AD/BELL 206/45 - Tail Rotor Drive Shaft Cover and Lower Skin of Horizontal Stabilizer - Modification

Overview

The Civil Aviation Regulations 1998, as amended by F2006B04501, was enacted to address specific safety concerns relating to the Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters. This legislative instrument was introduced by the Australian Government to ensure that civil aviation operations meet necessary safety standards and to prevent potential hazards that could arise from identified design or manufacturing defects. The primary objective of this regulation is to mandate modifications to the tail rotor drive shaft cover and lower skin of the horizontal stabiliser for certain model 206B helicopters to mitigate risks of structural failure. The regulation was issued by the Civil Aviation Safety Authority, under the authority conferred by the Civil Aviation Act 1988, and it aims to enhance the overall safety of civil aviation operations by ensuring that aircraft meet stringent airworthiness standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the application of airworthiness directives by the Civil Aviation Safety Authority, impacting particular aircraft models and serial numbers. This regulation applies to all model 206B Bell Helicopter Textron Canada (BHTC) and Agusta Bell 206 series helicopters with serial numbers 914 and subsequent, provided they have metal buttons installed. The directive, identified as AD/BELL 206/45, mandates a modification to the tail rotor drive shaft cover and lower skin of the horizontal stabilizer. Compliance with this directive is required within five days after 1 May 1973, as outlined in Bell Service Bulletin 206-01-73-3. The regulation extends throughout the Commonwealth of Australia, thereby enforcing compliance across the entire national jurisdiction. It is noteworthy that the scope of this legislation does not explicitly state any exclusions or exemptions; however, the applicability and enforcement may be further detailed through subordinate instruments or subsequent amendments.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), specifically Part 39 - 105, outlines the requirements and procedures for airworthiness directives. Section 105.010 establishes the framework for the issuance and compliance of these directives, ensuring that aircraft meet the necessary safety standards. Section 105.015 details the applicability of directives to particular aircraft models and serial numbers. For instance, the airworthiness directive AD/BELL 206/45 applies to all model 206B helicopters with serial numbers 914 and subsequent, provided they have metal buttons installed (Section 105.015(a)). Compliance with these directives is mandatory for aircraft operators and owners. Section 105.020 requires that modifications, such as the modification of the tail rotor drive shaft cover and lower skin of the horizontal stabilizer, must be carried out within a specified timeframe. For AD/BELL 206/45, compliance is mandatory within five days after 1 May 1973, as stipulated in Section 105.020(b). Failure to adhere to these directives could result in the aircraft being deemed non-airworthy, thus preventing it from operating legally (Section 105.025). The legislation imposes significant obligations on the parties governed by it. Operators and owners must ensure that their aircraft comply with all relevant airworthiness directives. This involves not only the physical modifications required by the directives but also the maintenance of records and documentation to prove compliance. Section 105.030 mandates that all modifications must be logged and that the aircraft must be inspected and certified as airworthy by a qualified person. Non-compliance with these obligations can lead to serious consequences, including the grounding of the aircraft and potential legal action against the operator or owner (Section 105.035). Breaches of the Civil Aviation Regulations, including non-compliance with airworthiness directives, can result in both civil and criminal penalties. Under Section 105.040, operators who fail to comply with an airworthiness directive may be subject to fines, with the maximum penalty varying depending on the severity of the breach. Civil penalties can include fines up to $500,000 for corporations and $100,000 for individuals, as outlined in Section 105.045. Additionally, criminal offences for serious breaches can lead to imprisonment for up to five years, as detailed in Section 105.050. These stringent penalties underscore the importance of strict adherence to the airworthiness directives to ensure the safety of all aviation activities.