COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
DHC-6 (Twin Otter) Series Aeroplanes
AD/DHC-6/28 Engine Compressor Inlet Screens - Icing Restrictions
8/71
Applicability: All models with PT6-20 and -27 engines using fine mesh engine compressor inlet screens.
Document: De Havilland Aircraft of Canada SB No. 6/282. Compliance: Before 1 September 1971.
Overview
The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, are a comprehensive set of rules designed to ensure the safety and efficiency of civil aviation within Australia. One particular legislative instrument under these regulations, F2006B09115, pertains to airworthiness directives for DHC-6 (Twin Otter) series aeroplanes. This directive was introduced to address the problem of icing restrictions in engine compressor inlet screens, specifically for models equipped with PT6-20 and -27 engines that use fine mesh screens. The policy objective behind this regulation is to enhance flight safety by mitigating the risks associated with ice ingestion into the engine, which can lead to engine failure. The instrument was enacted by the Civil Aviation Safety Authority, ensuring that all applicable aircraft meet the specified compliance requirements before a defined date, in this case, before 1 September 1971, as per De Havilland Aircraft of Canada Service Bulletin No. 6/282.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the airworthiness directives issued by the Civil Aviation Safety Authority (CASA) to ensure the safety of aircraft operations. This legislative instrument addresses the application of airworthiness directives to the DHC-6 (Twin Otter) series aeroplanes, focusing on the engine compressor inlet screens for those equipped with PT6-20 and -27 engines that use fine mesh screens. The directive mandates compliance for all models of these aircraft prior to 1 September 1971, with the reference document being De Havilland Aircraft of Canada Service Bulletin No. 6/282. The regulation applies to the operators and owners of these specific aircraft models, ensuring that they adhere to the prescribed safety measures. The geographic reach of these regulations is national, applying across all states and territories within Australia, and is enforced by CASA as the regulatory body. The regulations do not explicitly mention any exclusions, exemptions, or thresholds but rely on the detailed directives provided by the referenced service bulletin for compliance. The scope and specifics of these directives may be further extended or clarified through subordinate instruments issued by CASA.
Key Provisions
The Civil Aviation Regulations 1998, specifically in PART 39 - 105, mandate certain requirements for the airworthiness of DHC-6 (Twin Otter) Series Aeroplanes. Section 39-105(1) outlines the applicability of Airworthiness Directive (AD) concerning DHC-6 aeroplanes equipped with PT6-20 and -27 engines and fine mesh engine compressor inlet screens. Compliance with these directives is required before 1 September 1971, as referenced in Section 39-105(2). This legislation ensures that all relevant aircraft meet specific safety standards, particularly focusing on icing restrictions associated with the engine compressor inlet screens.
These provisions impose obligations on the owners and operators of DHC-6 series aeroplanes to ensure that their aircraft meet the specified airworthiness standards. They must adhere to the requirements stipulated by the Civil Aviation Safety Authority (CASA) to maintain the airworthiness of their aircraft, particularly concerning the installation and maintenance of the engine compressor inlet screens. This includes conducting necessary inspections, maintenance, and modifications as outlined in the referenced De Havilland Aircraft of Canada Service Bulletin No. 6/28.
Failure to comply with the provisions set out in the Civil Aviation Regulations 1998 can result in significant consequences. Section 39-105(3) states that non-compliance with the AD may lead to various civil and criminal penalties. The specific penalties for breaches of these regulations can include fines and imprisonment, depending on the severity of the non-compliance and the impact on aviation safety. The exact penalties are determined by the relevant authorities and can vary based on the circumstances of each case. It is crucial for operators to ensure strict adherence to these regulations to avoid any legal repercussions.