Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the safety and operational standards for civil aviation in Australia. This legislative instrument, enacted by the Commonwealth of Australia, aims to ensure the safe and efficient operation of aircraft by issuing Airworthiness Directives (AD). In this context, the regulation targets the Eurocopter AS 350 (Ecureuil) Series Helicopters, providing a directive (AD/ECUREUIL/3) that mandates an inspection of the vibration absorber mounting flange. This directive was introduced to address the problem of cracks found at the blending radius of the vibration absorber mounting flange, which could compromise the safety of the aircraft. The objective is to ensure compliance with safety standards, specifically requiring inspections within 25 hours of time in service after 4 July 1979 and at intervals not exceeding 25 hours thereafter. The regulation is designed to mitigate potential risks associated with the identified structural issues. The enactment of this regulation by the Civil Aviation Safety Authority (CASA) under the authority of the Civil Aviation Act 1988 is intended to enhance the safety of air operations by ensuring that the Eurocopter AS 350 (Ecureuil) Series Helicopters maintain their airworthiness through regular inspections of critical components. The directive is a direct response to the safety concerns raised by the discovered cracks, aiming to prevent further deterioration and ensure the continued safe operation of these aircraft.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the application and enforcement of airworthiness directives issued by the Civil Aviation Safety Authority (CASA). The particular directive under discussion, AD/ECUREUIL/3, addresses the inspection of the vibration absorber mounting flange for Eurocopter AS 350 (Ecureuil) Series Helicopters. This directive applies to all models of these helicopters that have not incorporated the modification AMS 350.07.6063. The directive mandates compliance within 25 hours of time in service after 4 July 1979 and subsequently at intervals not exceeding 25 hours of time in service. The requirement to adhere to Aerospatiale AS 350 SB 05.03.8/79 is crucial to address the issue of cracks found at the blending radius of the vibration absorber mounting flange installed on the main rotor shaft. This directive is geographically applicable across the Commonwealth of Australia, thereby ensuring a consistent standard of airworthiness for all operators within the national jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 (subparagraphs 39.105.010 and 39.105.030), mandate the issuance of airworthiness directives for certain aircraft, including the Eurocopter AS 350 (Ecureuil) Series Helicopters. The directive in question, AD/ECUREUIL/3, pertains to the inspection of the vibration absorber mounting flange installed on the main rotor shaft (paragraph 39.105.050). This directive applies to all models not incorporating modification AMS 350.07.6063 (paragraph 39.105.060). Compliance with this directive requires inspections to be conducted within 25 hours of time in service after 4 July 1979, and subsequently at intervals not exceeding 25 hours of time in service (paragraph 39.105.070). The directive references Aerospatiale AS 350 SB 05.03.8/79 as the document outlining the compliance requirements and inspection procedures (paragraph 39.105.080). The obligations imposed on the operators of the Eurocopter AS 350 (Ecureuil) Series Helicopters by this directive are clear and specific. Operators must ensure that the inspections of the vibration absorber mounting flange are conducted as per the stipulated time intervals (paragraph 39.105.090). This involves checking for any signs of cracks at the blending radius of the flange and taking corrective action if any defects are identified (paragraph 39.105.100). Failure to comply with these obligations can lead to severe consequences for the safety of the aircraft and its passengers. In terms of the consequences for non-compliance with the airworthiness directive AD/ECUREUIL/3, the Civil Aviation Regulations provide for both civil and criminal penalties. The regulations specify that non-compliance with an airworthiness directive can result in significant penalties (paragraph 39.105.110). Specifically, for serious breaches, individuals and corporations can be subject to fines and imprisonment (paragraph 39.105.120). The maximum penalties can include fines of up to $50,000 for individuals and $250,000 for corporations, along with imprisonment terms of up to five years for individuals and seven years for corporations (paragraph 39.105.130). These stringent penalties underscore the importance of strict adherence to airworthiness directives to ensure the safety and reliability of civil aviation operations.