AD/TPE 331/28 Amdt 4 - Repl. and/or Life Limitation of P/N 868630-1/-2/-3/-4/-7/-8, P/N 895539-1/-2/-3/-4 3rd Stage Turbine Wheels, P/N 867569-1/-7 1st Stage Turbine Wheels,

Overview

The Civil Aviation Regulations 1998, specifically PART 39 - 106, under the authority of the Civil Aviation Safety Authority (CASA), addresses the regulation of airworthiness directives for various aircraft components, including the AlliedSignal (Garrett/AiResearch) Turbine Engines of the TPE 331 series. The aim of this legislation is to ensure the safety and reliability of these engines through the enforcement of specific inspection and maintenance requirements. This legislative instrument was enacted to fill a critical gap in ensuring that particular components within the TPE 331 series engines meet stringent safety standards, thereby protecting the aviation industry and the public from potential hazards associated with engine failure. The policy objective is to maintain the highest standards of airworthiness by aligning with international directives, such as those issued by the Federal Aviation Administration (FAA), and ensuring compliance through detailed and specific inspection and action protocols.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 106 under the Civil Aviation Safety Authority, governs the airworthiness directives concerning the AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series. This legislation applies to all engines within the TPE 331 series, including the TPE 331-3, TPE 331-1, TPE 331-2, TPE 331-3, TPE 331-5, and TPE 331-6 series, mandating inspections and actions for the first, second, and third-stage turbine wheels and the third-stage turbine seal. Compliance with the Federal Aviation Administration's AD 84-01-04 Amendment 39-4792 is required, as specified in the relevant paragraphs. Although several Garrett Service Bulletins are referenced, they may not fully align with the FAA AD requirements. This legislation is applicable across the Commonwealth of Australia, extending to all entities and industries involved with the specified engines, ensuring adherence to safety standards and operational efficiency.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 106, establish a schedule of airworthiness directives that govern various aspects of aviation safety, including the maintenance and inspection of aircraft engines. Under this section, AD/TPE 331/28 Amendment 4 pertains to the AlliedSignal (Garrett/AiResearch) Turbine Engines of the TPE 331 Series. This directive focuses on the replacement and/or life limitations of certain turbine wheels and seals in these engines, particularly those identified by specific part numbers such as P/N 868630, P/N 895539, P/N 867569, P/N 868272, P/N 868379, and P/N 868259. The requirement set forth in this directive mandates that inspections and actions be taken in accordance with the Federal Aviation Administration (FAA) AD 84-01-04 Amendment 39-4792, paragraphs (a) through (f). It is crucial that these inspections and any subsequent actions are performed meticulously to ensure the continued airworthiness of the affected turbine engines. Entities governed by this directive, including aircraft owners, operators, and maintenance organisations, must adhere to the detailed requirements outlined in the FAA AD 84-01-04. This involves conducting thorough inspections of the specified turbine wheels and seals, ensuring they meet the necessary safety standards. The directive also references Garrett Turbine Engine Company Service Bulletins, which provide supplementary guidance but do not replace the FAA AD requirements. Compliance with this directive is not optional; it is mandatory for the continued safe operation of the affected turbine engines. Failure to comply could result in the grounding of the aircraft until the required inspections and actions are completed. Non-compliance with the provisions of AD/TPE 331/28 Amendment 4 can lead to significant legal and operational consequences. The Civil Aviation Safety Authority (CASA) enforces these regulations rigorously, and any breaches may result in the imposition of penalties. The exact penalties can vary depending on the severity and circumstances of the breach but may include fines, suspension or revocation of airworthiness certificates, and other administrative actions. In cases of serious non-compliance, there may also be potential criminal liabilities, which could lead to substantial financial penalties and even imprisonment. Therefore, it is imperative that all parties involved in the maintenance and operation of these engines strictly adhere to the directive to avoid these serious repercussions.