Document ID: chunk:federal_register_of_legislation:F2009L02773:body:0:p1
Version: federal_register_of_legislation:F2009L02773
Segment Type: other
Provision Reference: 
Character Range: 0–3234

AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes
AD/CL-600/114  Landing Gear Alternate Extension System  8/2009

Applicability:  Bombardier Inc. Models CL-600-2C10 (Regional Jet Series 700 and 701) - Serial Numbers 10003 through 10216 CL-600-2D15 (Regional Jet Series 705) and
                CL-600-2D24 (Regional Jet Series 900) - Serial Numbers 15001 through 15039.
Requirement:       1. Bypass Valve - Clevis Replacement:

                   Replace the existing clevis with a new clevis, P/N 2323H037, in accordance with Part A of the Accomplishment Instructions in Alert Service Bulletin (ASB) A670BA-32-022, Revision A, dated 1 May 2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                   Replacement of the existing clevis in accordance with Part A of the original issue, dated 8 November 2007, of ASB A670BA-32-022 also meets the intent of Requirement 1 of this AD.

                   It is not necessary to replace the clevis if Part III of this AD has already been accomplished.

                   2. Downlock Assist Valve - Clevis Replacement:

                   Replace the existing clevis with a new clevis, Part Number 2323H037, in accordance with Part B of the Accomplishment Instructions in ASB
                   A670BA-32-022, Revision A, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                   Replacement of the existing clevis in accordance with Part B of the original issue, dated 8 November 2007, of ASB A670BA-32-022 also meets the intent of Requirement 2 of this AD.

                   It is not necessary to replace the clevis if Part III of this AD has already been accomplished.

                   3. Installation of Support Brackets:

                   Install new support brackets for the bypass valve and downlock assist valve in accordance with Part C of the Accomplishment Instructions in ASB
                   A670BA-32-022, Revision A, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

             Note:  Transport Canada AD CF-2009-22 dated 14 May 2009 refers.
Compliance:  For Requirement 1:

                If, at the effective date of this AD, the bypass valve, Part Number (P/N) 53342-3, has accumulated 9,400 flight cycles (FC) or less, replace the clevis before the valve has accumulated 10,000 FC.

                If, at the effective date of this AD, the bypass valve has accumulated more than 9,400 FC, replace the clevis within 550 flight