD) may be applicable to an aeroplane 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 aeroplane is contingent upon compliance with all applicable ADs. Failure to comply with the requirements of an AD may invalidate the flight authorization of the aeroplane. 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 Aeroplane Certification Branch, Transport Canada, Ottawa, telephone 613 952-4357.

Pursuant to CAR 202.51 the registered owner of a Canadian aeroplane 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-2011-37

Issue Date 

 19 October 2011 

Number: CF- 2011-37 

Subject: Left Hand Engine Fuel Control Input lever Jamming 

Effective: 10 November 2011 

Applicability: Bombardier Inc. Aeroplanes: 

Model CL-600-2B16, Serial Numbers 5001 through 5194, 5301 through 5665

and 5701 through 5884. 

Model CL-600-2A12, Serial Numbers 3001 through 3066.

Compliance: As indicated below, unless already accomplished.

Background: There have been several reported incidents of jamming/malfunctioning of the 

left hand (L/H) engine thrust control mechanism on the affected aeroplanes. The 

investigation has shown that an improperly stowed or dislodged upper 

core-cowl-door Hold Open Rod, can impede a Fuel Control Unit (FCU) function by 

obstructing the movement of the FCU actuating lever arm, hence rendering the L/H 

engine thrust control inoperable. 

Due to the engine’s orientation, the subject FCU fouling is limited only to the L/H 

engine installation on the affected twin engine powered aeroplanes; however the 

potential hazard of any in-flight engine shut down caused by jammed engine fuel 

control lever is a safety concern that warrants mitigating action. 

In order to help alleviate the possibility of an in-flight engine shut down due to the 

subject fouling of the FCU lever by the core-cowl-door Hold Open Rod, Bombardier 

has issued three Service Bulletins to install a new bracket at the L/H engine upper

core-cowl-door location. This directive is issued to mandate the incorporation of the 

Service Bulletins 604-71-005, 601-0609 or 605-71-002, as applicable on the 

affected aeroplanes. 

Corrective 

Actions: 

Within 36 months or 6000 hours air time, whichever occurs first, from the effective 

date of this directive, modify the L/H engine upper core-cowl on the affected 

aeroplanes in accordance with the accomplishment instructions of the applicable 

Bombardier Service Bulletin as listed below, or later revisions of the applicable 

Service Bulletin, approved by the Chief, Continuing Airworthiness, Transport 

Canada: 
No.

N° CF-2011-37 2/2 

Aeroplane Serial Numbers Service Bulletin Issue Date 

CL- 600-2A12 3001 thru 3066 601-0609 31 Aug 2011 

CL- 600-2B16 5001 thru 5194 601-0609 31 Aug 2011 

CL- 600-2B16 5301 thru 5665 604-71-005 18 July 2011 

CL- 600-2B16 5701 thru 5884 605-71-002 18 July 2011 

Authorization: For the Minister of Transport, Infrastructure and Communities 

ORIGINAL SIGNED BY 

Robin Lau 

Acting Chief, Continuing Airworthiness 

Contact: A.K. Durrani, Continuing Airworthiness, Ottawa, telephone 613-952-4357, facsimile 

613-996-9178 or e-mail CAWWEBFeedback@tc.gc.ca or any Transport Canada 

Centre.