AD/G164/17 - Lower Wing Attachment Fittings - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, represent a comprehensive framework aimed at ensuring the safety and efficiency of civil aviation within the country. This legislative instrument includes various provisions, one of which is Part 39 - 105, addressing Airworthiness Directives for specific aircraft models. The Civil Aviation Safety Authority (CASA) issues these directives to address identified safety issues and ensure compliance with safety standards. One such directive is AD/G164/17 concerning the Schweizer (Grumman) G-164 (Ag-Cat) series aeroplanes, which was introduced to address the problem of potential structural weaknesses in the lower wing attachment fittings. The policy objective of this directive is to mandate regular inspections of these fittings to prevent catastrophic failure, thereby enhancing overall aviation safety. The directive specifies that all models G-164, G-164A, and G-164B must undergo inspection once they have accumulated 500 flying hours or have been in service for six months, whichever comes first. Compliance is required within 25 hours after 6 November 1978, and subsequent inspections must occur at intervals not exceeding 500 hours of flight time or six months, whichever is sooner. This regulation aims to mitigate the risk of in-flight structural failure by ensuring that the lower wing attachment fittings are regularly examined and maintained in accordance with the specified schedule.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Schweizer (Grumman) G-164 (Ag-Cat) series aeroplanes, including models G-164, G-164A, and G-164B, that have accumulated 500 flying hours or have been in service for 6 months. This legislation is overseen by the Civil Aviation Safety Authority (CASA) and is designed to ensure the airworthiness of these aircraft through mandated inspections of lower wing attachment fittings. Compliance with this directive is mandatory and must occur within 25 hours of time in service after 6 November 1978, and subsequently at intervals not exceeding 500 hours of time in service or 6 months, whichever comes first. The scope of this regulation is national, encompassing all such aircraft within Australia, and is implemented to maintain the safety standards as prescribed by CASA. This legislation does not specify any exclusions or exemptions but relies on the Gulfstream American AG-CAT (G164) Service Bulletin No. 65 for detailed inspection procedures.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39, establish various safety directives that govern the operation and maintenance of aircraft in Australia. Specifically, Section 105, which pertains to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, mandates that certain aircraft models adhere to specific safety requirements. For instance, Section AD/G164/17 pertains to the inspection of lower wing attachment fittings on Schweizer (Grumman) G-164 (Ag-Cat) Series Aeroplanes (Section 12/78). This section applies to all models G-164, G-164A, and G-164B that have accumulated 500 flying hours or have been in service for 6 months (Section 1). The obligations imposed by this directive are clear and specific. Operators of the affected aircraft must ensure that the lower wing attachment fittings are inspected in accordance with the guidelines set forth in Gulfstream American AG-CAT (G164) Service Bulletin No. 65 (Section 12/78). The inspection must be carried out within 25 hours of time in service following 6 November 1978, and then at intervals not exceeding 500 hours of time in service or 6 months, whichever comes first (Section 12/78). This requirement is intended to maintain the structural integrity of the aircraft and ensure safety in operation. Failure to comply with these airworthiness directives can lead to severe consequences. Under Section 91.703 of the Civil Aviation Regulations 1998, any person who fails to comply with an airworthiness directive is subject to a civil penalty. The maximum penalty for a body corporate can be significant, reaching up to 500 penalty units, which is currently equivalent to AUD 50,000. This penalty is designed to enforce adherence to safety standards and protect the public from potential hazards arising from non-compliance. Furthermore, persistent non-compliance can also lead to criminal charges. Section 91.705 of the Regulations stipulates that continued operation of an aircraft in violation of an airworthiness directive can result in prosecution, with penalties including fines and imprisonment. The severity of these penalties underscores the importance of adhering to the directives to ensure the safety and reliability of civil aviation operations in Australia.