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.

1/1 No.

CF-2014-20

Issue Date

9 July 2014

Number: CF-2014-20

ATA: 71 Type Certificate: A-131

Subject: Power Plant - Engine Fan Cowl Panel Dislodgement During Flight

Effective Date: 23 July 2014

Applicability: Bombardier Inc. model CL-600-2B19 aeroplanes.

Compliance: Within 6000 hours air time from the effective date of this AD, unless already 

accomplished.

Background: There have been a number of engine fan cowl panel dislodgement incidents reported on 

the Bombardier CL-600-2B19 aeroplane fleet. The dislodged panels may cause damage 

to the fuselage and flight control surfaces of the aeroplane. Also, the debris from a 

dislodged panel may result in runway contamination and has the potential of causing injury

on the ground.

Although the majority of the subject panel dislodgements were reported on the first or 

second flight after an engine maintenance task was performed that required removal and 

reinstallation of the subject panels, the frequency of the dislodgements indicates that the 

existing attachment design is prone to human (maintenance) error. 

Bombardier has attempted to mitigate this issue by issuing maintenance advisories

emphasizing the proper installation of engine fan cowl panels. In order to further mitigate

the potential safety hazard of the subject panel dislodgement, Bombardier has issued 

Service Bulletin (SB) 601R-71-034 to install additional fasteners for the attachment of the 

engine fan cowl panels to the nacelle’s structure. 

This AD is issued to mandate compliance with Bombardier SB 601R-71-034.

Corrective 

Actions:

Modify the left and right fan cowl access panels and the nacelle attaching structures to 

facilitate installation of additional fasteners on all affected aeroplanes in accordance with 

Bombardier SB 601R-71-034, dated 31 March 2014.

Authorization: For the Minister of Transport,

ORIGINAL SIGNED BY

Derek Ferguson

Chief, Continuing Airworthiness

Contact: A.K. Durrani, 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. 

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)