AD/PROP/2 Amdt 4 - Feathering Propellers - Functional Check

Overview

The Civil Aviation Safety Regulations 1998 were amended by AD/PROP/2 Amdt 4 in 2016 to address a specific safety issue concerning feathering propellers on piston engine aircraft. This amendment was introduced to limit the applicability of a previous airworthiness directive (AD/PROP/2 Amdt 3) issued in 2006, aiming to ensure that requirements are not duplicated across different regulatory instruments. The Civil Aviation Safety Authority (CASA), acting under the powers conferred by the Civil Aviation Act 1988, issued this amendment to align with the regulatory framework outlined in Part 42 of the Civil Aviation Safety Regulations 1998 and Civil Aviation Order 100.5. The policy objective behind this amendment is to streamline regulatory requirements and maintain the highest standards of air safety by ensuring that the AD applies only to the relevant category of aircraft. This approach helps to avoid redundancy and confusion, thereby supporting the overarching goal of continuing airworthiness as mandated by international civil aviation conventions.

Scope and Application

The AD/PROP/2 Amdt 4 under the Civil Aviation Safety Regulations 1998 applies to the continuing airworthiness of aircraft with feathering propellers, specifically targeting those that fall under Part 42 of the Civil Aviation Safety Regulations 1998. This legislative instrument is issued by the Civil Aviation Safety Authority (CASA) and is effective within the jurisdiction of Australia, ensuring compliance with international standards as outlined in Annex 8 to the Convention on International Civil Aviation. The amendment refines the scope of AD/PROP/2 Amdt 3, originally issued in 2006, by restricting its application to aircraft subject to Part 42, while other aircraft are subject to the requirements set out in Civil Aviation Order 100.5. The AD is a legislative instrument that is subject to repeal, amendment, or variation under the Civil Aviation Act 1988 and the Acts Interpretation Act 1901. The changes introduced by AD/PROP/2 Amdt 4 are considered minor and do not necessitate further consultation or a Regulation Impact Statement, aligning with the established practices between CASA and the Office of Best Practice Regulation. Additionally, the instrument is compatible with human rights as it does not engage any of the applicable rights or freedoms, as stated in the accompanying Statement of Compatibility with Human Rights.

Key Provisions

The Civil Aviation Safety Regulations 1998, as amended by AD/PROP/2 Amdt 4, pertain specifically to feathering propellers on piston engine aircraft, focusing on the functional checks required to ensure airworthiness (section 39.001). This legislative instrument limits the applicability of the airworthiness directive (AD) to aircraft to which Part 42 of the Civil Aviation Safety Regulations 1998 applies, while transitioning the requirements for other aircraft to Civil Aviation Order (CAO) 100.5. This amendment was made to avoid duplication and streamline regulatory requirements, ensuring that safety standards are effectively and efficiently maintained across different categories of aircraft (section 98(5B) and (5BA)). The AD imposes specific obligations on aircraft operators and maintenance personnel to conduct regular functional checks on feathering propellers to ensure compliance with the revised regulatory framework. These checks must be carried out in accordance with the detailed procedures and specifications outlined in the AD, ensuring that the propellers are functioning correctly and safely. The AD also mandates that any findings or issues identified during these checks must be reported to the Civil Aviation Safety Authority (CASA) and addressed promptly to maintain airworthiness standards (section 39.001). Failure to comply with the requirements of the AD can result in severe consequences, including civil and criminal penalties. Operators found non-compliant may face fines and sanctions under the Civil Aviation Act 1988, which can include substantial monetary penalties. Additionally, CASA may take enforcement actions such as grounding the aircraft until compliance is achieved, which could lead to operational disruptions and financial losses for the operator (section 98(5B) and (5BA)). Non-compliance not only risks these penalties but also poses significant safety hazards, potentially leading to accidents or incidents that could endanger lives. In summary, the AD/PROP/2 Amdt 4 establishes clear requirements for the functional checks of feathering propellers on piston engine aircraft, limiting the AD’s applicability to streamline regulatory compliance. The AD mandates specific obligations for operators and maintenance personnel to ensure these checks are conducted regularly and accurately. Non-compliance with these requirements can result in severe civil and criminal penalties, including fines and potential aircraft groundings, underscoring the importance of adhering to the AD to maintain the highest safety standards in civil aviation.