### 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 na me. 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 ma y 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 b y the Continuin g Airworthiness Division ( AARDG ) , National Aircraft Certification Branch, Trans p ort Canada, Ottawa, tele p hone 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 Communicat ions Centre (AARC) at Place de Ville, Ottawa, Ontario K1A 0N8 , or 1-800-305-2059 , or www.tc.gc.ca/civilaviation/communications/centre/ addr ess.asp 2 4-0022 ( 01-2005 ) 

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### 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 Mode l 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.