AD/HU 369/57 Amdt 2 - Collective Stick Support Bracket Reinforcement Strap - Installation

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, were enacted to ensure the safety and maintenance of civil aviation in Australia. One such legislative instrument, F2006B10720, addresses the need for specific airworthiness directives, such as the reinforcement of the collective stick support bracket strap in certain McDonnell Douglas (Hughes) and Kawasaki 369 series helicopters. This legislative instrument was introduced to fill a gap in the regulatory framework by ensuring that all specified helicopter models adhere to specific maintenance and safety standards. The policy objective is to mitigate risks associated with the identified structural weaknesses, thereby enhancing the safety of air operations. The Australian Parliament enacted these regulations to provide a robust legal basis for the Civil Aviation Safety Authority to issue and enforce airworthiness directives. The directive applies to all 500 models 369D, 369H, 369HE, 369HM, 369HS Series, and 369E Series helicopters with specific serial numbers, mandating that the collective stick support bracket reinforcement strap be installed within 100 hours of time in service after 30 November 1983. Compliance with this directive is crucial for maintaining the airworthiness of these aircraft and ensuring the safety of all passengers and crew. The regulation is enforced through compliance documents such as Hughes SIN No. DN-119, Hughes SIN No. HN-187, and Hughes SIN No. EN-11, which provide detailed instructions and references to support the implementation of the directive.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, addresses the maintenance and safety of McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters. The scope of this legislation applies to all 500 models of 369D, 369H, 369HE, 369HM, 369HS Series and 369E Series with serial numbers ranging from 0001E to 0019E. The regulation mandates the installation of a Collective Stick Support Bracket Reinforcement Strap, as outlined in Amendment 2 of the AD/HU 369/57, effective from 2 August 1984. This directive requires compliance unless the installation has already been completed within 100 hours of time in service following 30 November 1983. The referenced Hughes Service Information Notices (SIN) are DN-119.1, HN-187.1, and EN-11. This directive is binding and extends its applicability across the Commonwealth of Australia, ensuring that all specified helicopter models meet the stipulated safety standards to maintain their airworthiness.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, detail the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, including AD/HU 369/57 Amendment 2. This amendment pertains to the installation of a Collective Stick Support Bracket Reinforcement Strap on certain McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters (sections 1 and 2). The directive applies to all models 369D, 369H, 369HE, 369HM, 369HS, and 369E, with serial numbers ranging from 0001E to 0019E. The compliance requirement mandates that the installation must be completed unless it has already been accomplished within 100 hours of time in service after 30 November 1983. The directive references Hughes Service Information Notices (SIN) DN-119.1, HN-187.1, and EN-11 for further detail. The obligations imposed by this directive include ensuring that the specified models of helicopters undergo the required installation of the Collective Stick Support Bracket Reinforcement Strap. Operators and owners of these helicopters must adhere to the stipulated timeframes and ensure compliance with the CASA regulations. They must verify that the installation has been completed within the specified period or before, depending on the service hours of the aircraft. Documentation from the referenced Hughes SINs must be followed to correctly implement the required changes. Failure to comply with the provisions of this Airworthiness Directive may result in serious safety implications, leading to potential civil and criminal consequences. While the specific penalties are not detailed in the provided text, non-compliance with CASA directives generally results in enforcement actions that can include fines, penalties, and potential grounding of the aircraft until compliance is achieved. The severity of the penalties can vary based on the extent of the non-compliance and the impact on aviation safety.