AD/PAP/7 Amdt 1 - Replacement of Hub to Master Gear Mounting Bolts

Overview

The Civil Aviation Regulations 1998, as amended by the legislative instrument F2006B06051, address issues related to the airworthiness of aircraft propellers, specifically those produced by Allison/Aeroproducts. This legislation was enacted to ensure the safety of civil aviation by establishing directives for maintaining the airworthiness of specific aircraft components. The objective of these regulations is to mitigate risks associated with the operation of aircraft by providing clear and enforceable directives for maintenance and replacement of critical parts, such as the hub to master gear mounting bolts in Allison model propellers. The regulations were enacted by the Parliament of the Commonwealth of Australia and are administered by the Civil Aviation Safety Authority (CASA), which aims to ensure compliance with the highest safety standards in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 107, concerns the safety directives issued by the Civil Aviation Safety Authority (CASA). This legislation mandates the replacement of hub to master gear mounting bolts for certain propellers, namely those of model A6441 FN-606 and A6441 FN-606A. This directive applies to any aircraft that possess these specific propeller models, regardless of whether they are operated by individuals, companies, or any other entities within the aviation sector. The geographic reach of these regulations is national, ensuring compliance across the Commonwealth of Australia. This directive does not apply to propellers that have already been compliant with the specified directives, such as Allison CPB 63-317, Allison CSL 189, or FAA AD 67-20-1, before 1 November 1967. The regulations are enforced through the issuance of Airworthiness Directives, and compliance is a mandatory requirement for the continued airworthiness of the specified aircraft models.

Key Provisions

The key operative sections of the Civil Aviation Regulations 1998 (Part 39 - 107) in the context of the Airworthiness Directives for propellers with variable pitch, specifically Allison/Aeroproducts, mandate the replacement of the hub to master gear mounting bolts for certain propeller models. This directive is outlined in AD/PAP/7 Amendment 1 (section 1.1) and applies to all model A6441 FN-606 and A6441 FN-606A propellers. The directive requires compliance with specific documentation, such as Allison CPB 63-317, Allison CSL 189, or FAA AD 67-20-1, and compliance must be achieved before 1 November 1967 (section 1.2). The obligations and requirements imposed by this Act on the parties or entities governed by it are clear and specific. Owners and operators of the affected propellers must ensure that the hub to master gear mounting bolts are replaced in accordance with the referenced documentation. This directive is intended to address a known safety issue, thus ensuring the continued airworthiness of the aircraft using these propellers. The replacement must be completed and verified by a certified repair facility or a similarly qualified entity to ensure compliance with safety standards (section 2.1). Failure to comply with the Airworthiness Directives can result in serious consequences. Under the Civil Aviation Act 1988, non-compliance with airworthiness directives can lead to civil penalties, including fines and potential criminal charges. For instance, knowingly operating an aircraft that does not comply with these directives can result in substantial fines and imprisonment. The maximum penalties for such breaches are detailed in the Civil Aviation Regulations, with fines potentially reaching up to $275,000 for corporations and $55,000 for individuals, along with imprisonment terms that may extend up to five years (section 3.1). Additionally, any person found in breach of these directives may also face administrative action, including the suspension or revocation of their aircraft maintenance license or certification.