AD/DHE/4 - Supercharger Drive System - Modification

Overview

The Civil Aviation Regulations 1998, which include the legislative instrument F2006B09279, were enacted to address the need for stringent and consistent regulations governing civil aviation safety in Australia. This legislation was introduced to ensure the safety and efficiency of civil aviation operations within the country, by providing a comprehensive legal framework that governs various aspects of aviation activities. The Civil Aviation Regulations 1998 were enacted by the Parliament of the Commonwealth of Australia and aim to achieve a high level of safety in civil aviation operations by setting out the regulatory requirements for airworthiness, licensing, and operational standards. The policy objective of this legislation is to ensure that civil aviation activities in Australia meet the international standards set by the International Civil Aviation Organization, while also addressing the specific safety concerns relevant to the Australian context. The legislative instrument F2006B09279, specifically pertaining to Part 39 - 106 Civil Aviation Safety Authority Schedule of Airworthiness Directives, focuses on addressing safety issues related to De Havilland piston engines. This particular directive, AD/DHE/4, mandates modifications to the supercharger drive system for Gipsy Queen 70 Series engines to ensure compliance with safety standards before installation in an aircraft. This instrument was introduced to address potential safety risks associated with the supercharger drive system in these engines, thereby contributing to the overarching policy objective of maintaining a high level of safety in civil aviation operations.

Scope and Application

The Civil Aviation Regulations 1998, as amended, under the jurisdiction of the Civil Aviation Safety Authority (CASA), includes specific directives aimed at ensuring the safety and airworthiness of aircraft components. The scope of AD/DHE/4 pertains specifically to De Havilland Piston Engines, more precisely to Gipsy Queen 70 Series engines, and mandates modifications to the supercharger drive system to comply with the specified directives. This regulation applies to all Gipsy Queen 70 Series engines and requires compliance before any installation in an aircraft. The modifications must adhere to either the De Havilland modifications G1303, G1448, G1583, G1586, or G1706, or the Airworthiness Notice (ANO) 106.1.7.6.5.5. This regulation applies nationally across the Commonwealth of Australia, thereby encompassing all aviation activities within its jurisdiction. The Act does not explicitly state any exclusions or exemptions but relies on the overarching regulatory framework of the Civil Aviation Regulations to interpret such provisions where necessary. The application of this directive can be further extended or clarified through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 - 106, and the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, contain provisions that mandate certain modifications to the supercharger drive system of Gipsy Queen 70 Series engines. This is detailed in AD/DHE/4. This directive applies to piston engines manufactured by De Havilland and requires specific modifications to ensure compliance with safety standards (section 106.1). The modifications outlined in the directive include those documented in DH Mods. G1303, G1448, G1583, G1586, and G1706, or as stipulated in the Airworthiness Notice (ANO) 106.1.7.6.5.5. The modifications must be completed before the engine is installed in an aircraft (section 106.2). These regulations impose several obligations on parties involved in the manufacture, maintenance, and installation of Gipsy Queen 70 Series engines. Manufacturers must ensure that all engines meet the specified modifications as per the directive. Maintenance organisations and individuals responsible for the installation of these engines in aircraft are required to verify that the modifications have been carried out in accordance with the directive. Additionally, operators of aircraft equipped with these engines must ensure that the modifications have been completed before the aircraft is flown (section 106.3). These requirements are essential to maintain the airworthiness of the aircraft and to ensure the safety of all passengers and crew. Failure to comply with the provisions of AD/DHE/4 can result in significant consequences. The Act allows for enforcement actions to be taken against entities that fail to adhere to the required modifications. In cases of non-compliance, CASA has the authority to issue notices, direct corrective actions, or impose fines. The severity of the penalties depends on the nature and extent of the non-compliance. For instance, knowingly installing an engine that does not comply with the directive could result in a substantial fine, potentially up to the maximum penalties prescribed by the Civil Aviation Act 1988. Additionally, repeated or severe non-compliance could lead to more severe penalties, including potential prosecution under criminal law, leading to imprisonment for individuals found guilty of such offences (section 106.4).