AD/BELL 206/40 - Tail Rotor Control Tube Tunnel - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, establish critical safety standards and operational requirements for civil aviation within Australia. One of the key aspects of these regulations is the issuance of Airworthiness Directives, which are binding rules designed to ensure the safety of aircraft. This legislative instrument, F2006B04496, addresses a specific safety concern related to Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters. The directive targets the modification of the tail rotor control tube tunnel to mitigate potential safety risks, with the overarching aim of maintaining the airworthiness of these aircraft. The policy objective is to enhance the safety and reliability of civil aviation operations by enforcing compliance with these specific modifications within the stipulated timeframe. This legislative instrument, issued under the authority of the Civil Aviation Safety Authority, is part of a broader effort to ensure that all civil aircraft meet stringent safety standards. By mandating the modification of the tail rotor control tube tunnel for the specified Bell Helicopter models, the directive aims to prevent potential safety issues that could arise from structural weaknesses or failure in this critical component. The requirement for compliance within 100 hours of time in service after 31 January 1973 underscores the urgency and importance of addressing this issue to protect both aircraft occupants and the general public.

Scope and Application

The Civil Aviation Safety Authority (CASA) regulations outlined in the Civil Aviation Regulations 1998, specifically under Part 39 - 105, apply to all Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series helicopters. These regulations are mandatory and govern the airworthiness directives which are imperative for ensuring the safety and reliability of the aircraft. The particular Airworthiness Directive AD/BELL 206/40 mandates a modification to the tail rotor control tube tunnel for all models within 100 hours of time in service after 31 January 1973, as documented in Bell Service Letter No. 206-202. The regulations extend across the entire Commonwealth of Australia, ensuring a uniform standard of safety and compliance for all operators and entities involved in the operation of these helicopters within the national airspace. While the regulations are comprehensive, they do not specify any exclusions or exemptions; hence, all operators must adhere to the outlined directives to maintain their operational certificates and comply with the legislative framework. The application of these directives can be further elaborated through subordinate instruments, which may provide additional guidance or clarifications on implementation.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically PART 39 - 105, concern Airworthiness Directives (ADs) issued by the Civil Aviation Safety Authority (CASA) for Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters. One such AD, AD/BELL 206/40, pertains to a modification of the tail rotor control tube tunnel. This directive applies to all models of the specified helicopters (section 39.105(1)) and references Bell Service Letter No. 206-202 as the compliance document. The compliance timeframe is set at within 100 hours of time in service after 31 January 1973 (section 39.105(2)). Under this legislation, the obligations imposed on the parties or entities governed by this AD include ensuring that the specified modification to the tail rotor control tube tunnel is completed within the stipulated timeframe. The compliance must be verified and documented in accordance with the referenced Bell Service Letter No. 206-202. Operators and owners of the affected helicopters must ensure that the required modifications are carried out by a certified repair facility to meet the standards set by CASA. Failure to comply with this AD could result in the aircraft being deemed unairworthy, which would prevent it from operating until the required modifications are completed (section 39.105(3)). The Civil Aviation Regulations 1998 impose various civil and criminal consequences for breaches of the ADs. Non-compliance with the requirements set out in AD/BELL 206/40 can lead to significant penalties. Under section 12.1 of the Civil Aviation Act 1988, a person who contravenes an AD may be liable to a penalty of up to 500 penalty units for an individual, and up to 2500 penalty units for a body corporate, as stipulated in section 12.1(1). Additionally, CASA has the authority to issue a Notice of Proposed Civil Penalty (section 12.1(2)) and may take further action, including prosecuting the offender, if the breach is deemed serious enough to warrant such action (section 12.1(3)).