AD/CJ610/5 - Compressor Discs

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, represent a critical framework aimed at ensuring the safety and efficiency of civil aviation operations within Australia. Specifically, Part 39 addresses airworthiness directives, with Schedule AD/CJ610/5 focusing on General Electric Turbine Engines - CJ610 Series. This legislative instrument was introduced to address safety concerns associated with specific components of the CJ610 turbine engines, such as the compressor discs, which were identified as having potential material defects that could compromise the integrity and safety of the aircraft during operation. The policy objective underlying this directive is to mandate the removal and replacement of affected components to mitigate any potential safety risks, thereby ensuring the continued airworthiness of affected aircraft. Compliance with these directives is mandatory, requiring operators to act within a specified timeframe to address the issues identified.

Scope and Application

This legislative instrument applies specifically to certain General Electric CJ610 Series turbine engines identified by their serial numbers, namely those with compressor discs that fall within the specified serial number range. The directive mandates actions for sixth stage and seventh stage compressor discs, requiring their removal from service and replacement with serviceable discs if they match the listed serial numbers. Additionally, the Act requires inspections of first stage compressor discs, again based on serial numbers, for compliance with specific material property standards. These measures are intended to ensure the airworthiness of the engines and are applicable to any entity operating aircraft equipped with the affected engines. The legislation is enforced under the Civil Aviation Regulations 1998, thus applying nationally across Australia. The Act does not explicitly state any exclusions or exemptions, implying that all specified engines must comply unless otherwise noted in subordinate instruments. The Civil Aviation Safety Authority has the authority to extend or restrict the application through additional regulations or amendments.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39, specifically section 39-106, address the airworthiness directives for General Electric Turbine Engines of the CJ610 series, focusing on the compressor discs (AD/CJ610/5). The directive mandates the removal from service of specific sixth and seventh stage compressor discs that have been identified by their serial numbers (section 1). Operators must remove and replace the affected discs with serviceable ones to ensure compliance with safety standards. Additionally, the directive requires the inspection of first stage compressor discs according to specific inspection procedures outlined in General Electric Company Service Bulletins (section 2). Discs that meet the necessary material property requirements can be returned to service, while those that do not must be replaced. Removed discs are to be sent to General Electric for evaluation (section 4). Operators and owners of aircraft equipped with CJ610 series engines must adhere to these requirements to maintain the airworthiness of their aircraft. Compliance with the directive is mandatory and must be achieved within ten flights after the directive's issuance date, which was 17 March 1978 (Compliance section). Failure to comply with these airworthiness directives can result in significant legal and safety repercussions. Non-compliance could lead to the grounding of the aircraft until the required inspections and repairs are completed, potentially disrupting scheduled flights and incurring additional costs for operators. Under the Civil Aviation Act 1988, non-compliance with airworthiness directives can result in substantial penalties. Operators who fail to adhere to the directives may face fines up to $275,000 for individuals and $1.375 million for corporations, as well as potential imprisonment. Furthermore, the Civil Aviation Safety Authority has the authority to issue directions to rectify non-compliance, suspend or cancel air operator certificates, and take other enforcement actions deemed necessary to ensure aviation safety standards are met. Such actions underscore the seriousness of adhering to airworthiness directives and the importance of maintaining the highest safety standards in civil aviation.