AD/PR/14 - Blade Retaining Bolt Locking Segment - Replacement

Overview

The Civil Aviation Regulations 1998 (Cth) were enacted to regulate civil aviation activities within Australia, ensuring safety and consistency in the sector. One specific legislative instrument, F2006B06312, addresses the issue of airworthiness for aircraft propellers, particularly those manufactured by Dowty Rotol. This directive, AD/PR/14, pertains to the replacement of the NK segment of blade retaining bolt locking on variable pitch propellers, as outlined in Dowty Rotol Service Bulletin No. 61-714, Revision 1. The policy objective is to maintain the airworthiness of aircraft by mandating compliance with specified maintenance and safety standards, particularly in light of the historical context provided by the requirement document. The Australian Parliament established this regulation through the Civil Aviation Act 1988 (Cth), empowering the Civil Aviation Safety Authority to issue such directives to safeguard public safety in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 107, specifically addresses airworthiness directives concerning aircraft propellers, with a focus on variable pitch propellers manufactured by Dowty Rotol. The regulation in question, AD/PR/14, mandates the replacement of the blade retaining bolt locking NK segment for these propellers. This directive applies to any person or entity involved in the maintenance, repair, or overhaul of Dowty Rotol variable pitch propellers installed on aircraft. The geographic reach of this legislation is national, applying across all states and territories within Australia. The regulation requires compliance before the next overhaul after 1 January 1972, as outlined in Dowty Rotol Service Bulletin No. 61-714, Revision 1. The legislation does not explicitly state any exclusions, exemptions, or thresholds; however, it does indicate that the application of the directive may be extended or restricted through subordinate instruments, which may provide further clarification or additional requirements.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 and 107, establish the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, focusing on propellers, particularly those of the variable pitch type manufactured by Dowty Rotol. Within this schedule, AD/PR/14 addresses blade retaining bolt locking, specifically the NK segment replacement (sections 39 and 107). This directive applies to propellers as detailed in the requirement document, which references Dowty Rotol Service Bulletin No. 61-714, Revision 1. The directive mandates compliance before installation in an aircraft following the next overhaul completed after 1 January 1972. Under this legislation, entities such as aircraft maintenance organisations, propeller manufacturers, and operators must ensure adherence to the specified requirements. Specifically, they are required to replace the blade retaining bolt locking NK segment in compliance with Dowty Rotol SB No. 61-714, Rev. 1. This ensures that the propellers meet the necessary safety standards, reducing the risk of in-flight failures or accidents. The legislation demands thorough documentation of any replacement to maintain a clear record of compliance. Failure to comply with these provisions may result in serious consequences. Non-compliance could lead to potential safety hazards, rendering the aircraft non-airworthy. From a legal standpoint, operators or entities found in breach of these directives could face significant penalties. Although the exact penalties are not specified in the text provided, breaches of civil aviation regulations can typically result in substantial fines and potential criminal charges under the Civil Aviation Act 1988. These penalties serve as a deterrent to ensure adherence to safety standards and the maintenance of airworthiness.