COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
SIAI Marchetti S205 and S208 Series Aeroplanes
AD/SM-205/33 Exhaust System Muffler Assembly - Inspection - Replacement
9/83
Applicability: All S205-22R aircraft fitted with muffler assembly P/Ns. 870-8 or P/Ns. 870-9. Document: SIAI Marchetti SB No. 205B56.
Compliance: Within 100 hours time in service after 30th September 1983, or, when muffler assembly has accumulated 500 hours time in service, which- ever occurs later, after 30 September 1983. Thereafter, at intervals of 100 hours time in service.
Background: Instances of detachment of the muffler baffling have been reported by the manufacturer which can result in partial or complete loss of engine power.
Overview
The Civil Aviation Regulations 1998, amended through the legislative instrument F2006B07055, address the specific issue of exhaust system muffler assembly detachment in SIAI Marchetti S205 and S208 series aeroplanes. This regulation was enacted to ensure the safety and airworthiness of these aircraft by mandating inspections and replacements of the muffler assembly. The Civil Aviation Safety Authority (CASA) introduced this directive to mitigate the risk of partial or complete loss of engine power due to the detachment of the muffler baffling, a problem previously reported by the manufacturer. Compliance with these regulations is essential to maintain the safety standards required for these aircraft to operate within Australian airspace.
The policy objective of these regulations is to prevent incidents that could compromise the safety and operational integrity of the affected aircraft. By enforcing regular inspections and timely replacements of the muffler assembly, CASA aims to ensure that all S205-22R aircraft fitted with the specified muffler assembly part numbers remain airworthy. This legislative measure underscores the importance of proactive safety measures in civil aviation to protect both the aircraft and those on board.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertain to the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives, which includes AD/SM-205/33 concerning the SIAI Marchetti S205 and S208 series aeroplanes. This legislation applies to all S205-22R aircraft that are fitted with muffler assemblies P/Ns 870-8 or P/Ns 870-9. The Act mandates that these aircraft must undergo inspection and, if necessary, replacement of the exhaust system muffler assembly within 100 hours of time in service after 30 September 1983, or when the muffler assembly has accumulated 500 hours of time in service, whichever occurs later. Following the initial compliance, inspections and replacements must be conducted at intervals of 100 hours of time in service. This directive is essential to prevent the detachment of the muffler baffling, which has been reported to potentially result in partial or complete loss of engine power, thus ensuring the continued airworthiness and safety of these aircraft within Australia's jurisdiction.
Key Provisions
The main sections of the Civil Aviation Regulations 1998 (Regulations), specifically Part 39 - 105, mandate the issuance of airworthiness directives (AD) to ensure the safety of aircraft in operation. Section 39-105 of the Regulations empowers the Civil Aviation Safety Authority (CASA) to issue these directives, which in this case are outlined in AD/SM-205/33. This directive applies to all S205-22R aircraft fitted with specific muffler assembly part numbers (870-8 or 870-9). The directive mandates that an inspection and, if necessary, replacement of the exhaust system muffler assembly must be performed under the conditions specified.
Under the Regulations, the AD imposes a clear obligation on aircraft operators to comply with the airworthiness directive issued by CASA. Specifically, for the affected aircraft, compliance with the directive requires an inspection and replacement of the muffler assembly within 100 hours of time in service after 30 September 1983, or when the muffler assembly has accumulated 500 hours of time in service, whichever occurs later. After this initial compliance, inspections must be performed at intervals of 100 hours of time in service thereafter. This ensures that the potential issue of muffler detachment, which can lead to a loss of engine power, is addressed promptly and regularly.
Failure to comply with the AD may result in serious safety concerns and legal consequences. Under the Civil Aviation Act 1988, non-compliance with an airworthiness directive can lead to enforcement actions. If an aircraft is found to be operating in breach of an AD, CASA may take enforcement measures which could include grounding the aircraft, imposing fines, or other regulatory actions. The potential penalties for such breaches can be substantial, reflecting the importance of adhering to airworthiness directives to ensure the safety of all persons on board and the overall integrity of the aviation system.