AD/DHA-3/25 Amdt 2 - Centre Section and Wing Spar - Life Limitations

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, establishes the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, which includes AD/DHA-3/25 Amendment 2. This amendment concerns the centre section and wing spar life limitations for the DHA-3 (Drover) Series Aeroplanes. The Act was enacted to ensure the safe operation of civil aircraft by imposing strict airworthiness standards and compliance requirements. It was introduced to address the problem of ensuring aircraft structural integrity and preventing in-flight failures due to material fatigue and degradation over time. The policy objective outlined in the regulations is to enhance the safety of civil aviation by mandating specific maintenance and inspection protocols. The Civil Aviation Regulations 1998 were enacted by the Parliament of the Commonwealth of Australia to provide comprehensive regulations governing the safety of civil aviation. This legislative instrument aims to maintain and enhance airworthiness standards, ensuring that aircraft meet stringent safety requirements throughout their operational life. By implementing specific life limitations and compliance measures for critical components such as the centre section and wing spar, the regulations seek to mitigate risks associated with structural failures, thereby protecting passengers, crew, and the public.

Scope and Application

The Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the airworthiness directives for DHA-3 (Drover) series aeroplanes, applying to all models of these aircraft. These regulations mandate life limitations for the centre section and wing spar, as outlined in AD/DHA-3/25 Amendment 2, with detailed compliance instructions provided in Hawker de Havilland Australia Technical Notice No. 129, Issue 4. The scope of this legislation is explicitly directed towards ensuring that the specified components of DHA-3 series aeroplanes maintain their structural integrity and operational safety throughout their service life, with adherence to the outlined requirements being critical for continued airworthiness. This legislation, issued under the Commonwealth of Australia, applies to all entities and individuals involved in the operation, maintenance, and certification of these aircraft within the Australian jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, mandate the Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA) for the DHA-3 (Drover) series aeroplanes. The directive AD/DHA-3/25 Amendment 2, which focuses on the centre section and wing spar life limitations, is applicable to all models of the DHA-3 series. Compliance with this directive is governed by Hawker de Havilland Australia Technical Notice Series CT (A3) No. 129 Issue 4, which details the requirements that must be met. The obligations imposed by this directive are clear and stringent. Operators of DHA-3 series aeroplanes must ensure that the centre section and wing spar of their aircraft meet the specified life limitations as outlined in the directive. This involves regular inspections and maintenance to verify the integrity of these critical components. The directive requires that these inspections be carried out in accordance with the requirements document provided by Hawker de Havilland Australia, ensuring that all maintenance and inspection activities are performed to a high standard. Failure to comply with the provisions of AD/DHA-3/25 Amendment 2 can result in serious consequences. The Civil Aviation Act 1988 imposes penalties for non-compliance with airworthiness directives. Specifically, if an operator fails to adhere to the life limitations set out for the centre section and wing spar, they may face legal action. The penalties can include fines and, in severe cases, criminal charges against the operator or responsible individuals. The exact penalties depend on the nature and extent of the breach, but they are designed to enforce strict adherence to safety regulations and ensure the continued airworthiness of DHA-3 series aeroplanes.