AD/AC-CLA/5 - Shock Strut Assembly

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safety and efficiency of civil aviation within the country. One of the legislative instruments under this act, F2006B02198, specifically addresses the maintenance and safety of aircraft parts, particularly targeting the A-9 series aeroplanes. This instrument introduces a series of airworthiness directives to maintain the structural integrity and operational safety of aircraft, focusing on the inspection of critical components such as the main landing gear shock strut assemblies. The policy objective is to mitigate risks associated with wear and tear, particularly the reduction of wall thickness due to contact with the inner spring, by mandating regular and thorough inspections. This instrument was introduced to address potential safety gaps that could compromise the reliability of aircraft components over time, ensuring compliance at each major inspection following a specified date.

Scope and Application

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, addresses the regulation of aircraft airworthiness directives for the A-9 series aeroplanes, including the requirement for inspection of main landing gear shock strut assemblies P/N 12018. This regulation applies to all A-9 series aircraft, ensuring that the aircraft remain compliant with safety standards as set forth by the Civil Aviation Safety Authority. The directive mandates that these shock strut assemblies must be disassembled and inspected for their general condition, with particular attention given to the bore of the tube to check for any reduction in wall thickness due to contact with the inner spring. Compliance with this directive is required at the next major inspection following 30 April 1975, and subsequently at each major inspection, ensuring continuous maintenance of the aircraft’s safety and airworthiness. The application of this regulation is broad, encompassing all A-9 series aeroplanes within the Commonwealth of Australia, governed under the national civil aviation safety framework.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39, Section 105, detail the Civil Aviation Safety Authority’s (CASA) requirements for the maintenance and inspection of A-9 series aircraft. Section A-9 pertains to the shock strut assembly of these aircraft, with AD/AC-CLA/5 focusing on the main landing gear shock strut assemblies, particularly those with the part number 12018. According to this directive, the shock strut assemblies must be disassembled and thoroughly inspected to assess their general condition. Inspectors should pay particular attention to the bore of the tube for any signs of wall thickness reduction caused by contact with the inner spring. The regulations impose a clear set of obligations on aircraft operators and maintenance personnel. They are required to comply with the shock strut assembly inspection requirements at the next major inspection following 30 April 1975 and subsequently at each major inspection. This directive mandates that operators ensure the aircraft’s components are inspected to maintain the highest standards of safety and reliability. Failure to comply with these inspection requirements could lead to serious safety issues, making adherence to these provisions critical for the safety of all flights. In the event of non-compliance with these airworthiness directives, several consequences may follow. Firstly, the breach of these safety requirements could result in enforcement actions by CASA, potentially leading to the grounding of non-compliant aircraft until the necessary inspections and repairs are completed. Furthermore, operators found in violation of these regulations may face civil penalties, which can be substantial. While specific monetary penalties are not detailed in the provided text, the consequences for failing to adhere to these critical safety measures can be severe and may include administrative fines, as well as the potential for criminal charges if the breach results in safety incidents or accidents. Ensuring strict compliance is therefore not only a regulatory requirement but also essential for the safety and integrity of air travel.