COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Allison Turbine Engines - 250 Series
AD/AL 250/25
Amdt 1
Power Turbine Outer Coupling Nut - Inspection 10/77
Applicability: All model 250-C18, -C20, -C20B, B15G, B17 and B17B series engines fitted with power turbine outer coupling Nut P/N 6846278.
Document: Allison 250-C18, CSL-88, Rev. 3; OR 250-C20/C20B CSL-1060, Rev. 3; or 250- B15G TP CSL-25, Rev. 3; OR 250-B17/B17B TP CSL-1030, Rev. 3; OR FAA AD
77-15-12, Amendment No. 39-2977.
Compliance: As detailed in the requirement documents.
Overview
The Civil Aviation Regulations 1998, as amended, form part of Australia's legislative framework to ensure the safety and efficiency of civil aviation. Specifically, Part 39 - 106 of these regulations pertains to the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives. This includes directives such as AD/AL 250/25 Amendment 1, which addresses the inspection of the power turbine outer coupling nut for certain Allison Turbine Engines 250 Series. This directive was introduced to ensure that specific engine models maintain their airworthiness and safety standards. The objective is to comply with the relevant technical standards and requirements as detailed in the referenced documents, such as Allison 250-C18, CSL-88, Rev. 3, and FAA AD77-15-12, Amendment No. 39-2977. The enactment and continuous updating of such regulations are vital to maintaining the high safety standards expected in Australia's civil aviation sector.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 106, applies to all persons, entities, and entities involved in the aviation industry, with a particular focus on the maintenance and operation of Allison Turbine Engines 250 Series, which includes model numbers 250-C18, -C20, -C20B, B15G, B17, and B17B series engines fitted with a power turbine outer coupling Nut P/N 6846278. The scope of this regulation is comprehensive, encompassing any aircraft, engines, or components subject to the directives outlined in the referenced Allison engine manuals and FAA AD77-15-12, Amendment No. 39-2977. The application is national, extending across all jurisdictions within Australia, ensuring uniformity in compliance and safety standards. The regulation mandates specific compliance measures, including the inspection of the power turbine outer coupling nut as per the detailed requirements in the referenced documents. There are no stated exclusions or exemptions within the scope of this directive; however, the detailed requirements may be extended or clarified through subordinate instruments issued by the Civil Aviation Safety Authority.
Key Provisions
The Civil Aviation Regulations 1998, under PART 39 - 106, include specific directives concerning the airworthiness of various aircraft components. One such directive, AD/AL 250/25 Amendment 1, pertains to the inspection of the Power Turbine Outer Coupling Nut for Allison Turbine Engines - 250 Series (section 10/77). This directive applies to model 250-C18, -C20, -C20B, B15G, B17, and B17B series engines that are fitted with a power turbine outer coupling Nut P/N 6846278. The applicability of this directive is clearly outlined in various Allison documentation, including Allison 250-C18, CSL-88, Rev. 3; 250-C20/C20B CSL-1060, Rev. 3; 250-B15G TP CSL-25, Rev. 3; and 250-B17/B17B TP CSL-1030, Rev. 3, as well as FAA AD77-15-12, Amendment No. 39-2977. Compliance with these requirements is to be achieved as detailed in the referenced documents.
Operators and owners of the specified Allison Turbine Engines must ensure that the Power Turbine Outer Coupling Nut is inspected according to the directives outlined in the relevant documents. These inspections are crucial for maintaining the airworthiness of the engines, ensuring safety and compliance with aviation standards. The directive emphasises the importance of adhering to the specific guidance provided in the Allison and FAA documentation to carry out these inspections effectively.
Failure to comply with the requirements of AD/AL 250/25 Amendment 1 could result in serious consequences. The Civil Aviation Regulations 1998 mandate that any non-compliance with airworthiness directives is a breach of the regulations. Such breaches can lead to enforcement actions, which may include fines, suspension or revocation of aircraft certificates, or other regulatory penalties. The exact penalties for non-compliance are not detailed in the directive itself but can be substantial under broader aviation regulations. It is essential for operators to take these directives seriously to avoid any potential legal or safety repercussions.