AD/DHC-8/21 Amdt 1 - Engine Rear Mount Strut (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes

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 39.1 (1) of CAR 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.

AD/DHC-8/21 Amdt 1

Engine Rear Mount Strut 10/2001

Applicability: DHC-8 aircraft, Models 102, 103, 106, 201, 202, 301, 311, 314, and 315, with serial numbers 003 through 517; equipped with engine rear mount struts, part numbers 87110016-003, -005, -007, -009, -011, or 8DK1763-001.

Requirement: Perform a detailed visual inspection for cracks in the affected engine rear mount strut assemblies listed in the Applicability part of this Directive, on both the left and right engine nacelles.

Replace cracked struts before further flight.

Replacement of both engine rear mount struts in a nacelle with the new machined struts, part number 87110047-001, terminates the repetitive inspection requirements of this Directive for that nacelle only.

Note 1: Termination of the repetitive inspections as specified in this Directive does not alter the operator's approved maintenance program for these rear mount struts.