Overview

The Civil Aviation Regulations 1998, which were enacted by the Parliament of the Commonwealth of Australia, establish the framework for ensuring the safety of civil aviation within the country. Specifically, Part 39 - 105 of these regulations includes a schedule of Airworthiness Directives intended to maintain and enhance the safety standards of aircraft. One such directive is AD/BELL 222/23, which addresses a critical issue identified in Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters. This directive was introduced to rectify the problem of insufficient interference fit between the swashplate rotating ring drive pins and the swashplate, which had been implicated in a crash of a Model 222 helicopter. The policy objective of this directive is to ensure the safe operation of these helicopters by requiring a torque test to confirm the correct fit, as per the relevant service bulletins, and to mandate compliance within a specified timeframe to prevent further incidents.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, pertains to the Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA). This particular directive, AD/BELL 222/23, applies exclusively to Bell Helicopter Textron Canada (BHTC) Model 222 series helicopters, including the Model 222, Model 222B, Model 222U, and Model 230, with specific serial number ranges detailed within the instrument. The mandate is for an inspection and torque test of the swashplate rotating ring drive pins to ensure they meet the correct interference fit, as prescribed by relevant service bulletins. This regulatory measure is necessitated by findings from a crash investigation that highlighted the criticality of proper pin fit to prevent fatigue failure. The directive imposes a compliance deadline of 55 flight hours post-issuance, but no later than 30 September 1999, and became effective from 14 July 1999. The geographical scope of this directive is national, as it is issued under Australian Commonwealth legislation, applying uniformly across the country. The directive does not specify any exclusions or exemptions, and compliance is non-negotiable for the specified aircraft within its jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, particularly PART 39 - 105, includes the Civil Aviation Safety Authority Schedule of Airworthiness Directives (AD) for specific aircraft models. In this case, AD/BELL 222/23 pertains to Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters, specifically Model 222, 222B, 222U, and Model 230 with certain serial numbers (section 2). The directive mandates a torque test to ensure the proper fit between the swashplate rotating ring drive pins and the swashplate itself. This requirement is based on service bulletins for each specific helicopter model (section 2). The compliance window for this inspection is within 55 flight hours from the effective date of the directive, but no later than 30 September 1999 (section 2). The directive became effective on 14 July 1999. The obligations imposed by this directive are stringent and require helicopter operators to perform a torque test on the specified drive pins to ensure they meet the necessary fit criteria as outlined in the applicable service bulletins. Operators must adhere to the stipulated compliance timeline, ensuring that inspections are conducted within 55 flight hours from the directive's effective date and no later than 30 September 1999. Failure to comply with these requirements may lead to serious safety concerns and potential grounding of the aircraft until the issue is rectified. Failure to comply with this Airworthiness Directive can result in significant consequences. The directive stems from an investigation into the crash of a Model 222 helicopter, where an insufficient interference fit between the swashplate rotating ring drive pin and the swashplate was identified as a critical factor. Such non-compliance could lead to safety risks, potentially resulting in severe accidents or even loss of life. Civil Aviation Regulations often include provisions for penalties for non-compliance, although specific penalties are not detailed in this excerpt. However, in general, penalties for breaching civil aviation regulations can include fines, suspension or revocation of aircraft certificates, and other regulatory actions that could affect the operator's ability to conduct flight operations.