AD/T53/2 - First Stage Power Turbine Rotor Blade Retaining Pins Retirement Life

Overview

The Civil Aviation Regulations 1998, as amended by the legislative instrument F2006B07249, address the issue of ensuring the safety of turbine engines used in civil aviation, particularly focusing on the AlliedSignal (Lycoming) Turbine Engines - T53 Series. This legislation was introduced to fill the gap in safety standards for specific turbine engines, aiming to mitigate risks associated with the failure of retaining pins in the first stage power turbine rotor blades. The Civil Aviation Safety Authority (CASA) is the enacting body responsible for the implementation of these regulations. The policy objective is to maintain and enhance the safety of air travel by enforcing stringent airworthiness directives and ensuring compliance with safety standards set forth by the authority. The legislation mandates compliance with specific service bulletins and airworthiness directives, such as Lycoming Product Support Service Bulletin No. 0003, Rev. 5, or AD/LYC-T/5B, with a compliance deadline of 30 November 1973. The regulations apply to certain serial numbers of T5313A, T5313B, T53-L-13, and T53-L-13B engines, ensuring that any identified issues with the retaining pins are addressed to prevent potential hazards during flight operations.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 106, addresses the safety directives that must be adhered to by certain entities and individuals within the aviation industry. This legislation applies to aircraft operators, maintenance providers, and other relevant parties who are responsible for the operation and maintenance of AlliedSignal (Lycoming) Turbine Engines, particularly the T53 Series. The regulation is concerned with the mandatory retirement life of the First Stage Power Turbine Rotor Blade Retaining Pins, affecting specific engine models and serial numbers as outlined in the document. Geographically, this regulation holds jurisdiction across the Commonwealth of Australia, thereby ensuring a consistent approach to safety standards throughout the country. The scope of this regulation includes the specified models and serial numbers of the T53 Series engines, such as the T5313A, T5313A S/N Suffix "A", T5313B S/N LEO7500 to LEO7513 and LEO7528 to LEO7532, as well as the T53-L-13, T53-L-13 S/N Suffix "A", T53-L-13A, and T53-L-13B S/N prior to LE22568. Compliance with the directive must be evidenced by adherence to the guidelines set out in either Lycoming Product Support Service Bulletin No. 0003, Rev. 5, or AD/LYC-T/5B, with the compliance deadline being 30 November 1973. This regulation underscores the importance of maintaining stringent safety standards in the aviation industry to protect both the public and aviation personnel.

Key Provisions

The key provisions of the Civil Aviation Regulations 1998, as outlined in Part 39 - 106, pertain to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for the AlliedSignal (Lycoming) Turbine Engines - T53 Series, specifically AD/T53/2, which concerns the retirement life of the first stage power turbine rotor blade retaining pins. This directive applies to engines of the T5313A, T5313A S/N Suffix "A", T5313B S/N LEO7500 to LEO7513 and LEO7528 to LEO7532 series, as well as the T53-L-13, T53-L-13 S/N Suffix "A" T53-L-13A and T53-L-13B S/N prior to LE22568. Compliance with this directive requires adherence to either Lycoming Product Support Service Bulletin No. 0003, Rev. 5, or AD/LYC-T/5B, with the compliance deadline set for 30 November 1973. This Act imposes specific obligations on the entities governed by it, primarily focusing on maintaining the airworthiness of the specified engine models. Operators and owners of the affected engines must ensure that the first stage power turbine rotor blade retaining pins are retired as per the stipulated directives. This involves following the guidelines laid out in the Lycoming Product Support Service Bulletin No. 0003, Rev. 5, or AD/LYC-T/5B, and ensuring compliance by the specified deadline. Failure to comply with these directives may result in the engine being deemed unairworthy, which could lead to severe operational and safety implications. For breach of these regulations, the Act stipulates potential offences and penalties. While the exact penalties are not detailed in the excerpt, it is common for breaches of airworthiness directives to result in significant civil and potentially criminal consequences. This may include substantial fines, operational restrictions, and in severe cases, criminal charges against individuals or entities responsible for non-compliance. The specific penalties would be determined based on the severity and impact of the non-compliance, with potential maximum penalties aligning with those prescribed under the Civil Aviation Act 1988 and related regulations.