AD/AC/11 - Flap Pulley Assembly Right Inboard Station 13.625 - Modification

Overview

The Civil Aviation Regulations 1998, specifically Part 39, was enacted by the Commonwealth of Australia to ensure the safety of civil aviation. This particular legislative instrument, F2006B02070, was introduced to address a safety concern regarding the flap pulley assembly on the right inboard side of the Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600, and 700) series aeroplanes. The objective of this regulation is to mandate modifications to the flap pulley assembly to ensure continued airworthiness and compliance with safety standards, as stipulated in Aero Commander Service Bulletin No. 55. The Civil Aviation Safety Authority is responsible for enforcing these directives, which require immediate compliance from all affected aircraft serial numbers within the specified range.

Scope and Application

The Civil Aviation Safety Authority's Airworthiness Directives outlined in the Civil Aviation Regulations 1998 specifically target the Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600, and 700) series aeroplanes. This particular directive, AD/AC/11, focuses on the flap pulley assembly on the right inboard side at station 13.625, requiring immediate modification as detailed in Aero Commander Service Bulletin No. 55. The directive applies to all models with serial numbers ranging from 231 to 710, mandating compliance without delay. The directive is part of a broader regulatory framework under the Commonwealth of Australia, ensuring that these specific aircraft meet necessary safety standards. While the scope is narrow, focusing on these particular models and components, its implications are significant for the aviation industry and relevant operators within the Australian jurisdiction.

Key Provisions

The key provisions of this particular Civil Aviation Regulation revolve around the maintenance and safety requirements for the Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600, and 700) series aeroplanes, specifically targeting the flap pulley assembly on the right inboard side at station 13.625. According to section (1) of this legislative instrument, all models with serial numbers ranging from 231 to 710 must comply with the specified modifications to ensure airworthiness. Compliance with this directive is mandatory and must be achieved forthwith, as outlined in section (2). These regulations impose specific obligations on the aircraft owners, operators, and maintenance personnel. They must ensure that the flap pulley assembly modifications are performed as detailed in Aero Commander Service Bulletin No. 55, which is referenced in section (3). This entails a thorough inspection and, if necessary, the replacement or repair of the flap pulley assembly to meet the safety standards prescribed by the Civil Aviation Safety Authority (CASA). The compliance must be carried out without undue delay, reflecting the critical nature of the modifications for the safe operation of the aircraft. Failure to adhere to these provisions can result in serious consequences. Section (4) of the regulation stipulates that non-compliance with the airworthiness directives can lead to enforcement actions. This may include fines, penalties, or even the grounding of the aircraft until the required modifications are completed. The specific penalties are not detailed in the legislative instrument but can be severe, considering the importance of ensuring the structural integrity and safety of the aircraft in question.