AD/PW100/2 Amdt 1 - High Pressure Rotor

Overview

The Civil Aviation Regulations 1998, as amended, provide comprehensive rules and standards for maintaining the airworthiness of aircraft operating in Australia. Specifically, Part 39 includes a schedule of Airworthiness Directives (ADs) designed to ensure the safety and reliability of aircraft components and systems. One such directive, AD/PW100/2 Amendment 1, pertains to the Pratt and Whitney Canada PW100 Series turbine engines. Enacted by the Civil Aviation Safety Authority (CASA), this legislation was introduced to address specific safety concerns related to the high-pressure rotor of these engines. The policy objective is to ensure that all PW100 series engines comply with the technical requirements established by Transport Canada to mitigate potential risks and maintain operational safety. The directive outlines specific compliance timelines for various engine models, mandating actions to be taken either at the next access to affected parts or during the next scheduled engine shop visit, ensuring that the necessary safety measures are implemented in a timely manner.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 106, mandates the application of airworthiness directives issued by the Civil Aviation Safety Authority (CASA) for Pratt and Whitney Canada Turbine Engines of the PW100 series. This legislative instrument applies to all PW100 series engines, encompassing PW115, PW118, PW118A, PW120, PW120A, PW121, PW123, PW124B, PW125B, and PW126 engines. The requirement is to adhere to the technical specifications outlined in Transport Canada Airworthiness Directive CF-89-14 Rev 1, which has been incorporated into the Australian regulations to ensure consistent safety standards. Compliance with these directives involves specific actions, with PW115, PW118, PW120, PW120A, and PW121 engines needing attention at the next access to affected parts, while PW118A, PW123, PW124B, PW125B, and PW126 engines must comply at the next scheduled engine shop visit, but no later than 31 December 1991. The directive has been amended to reflect revisions that alleviate compliance requirements for engines with certain PW115/PW120 series turbine components and acknowledges alternative service bulletins that meet Transport Canada’s intent. This legislative framework ensures that all relevant entities, including operators and maintenance providers, must comply with the specified directives to maintain the airworthiness of the affected engines.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically within Part 39 and the Schedule of Airworthiness Directives, pertain to the Pratt and Whitney Canada Turbine Engines - PW100 Series. Section 106 of the regulations mandates adherence to the technical requirements outlined in Transport Canada's Airworthiness Directive CF-89-14 Rev 1, as referenced in AD/PW100/2 Amendment 1. This requirement applies to all PW100 series engines, including models PW115, PW118, PW120, PW120A, PW121, PW118A, PW123, PW124B, PW125B, and PW126. The directive specifies two compliance timelines: for certain engines, compliance must be achieved at the next access to affected parts, while for others, it must occur by the next scheduled engine shop visit but no later than 31 December 1991. The Act imposes specific obligations on the parties or entities it governs, primarily focusing on ensuring the airworthiness of the specified engines. Operators of PW100 series engines must follow the technical requirements as set out by Transport Canada. This includes adhering to the compliance timelines and ensuring that any necessary actions are taken to meet the directive's requirements. Furthermore, operators must ensure that any modifications or repairs are carried out by qualified personnel and in accordance with the specified guidelines. Breaches of the obligations imposed by the Civil Aviation Regulations 1998 may lead to civil or criminal consequences. The severity of these consequences can vary depending on the nature and extent of the breach. Under the Civil Aviation Act 1988, non-compliance with airworthiness directives can result in significant fines and, in severe cases, imprisonment. The exact penalties are determined by the courts and may include fines up to several thousand Australian dollars for individual offenders, and potentially much higher for corporate entities. Additionally, non-compliance can result in the grounding of affected aircraft until the required actions are completed, which can have substantial financial and operational impacts on the operators.