Transport Transports Canada Canada TP 72 45E



# 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 . Pu rsuant 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 invali date 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 Aircraf t Certification Branch, Transport Canada, Ottawa, telephone 613 952

- 4357. 1 / 1 No

. CF

- 201 4

- 20
Issue Date 9 July 2014

Number: CF

- 201 4

- 20

ATA: 71 Type Certificate: A

- 131
Subject: Power Plant

- Engine Fan Cowl Panel Dislodgement During Flight

Effective Date : 2 3 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. T he dislodged panels may cause damage to the fus elage 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 , t he frequency of the dislodgement s indicate s that the existing attachment design is prone to human (maintenance) error.

B ombardier has attempted to mitigate this issue by issuing m aintenance advisor ies emphasiz ing the proper installation of engine fan cowl panels

. I n order to further mitigate the potential safety hazard of the subject panel dislodgement, Bombardier has issue d S ervice B ulletin ( 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: M odify the left a nd right fan cowl access panels and the nacelle attaching structure s to facilitate installation of additional fasteners on all affect ed aeroplanes in accordance with B ombardier SB 601R

- 71

- 034
, dated 31 March 2014.

Authorization: For the Minister of Transp ort,

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 requ est 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)