Overview

The Civil Aviation Regulations 1998, specifically Part 39, provides for the regulation of civil aviation safety in Australia, with the Civil Aviation Safety Authority (CASA) being the relevant enforcing body. The legislation aims to ensure that civil aviation operations in Australia are conducted with the highest safety standards. One specific legislative instrument under this Act is F2006B08462, which pertains to Airworthiness Directives for General Electric Turbine Engines of the CF6 series. Enacted to address the problem of high-pressure turbine failures in certain CF6 engine models, this directive was introduced in response to an incident where such a failure caused significant aircraft damage. The policy objective of this instrument is to enhance the safety of air travel by mandating specific inspection and maintenance procedures for affected engine models, as detailed in FAA AD 91-05-21 Amdt 39-6900.6/91. This directive requires operators to implement a borescope inspection program and install improved hardware to increase cooling for the high-pressure turbine stage 1 shroud, with compliance to be achieved by adhering to the specified requirement documents.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 106, pertains to the Civil Aviation Safety Authority's schedule of airworthiness directives and applies to the General Electric Turbine Engines of the CF6 series. The focus of AD/CF6/18 is on all model CF6-80C2, A5, B6, B6 F, and DIF engines, demanding compliance with FAA AD 91-05-21 Amdt 39-6900.6/91. This regulation mandates that these engines undergo a borescope inspection program to identify any distress in the high-pressure turbine (HPT) stage 1 shroud and blade, as well as the installation of improved HPT hardware that enhances the cooling to the HPT stage 1 shroud. This directive is a response to a previous HPT failure that caused aircraft damage, underscoring the importance of ensuring the airworthiness and safety of these engine models. The regulations apply nationally, impacting all entities and industries involved in the operation of the specified engines within Australia, ensuring a uniform approach to aviation safety across the country.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, section 106, mandates that operators of certain General Electric Turbine Engines, namely the CF6 Series, must adhere to the Airworthiness Directives (AD) concerning high pressure turbine (HPT) inspections and improved shroud cooling (AD/CF6/18). This applies to all model variants of the CF6-80C2, A5, B6, B6 F, and DIF. The primary requirement is to implement the technical specifications outlined in FAA AD 91-05-21 Amendment 39-6900.6/91, with a compliance date set as of 13 June 1991 as detailed in the Requirement Document. These regulations impose several obligations on aircraft operators. Firstly, they must conduct borescope inspections of the HPT stage 1 shroud and blades to detect any distress. Secondly, operators are required to install improved HPT hardware that enhances the cooling of the HPT stage 1 shroud. These measures are critical to ensuring the continued airworthiness of the aircraft and preventing potential HPT failures which could lead to significant damage. Failure to comply with these directives can result in serious consequences. Civil Aviation Safety Authority (CASA) may take enforcement actions against operators who do not adhere to the stipulated requirements. While the specific penalties are not detailed in the legislative instrument, non-compliance with Civil Aviation Regulations can typically lead to enforcement actions that may include fines, grounding of aircraft, and other corrective measures. Additionally, in severe cases of non-compliance, there could be criminal charges brought against individuals responsible for the oversight of the aircraft, potentially resulting in substantial fines or imprisonment.