AD/PHS/1 - Model 23260 and 43E-60 Low Pitch Stop Assembly - Modification

Overview

The Civil Aviation Regulations 1998, as amended by the Legislative Instrument F2006B06186, address the need for specific airworthiness directives to ensure the safety of aircraft operations. This legislation, enacted by the Australian Parliament, aims to enhance the safety standards in civil aviation by implementing mandatory modifications to certain aircraft components. One such directive pertains to the modification of the low pitch stop assembly for model 23260 and 43E-60 propellers manufactured by Hamilton Standard. The policy objective is to mitigate risks associated with the operation of these propellers, ensuring they comply with safety standards before installation in aircraft. This directive is applicable to all model 23260 and 43E-60 propellers and requires compliance with specified documents such as Hamilton Standard Service Bulletins and relevant Australian National Aviation Orders.

Scope and Application

The Civil Aviation Regulations 1998, as amended, apply comprehensively to all aspects of civil aviation within Australia, encompassing various entities such as aircraft operators, pilots, maintenance personnel, and manufacturers. Specifically, Part 39, which includes the 107 Civil Aviation Safety Authority Schedule of Airworthiness Directives, mandates that all model 23260 and 43E-60 propellers adhere to the specified airworthiness directives. This directive is applicable to all relevant aircraft regardless of their registration within the Commonwealth, ensuring a uniform standard of safety across the industry. The legislative instrument F2006B06186 (AD/PHS/1) focuses on the modification of the low pitch stop assembly for Hamilton Standard propellers, as outlined in the referenced documents including Hamilton Standard Service Bulletin Nos. 273 and 273A, Advisory Notice 107.1.5.0.1.1, and FAA Airworthiness Directive 54-1-2. Compliance with these directives is mandatory before the propellers are installed in an aircraft, underscoring the stringent safety measures enforced to mitigate potential hazards. The regulations extend their reach to ensure that all modifications are executed in adherence to the prescribed standards, thereby maintaining the highest levels of safety and reliability in civil aviation.

Key Provisions

The Civil Aviation Regulations 1998, particularly under Part 39 - 107, include a section that outlines specific Airworthiness Directives for propellers, specifically those of the Variable Pitch variety by Hamilton Standard (section 12/65). This legislation mandates modifications to the low pitch stop assembly for certain propeller models, namely the 23260 and 43E-60, to ensure safety and compliance with aviation standards. The directive requires the modifications to be completed before the propellers are installed in an aircraft, ensuring that the safety concerns addressed by the Airworthiness Directives are rectified prior to operational use. The obligations imposed by this Act are primarily concerned with the modification of the low pitch stop assembly for the specified propeller models. The modifications must align with the guidance provided in Hamilton Standard Service Bulletins Nos. 273 and 273A, Advisory Notice (ANO) 107.1.5.0.1.1, or the Federal Aviation Administration (FAA) Airworthiness Directive (AD) 54-1-2. This means that any entity or individual responsible for the maintenance or installation of these propellers must ensure that the modifications are carried out as specified in these documents. Compliance involves a thorough inspection and, if necessary, modification of the low pitch stop assembly to meet the safety standards outlined in the referenced documents. Failure to comply with these Airworthiness Directives can lead to severe consequences. The legislation does not explicitly state the penalties for non-compliance; however, under the broader framework of civil aviation regulations, breaches can result in significant civil or criminal penalties. The Civil Aviation Safety Authority (CASA) may impose fines, suspension or revocation of airworthiness certificates, or other regulatory actions against entities that fail to comply with airworthiness directives. Additionally, if the non-compliance leads to an accident or incident, the consequences could be even more severe, potentially involving criminal charges against responsible individuals or entities.