AD/SM-205/32 - Engine Induction Valve Assembly P/No. 205-5-260-101 or P/No. 205-5-260-01 - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, aim to ensure the safety and efficiency of civil aviation within the country. One specific regulation within this framework, known as AD/SM-205/32, pertains to the modification of the engine induction valve assembly for SIAI Marchetti S205 and S208 Series Aeroplanes. This legislative instrument was introduced to address the identified problem of breakage or loss of pins securing the butterfly to the valve, which had been reported in overseas incidents. The policy objective is to mitigate the risk of such failures by requiring compliance with specific maintenance actions within a defined timeframe. The regulation applies to all S205/20F and S205/20R models with serial numbers referenced in SIAI Marchetti SB No. 205B55 or listed in subsequent issues of that service bulletin, mandating that the required modifications be completed within 100 hours of time in service after 31 May 1982.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to SIAI Marchetti S205 and S208 series aeroplanes, namely the S205/20F and S205/20R models with specific serial numbers as referenced in SIAI Marchetti SB No. 205 B55 or listed in subsequent issues of that service bulletin. This regulation is concerned with the modification of the engine induction valve assembly, specifically parts P/No. 205-5-260-101 or P/No. 205-5-260-01. The directive mandates that any such modifications be carried out within 100 hours of time in service after 31 May 1982, unless already completed, to address the issue of breakage or loss of the MS 9048-006 pins securing the butterfly to the valve, which has been reported overseas. The regulation operates under the authority of the Commonwealth of Australia and applies nationally, ensuring compliance across all states and territories. There are no stated exclusions or exemptions in this directive, and it extends its application through subordinate instruments as detailed in SIAI Marchetti SB No. 205 B55 or RAI AD 82-10/5205-47.

Key Provisions

The primary sections of the Civil Aviation Regulations 1998 (CAR) pertaining to the SIAI Marchetti S205 and S208 series aeroplanes are found within Part 39, specifically in the Airworthiness Directive (AD) AD/SM-205/32. This directive addresses the modification required for the engine induction valve assembly for certain S205/20F and S205/20R models, specifically those with serial numbers (S/Nos) referenced in SIAI Marchetti SB No. 205 B55 or listed in subsequent issues of that Service Bulletin (SB). The directive mandates that these models undergo a modification to the engine induction valve assembly, particularly focusing on the replacement or reinforcement of the MS 9048-006 pins securing the butterfly to the valve. This action is necessary to prevent breakage or loss of these pins, a problem that has been identified overseas. The obligations imposed by the AD/SM-205/32 are clear: operators of the affected S205/20F and S205/20R models must ensure compliance with the directive within 100 hours of time in service after 31 May 1982, unless the required modification has already been completed. Compliance is to be evidenced by documentation such as SIAI Marchetti SB No. 205 B55 or RAI AD 82-10/5205-47. These documents serve as the basis for verifying that the necessary modifications have been carried out correctly, ensuring that the aircraft meets the required airworthiness standards. Failure to comply with the provisions outlined in AD/SM-205/32 can result in severe consequences. The Civil Aviation Regulations 1998 stipulate that non-compliance with airworthiness directives is an offence under the Civil Aviation Act 1988. This non-compliance can lead to civil penalties, which may include fines. The specific penalties are determined based on the severity of the breach and the regulatory framework in place, which may impose fines commensurate with the risk posed by the non-compliance. Additionally, continued operation of an aircraft that does not meet the required airworthiness standards can result in the aircraft being deemed unsafe, potentially leading to its grounding and further enforcement actions against the operator.