AD/DHC-8/80 - Observer Seat Latch (Cth)

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

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.

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

AD/DHC-8/80 Observer Seat Latch 8/2001

Applicability: DHC-8 aircraft, Models 102, 103, 106, 201, 202, 301, 311, 314, and 315, with serial numbers 408, 413, and 434 through 507; excluding serial numbers 452, 464, 490, and 506.

Requirement: Replace the observer's seat latch assembly by incorporating ModSum 8Q100890 in accordance with the instructions contained in Bombardier Service Bulletin 8-25-307, dated 13 November 2000.

Note: Transport Canada AD CF-2001-18 refers.

Compliance: Before 15 June 2002, unless already accomplished.

This Airworthiness Directive becomes effective on 9 August 2001.

Background: The observer's seat latch assembly and its attachment to the cockpit door frame have been found to be under strength on aircraft equipped with Hunting interiors. This could result in the seat separating from its attachment in the event of an accident or emergency landing.