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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) 593 . 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 invalidat e 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 Can ada, 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 Communica tions 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-2004-01R2

Issue Date 29 September 2009

Number: CF-2004-01R2

Subject: Engine Throttle Control Gearbox

Effective: 15 October 2009

Revision: This revision supersedes Airworthiness Directive (AD) CF-2004-01R1 dated 12 April 2005.

Applicability: All Bombardier Inc. model CL-600-2B19 aircraft that have engine Throttle Control Gearbox (TCGB) Part Number (P/N): 2100140-003 or 2100140-005 or P/N 2100140-007

installed.

Compliance: When indicated, unless already accomplished.

Background: There has been numerous reported failures of the Regional Jet engine TCGB P/Ns: 2100140-003, 2100140-005 & 2100140-007. Some of these failures have resulted in in-flight engine shutdowns. Post incident inve stigations revealed t hat excessive wear within the engine TCGB could alter the rigging pos ition or cause the throttle to jam. With the rigging position altered, movement of the throttle lever towards the idle position can result in throttle moving too close to the fuel shut-off position, which potentially, can cause the engine to flame out.

Bombardier issued Service Bulletin (SB) 601R-76-019 dated 21 August 2003, to introduce an inspection of, and if required, r eplacement of the throttle control gearbox with a serviceable unit. AD CF-2004-01 was originally issued to mandate the subject inspection requirement as per SB 601R-76-019 and subsequent revisions.

The subject TCGB inspection requirements m andated as per the earlier versions of this AD, are now transcribed in a new Certific ation Maintenance Requirement (CMR) task.

This revision is issued to mandate the inco rporation of the new CMR task into the CL-600-2B19 Maintenance Requirements Manual (MRM), as introduced by the MRM Temporary Revision (TR) 2A-47.

Corrective

Actions: Within 30 days from the effective date of this revision, update your CL-600-2B19 MRM document (CSP A-053) to incorporate the TR 2A-47 for compliance with CMR Task # C76-11-127-01 requirements.

Authorization: For Minister of Transport, In frastructure and Communities

Derek Ferguson Chief, Continuing Airworthiness

Contact: Mr. A. K. Durrani, Continuing Airworthine ss, Ottawa, telephone (613) 952-4357, facsimile (613) 996-9178 or e-mail CAW WEB Feedback@tc.gc.ca or any Transport Canada

Centre.