AD/DHC-8/125 - Main Landing Gear Shock Strut Piston (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-8/125 Main Landing Gear Shock Strut Piston 8/2006

Applicability: Bombardier Inc. DHC-8 Models 101, 102, 103, 106, 201, 202, 301, 311, 314 and 315, serial numbers 003 through 618. Requirement: 1. Applicable to Bombardier DHC-8 Models 311, 314 and 315, serial numbers 202 through 516, with main landing gear (MLG) shock struts in the serial number range DCL3501/90 to DCL3768/97 installed. Also all spare main landing gear shock struts in the same serial number range.

Remove the anti-rotation needle roller from the upper bearing of the main landing gear shock strut by incorporating Modsum 8/3331 in accordance with Bombardier Service Bulletin 8-32-144 Revision A, dated 29 April 2002, or later Transport Canada approved revisions.

Note 1: Previous incorporation of Modsum 8/3331, in accordance with the Accomplishment Instructions in the original issue of Bombardier Service Bulletin 8-32-144, dated 10 August 1998, meets the requirements of this part.

2. Applicable to DHC-8 Models 101,102,103,106,201,202, 301, 311, 314 and 315 serial numbers 003 to 614.