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)

1/1 No.

CF-2011-18

Issue Date 

 07 July 2011 

Number: CF- 2011-18 

Subject: Integrated Drive Generator Wire Chafing in Aft Equipment Bay

Effective: 20 July 2011 

Applicability: Bombardier Inc. Aeroplanes Model CL-600-2B19, Serial Numbers 7003 and subsequent

Compliance: As indicated below, unless already accomplished. 

Background: There has been one reported case of an aft equipment bay fire occurring due to arcing of 

chafed integrated drive generator (IDG) power cables. Additionally, the hydraulic line support 

brackets located at the fuselage station (FS) 672 have been found broken in service on 

several aeroplanes. A broken hydraulic line support bracket at FS672 could result in 

inadequate clearance between the IDG power cables and hydraulic lines, potentially resulting 

in chafing of the IDG power cables. Chafed IDG power cables can generate high energy 

arcing, which can result in an uncontrolled fire in the aft equipment bay. 

This directive mandates the detailed visual inspection and, if required, rectification of the IDG 

power cables and hydraulic line support bracket. 

Corrective 

Actions: 

Part I - Detailed Visual Inspection 

Within 45 days from the effective date of this directive, perform a detailed visual inspection 

from FS652 to FS672, between stringers 8R and 10R for chafed IDG power cables and 

cracked or broken hydraulic line support bracket at FS672. 

Replace any IDG power cables showing any sign of chafing or damage and replace any 

cracked or broken hydraulic line support brackets. 

Note: Follow manufacturer standard practices when performing the above tasks. 

Part II - Reporting requirements 

Within 7 days after the above inspection is completed, report any findings to Bombardier 

Aerospace via the Bombardier Regional Aircraft Customer Response Center. 

Authorization: For the Minister of Transport, Infrastructure and Communities 

ORIGINAL SIGNED BY 

Derek Ferguson 

Chief, Continuing Airworthiness 

Contact: Miss Helen Tsai, Continuing Airworthiness, Ottawa, telephone 613-952-4357, facsimile 

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