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AD/CL-600/119 Amdt 1 - Power Control Unit Rod Centering Mechanism
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AD/CL-600/119 Amdt 1 - Power Control Unit Rod Centering Mechanism
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| AD/CL-600/119 Amdt 1 | Power Control Unit Rod Centering Mechanism | 11/2009 DM |
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| Applicability: | Bombardier Inc. Models:CL-600-2C10, serial numbers 10003 to 10259.CL-600-2D15 and CL-600-2D24, serial numbers 15001 to 15099. |
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| Requirement: | Install the new Elevator Power Control Unit (PCU) centering mechanism in accordance with Accomplishment Instructions in Part 2 of Bombardier Aerospace Service Bulletin 670BA-27-042, Revision B, dated 2 June 2009, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.Incorporation of Bombardier Aerospace Service Bulletin 670BA-27-042, Original Issue, dated 14 October 2008, or Revision A, dated 8 January 2009, meets the intent of this AD only if Bombardier Aerospace Repair Engineering Order (REO)670-27-31-001, or Service Non-Incorporated Engineering Order (SNIEO) S01 or S02 from kit drawing KBA670-93702 is also incorporated at the same time.Note: Transport Canada AD CF-2009-28R1 dated 14 August 2009 refers. |
| Compliance: | Within 6,000 flight hours after the effective date of this AD. |
| This Amendment becomes effective on 24 September 2009. | |
| Background: | During a PCU Centering Functional Check on two CL-600-2C10 aircraft, sustained oscillations were discovered when a control rod was disconnected. These sustained oscillations could render the elevator surface inoperable and cause subsequent loss of pitch control of the aircraft.This AD mandates incorporation of a new centering mechanism on the elevator torque tube to prevent these sustained oscillations.This amendment corrects date of Revision B of the referenced SB. |
| The original issue of this AD becomes effective 24 September 2009. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
2 September 2009