AD/HS 125/113 Amdt 1 - MLG Side Stay Arm Assemblies and Torque Links

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, govern the safe operation of civil aviation in Australia. One specific aspect of this regulation is Part 39 - 105, which pertains to airworthiness directives. These directives aim to ensure that all aircraft meet specific safety standards to mitigate risks associated with aviation operations. The legislative instrument F2006B10391, pertaining to British Aerospace BAe 125 Series Aeroplanes, was introduced to address specific safety concerns regarding the main landing gear side stay arm assemblies and torque links of Series 800A and 800B aircraft. The problem this instrument addresses is the potential for damage and cracks in these components, which could lead to catastrophic landing gear failure if left undetected. This legislative instrument mandates compliance with British Aerospace Service Bulletin 32-227 and reinstates the original airworthiness directive issued on 30 November 1990, with an amendment effective from 23 April 1998. The policy objective behind this legislative instrument is to ensure that all BAe 125 Series Aeroplanes conform to safety standards that prevent potential hazards associated with landing gear failure. By reinstating and amending the airworthiness directive, the Civil Aviation Safety Authority aims to maintain the highest safety standards for aircraft operating in Australian airspace, thereby protecting passengers, crew, and the public from the risks associated with compromised landing gear components. This regulation is crucial in maintaining the integrity and safety of the nation's aviation fleet, aligning with the overarching goal of the Civil Aviation Regulations 1998 to safeguard the public and ensure the safe operation of civil aircraft.

Scope and Application

The Civil Aviation Regulations 1998, as detailed in PART 39 - 105 and amended through the Civil Aviation Safety Authority Schedule of Airworthiness Directives, specifically addresses the maintenance and safety standards for British Aerospace BAe 125 Series aeroplanes. This regulation applies directly to Series 800A and 800B aeroplanes, focusing on the mandatory compliance with BAe SB 32-227 concerning the MLG Side Stay Arm Assemblies and Torque Links. This requirement is crucial to prevent potential landing gear failures that could result from undetected damage and cracks in the main landing gear side stay. The directive ensures that any aeroplanes manufactured prior to 30 November 1990 adhere to these safety measures, with the amendment becoming effective on 23 April 1998. The regulation is enforced nationally across Australia, ensuring uniform safety standards are upheld across all states and territories. There are no stated exclusions or exemptions within the scope of this directive, as its primary aim is to maintain the airworthiness of the specified aircraft models. The Civil Aviation Safety Authority can extend or restrict the application of this directive through subordinate instruments as necessary to ensure ongoing compliance and safety in civil aviation.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, particularly Part 39 - 105, mandate specific actions concerning the airworthiness of British Aerospace BAe 125 Series Aeroplanes, specifically the Series 800A and 800B models. Section 105 requires compliance with the manufacturer's Service Bulletin (BAe SB 32-227) to address damage and cracks in the main landing gear side stay arm assemblies and torque links (Section 105(1)). The directive mandates that any aircraft complying with the original directive prior to 30 November 1990 must continue to adhere to it (Section 105(2)). This directive was subsequently amended by Amendment 1, which reinstated the original directive, effective from 23 April 1998 (Section 105(3)). The obligations imposed by the Civil Aviation Regulations 1998 on the relevant parties include ensuring that the aircraft's main landing gear side stay arm assemblies and torque links are regularly inspected and maintained to prevent any damage or cracks that could lead to landing gear failure. Operators and owners of the British Aerospace BAe 125 Series 800A and 800B aeroplanes must follow the instructions detailed in BAe SB 32-227 (Section 105(4)). This includes performing necessary repairs or replacements to meet the airworthiness standards set by the Civil Aviation Safety Authority (CASA) (Section 105(5)). Failure to comply with these provisions can result in severe consequences. Under the Civil Aviation Act 1988, non-compliance may be considered an offence. The potential penalties include substantial fines, imprisonment, or both. For corporations, the maximum penalty can reach up to $2,100,000, while individuals responsible for the oversight or management of the aircraft can face fines of up to $210,000 and imprisonment for up to five years (Section 105(6)). Furthermore, CASA has the authority to issue further directives or take action to ensure compliance, including grounding non-compliant aircraft (Section 105(7)).