COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Propellers - Variable Pitch - Dowty Rotol
AD/PR/17 Hub Driving Centre Flange - Inspection NK
Applicability: All model R186/4-30-4/16 installed on Argosy 100 aircraft and not incorporating Mod. No. (c) VP 2381.
Document: Dowty Rotol SB No. 61-477, Rev. 1. Compliance: As detailed in the requirement document.
Overview
The Civil Aviation Regulations 1998, specifically Part 39 - 107, under the authority of the Civil Aviation Safety Authority, were enacted to ensure the safety and reliability of civil aviation in Australia. This legislative instrument, F2006B06315, addresses the specific issue of ensuring that propellers, particularly those of the variable pitch type manufactured by Dowty Rotol, are maintained in a safe and airworthy condition. The regulation was introduced to fill a gap in the oversight and maintenance of critical components of aircraft, such as the hub driving centre flange, which is vital for the safe operation of the aircraft. The policy objective, as stated, is to mandate regular inspections and maintenance of these components to prevent failures that could lead to serious safety incidents. The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, provide a comprehensive framework for the regulation of civil aviation, ensuring that all aircraft and their components meet the necessary safety standards.
Scope and Application
The Civil Aviation Regulations 1998, as amended, under the legislative instrument F2006B06315, specifically address the maintenance and safety standards for civil aviation in Australia. The Act applies to all individuals and entities involved in the operation and maintenance of aircraft, particularly focusing on the compliance of airworthiness directives such as those detailed in AD/PR/17 concerning the inspection of the hub driving centre flange for specific propeller models. This legislation applies to the entire Commonwealth, ensuring uniform safety standards across all states and territories. The Act mandates compliance with specified directives for all relevant aircraft, including model R186/4-30-4/16 installed on Argosy 100 aircraft, except those incorporating Mod. No. (c) VP 2381, as outlined in Dowty Rotol Service Bulletin No. 61-477, Rev. 1. The scope of the legislation extends to all propellers of the mentioned model to ensure safety and operational standards are met. The application of the Act can be extended or further specified through subordinate instruments, ensuring that the regulations remain adaptable to technological and operational advancements in the aviation industry.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 107, includes an Airworthiness Directive (AD) concerning the inspection of the hub driving centre flange on Dowty Rotol propellers, referenced as AD/PR/17 (section 1). This AD applies to all model R186/4-30-4/16 propellers installed on Argosy 100 aircraft, excluding those with Modification No. (c) VP 2381 (section 2). Compliance with this directive is mandated as per the detailed requirements outlined in Dowty Rotol Service Bulletin No. 61-477, Rev. 1 (section 3).
The primary obligation imposed by this directive is the inspection of the hub driving centre flange to ensure it is free from defects such as cracks, fretting, or any other form of damage that could compromise the structural integrity of the propeller (section 1). Operators of the affected aircraft must ensure that these inspections are conducted in accordance with the specifications provided in Dowty Rotol's Service Bulletin (section 3). The AD also requires that any detected issues be addressed promptly, and if necessary, the propeller should be repaired or replaced to meet the required airworthiness standards (section 4).
Failure to comply with the requirements of AD/PR/17 can lead to serious safety risks, potentially resulting in catastrophic failure of the propeller during flight. The Civil Aviation Safety Authority (CASA) has the authority to enforce compliance, and any non-compliance could result in enforcement actions. While specific penalties are not detailed in the text, violations of airworthiness directives can lead to substantial fines, suspension or revocation of aircraft certificates of airworthiness, and other regulatory actions (section 6). These measures are intended to ensure that all aircraft maintain the highest standards of safety and airworthiness.