AD/CF6/25 - Fan Disks - Removal From Service

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, serve as a comprehensive legal framework governing all aspects of civil aviation within the country. The regulations were introduced to ensure safety and compliance with international standards in the aviation industry. One specific legislative instrument, F2006B08468, pertains to the scheduling of airworthiness directives for General Electric Turbine Engines, specifically the CF6 series. This directive was introduced to address the potential safety risk posed by a metallurgical defect in certain Stage 1 Fan Disks, which could adversely affect their service life. The directive mandates the removal of these disks from service in accordance with the technical requirements set out by the Federal Aviation Administration (FAA) in AD 91-23-13, effective from 17 September 1992. The policy objective is to maintain the highest standards of safety and reliability in civil aviation operations.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 106, applies to the aircraft industry and those entities involved in the maintenance and operation of General Electric Turbine Engines, particularly the CF6 series. This legislation mandates that the technical requirements outlined in FAA AD 91-23-13 be adhered to, with a focus on the removal of certain Stage 1 Fan Disks from service due to the potential for metallurgical defects that could compromise the safety of these components. The scope of the regulation includes both the CF6-50 and 80A series engines, ensuring that all relevant stakeholders are required to comply with the specified requirements to maintain airworthiness standards. The geographic reach of these regulations is national, as they are enforced under the Commonwealth of Australia, impacting all aviation activities within its jurisdiction. The regulations provide a compliance deadline of 17 September 1992, mandating that actions be taken in accordance with the detailed requirements outlined in the accompanying Requirement Document. The regulation does not explicitly mention any exclusions, exemptions, or thresholds, suggesting that the directive applies universally to the specified engines. Additionally, while the primary legislation specifies the requirements, it is likely that further guidance and operational details may be provided through subordinate instruments or additional documentation from the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39 - 106 under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, includes specific provisions for the General Electric Turbine Engines - CF6 Series, notably AD/CF6/25 which addresses the removal from service of fan disks (section 10/92). This regulation applies to CF6-50 and 80A series engines (section 10/92). The directive mandates that actions must comply with the technical requirements set out in FAA AD 91-23-13, ensuring that these engines are managed in a manner consistent with international safety standards (section 10/92). Compliance must be achieved according to the Requirement Document, with an effective date of 17 September 1992 (section 10/92). The directive arises from concerns about potential metallurgical defects in certain Stage 1 fan disks, which could adversely affect the service life of the disks and thus pose safety risks (section 10/92). The obligations imposed by this directive are significant, as they require operators of the affected engines to ensure that the specified fan disks are removed from service. This involves a thorough inspection and adherence to the prescribed technical requirements (section 10/92). Operators must ensure that all actions taken to comply with the directive are documented and that records are maintained to demonstrate compliance. This includes adhering to the specific guidance and timeframes outlined in the Requirement Document, which is a critical component of the directive (section 10/92). Failure to comply with these obligations could result in non-compliance with international civil aviation safety standards, potentially leading to operational disruptions or safety hazards. Failure to comply with the provisions of this directive can result in serious consequences. Non-compliance with the AD/CF6/25 directive could lead to enforcement actions by the Civil Aviation Safety Authority (CASA). This may include fines, penalties, and other sanctions imposed by CASA (section 10/92). Additionally, operators may face legal actions, including civil litigation for any damages resulting from non-compliance. In extreme cases, persistent non-compliance could lead to suspension or revocation of the operator’s licence, severely impacting their ability to conduct operations (section 10/92). The maximum penalties for breaches of the Civil Aviation Regulations 1998 can be substantial, reflecting the critical nature of ensuring compliance with aviation safety directives (section 10/92).