AD/DHC-8/146 Main Landing Gear Stabiliser Braces (Cth)
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 (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes
| AD/DHC-8/146 | Main Landing Gear Stabiliser Braces | 5/2009 TX |
Applicability: | DHC-8 aircraft, Models 400, 401 and 402, serial numbers 4001, 4003 and subsequent. |
Requirement: | Action in accordance with the requirements of Transport Canada AD CF-2009-11. |
Compliance: | As specified in the Requirement document, with a revised effective date of |
| This Airworthiness Directive becomes effective on 17 March 2009. | |
Background: | Several reports were received of failures of the aft hinge of the main landing gear forward stabiliser brace. Laboratory examinations revealed that the fatigue cracks initiated from the dowel pin hole at the aft hinge lug of the main landing gear forward stabiliser brace where the stop bracket is attached. Failure of the stabiliser brace could result in collapse of the main landing gear. |
David Villiers
Delegate of the Civil Aviation Safety Authority
16 March 2009
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