Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, are a comprehensive set of rules governing the operation of aircraft within Australian airspace. Specifically, Part 39 - 106 pertains to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, which includes AD/AL 250/31 concerning the Allison Turbine Engines - 250 Series. This directive was introduced to address safety concerns associated with the installation of check valve assemblies in the fuel systems of specified engine assemblies. The aim of this legislation is to ensure the airworthiness and safety of these aircraft engines by mandating specific compliance actions for certain engine serial numbers prior to a specified date. CASA, as the enforcing body, sets these directives to maintain high safety standards in the aviation industry. This legislative instrument targets the 250-C20 and 250-B17 engine series, specifically those produced before certain serial numbers, to rectify potential safety issues related to the check valve assembly in the fuel system. The directive requires compliance before 30 November 1978, ensuring that all affected aircraft meet the specified airworthiness criteria. By enforcing these standards, the legislation seeks to mitigate risks associated with engine failures, thereby enhancing overall aviation safety and protecting both passengers and crew.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 106, encompasses a range of directives aimed at ensuring the safety and airworthiness of aircraft within Australian airspace. Specifically, the Allison Turbine Engines - 250 Series Airworthiness Directive, AD/AL 250/31, applies to certain engine assemblies to rectify issues related to the fuel system check valve assembly. This directive applies to 250-C20 engine assemblies with serial numbers prior to CAE 823424, 250-C20B assemblies prior to CAE 830490, 250-B17 assemblies prior to CAE 870060, and 250-B17B assemblies prior to CAE 880190. Compliance with this directive is mandatory for entities operating these specific engine models, ensuring that the installations adhere to the specified technical standards outlined in the Allison 250-C20B CEB 1101R1 or Allison 250-B17/B17B TP CEB 1078R1 documents, with the compliance deadline set before 30 November 1978. This regulatory framework is intended to maintain the highest safety standards for aviation operations within Australia and is enforced by the Civil Aviation Safety Authority (CASA).

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, Part 39 - 106, specifically focusing on the Airworthiness Directives for Allison Turbine Engines - 250 Series, require certain checks and installations related to the fuel system check valve assembly. According to AD/AL 250/31, this directive applies to specific engine assemblies: 250-C20 Engine Assemblies prior to serial number CAE 823424, 250-C20B Engine Assemblies prior to serial number CAE 830490, 250-B17 Engine Assemblies prior to serial number CAE 870060, and 250-B17B Engine Assemblies prior to serial number CAE 880190. Compliance with these directives must be achieved before 30 November 1978, as outlined in the Allison 250-C20B CEB 1101R1 or Allison 250-B17/B17B TP CEB 1078R1 documentation. The obligations imposed by these directives include ensuring that the specified Allison Turbine Engine assemblies are inspected and, if necessary, have the fuel system check valve assembly installed correctly. This is to maintain the airworthiness of the aircraft and ensure safety standards are met. Operators and owners of aircraft equipped with these engines are required to verify that the engines meet the criteria specified in the Airworthiness Directives and take corrective action if needed. They must also keep records of compliance and any actions taken to ensure the engines meet the required standards. Failure to comply with the provisions of these Airworthiness Directives can result in serious consequences. The Civil Aviation Safety Authority (CASA) may take enforcement action against non-compliant aircraft, which could include grounding the aircraft until compliance is achieved. Operators and owners may face financial penalties and legal action. Additionally, failure to adhere to these directives could lead to civil or criminal liability if non-compliance results in an aviation accident or incident, potentially leading to imprisonment or fines as stipulated under the Civil Aviation Act 1988. The exact penalties for non-compliance are not detailed in the provided text but are governed by the broader regulatory framework under which CASA operates.