AD/BAe 146/11 - Main Landing Gear - Main Fitting

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Legislation au F2006B03462 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


British Aerospace BAe 146 Series Aeroplanes

 

AD/BAe 146/11 Main Landing Gear - Main Fitting 2/89

Applicability: All models.

 

Requirement: Action in accordance with British Aerospace BAe 146 Service Bulletin 32-73.

 

Compliance: Prior to the main landing gear accumulating 12000 landings or within 1000 landings after 1 March 1989, whichever occurs later.

 

Background:  Fatigue and material defects may be present on the main fitting and on the barrel section of the main fitting. Fatigue and static strength testing has shown that this condition, if not corrected, could lead to collapse of the main landing gear.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, specifically within Part 39 - 105, establish a schedule of airworthiness directives aimed at ensuring the safety of civil aviation operations in Australia. One such directive, AD/BAe 146/11, addresses the British Aerospace BAe 146 Series Aeroplanes, focusing on the main landing gear main fitting. This directive was introduced to mitigate the risk of fatigue and material defects that could potentially lead to the collapse of the main landing gear, a critical safety concern. Compliance with the directive requires adherence to British Aerospace BAe 146 Service Bulletin 32-73, with actions mandated prior to the main landing gear accumulating 12,000 landings or within 1,000 landings after 1 March 1989, whichever occurs later. This legislative instrument was enacted by the Commonwealth of Australia through the Civil Aviation Regulations 1998, which are administered by the Civil Aviation Safety Authority (CASA), with the overarching policy objective of enhancing aviation safety standards and protecting the public from aviation-related hazards.

Scope and Application

The Civil Aviation Regulations 1998, as part of the legislative framework overseen by the Civil Aviation Safety Authority, encompass a comprehensive regime designed to ensure the safety and airworthiness of aircraft operating within Australia's jurisdiction. Specifically, Part 39 - 105, which pertains to the Schedule of Airworthiness Directives, sets forth mandatory safety requirements that must be adhered to by all entities operating British Aerospace BAe 146 Series Aeroplanes. This legislation applies universally to all models within this aircraft series, thereby ensuring a standardised approach to safety across the fleet. The directive, AD/BAe 146/11, mandates that action must be taken in accordance with British Aerospace BAe 146 Service Bulletin 32-73, focusing on the main landing gear and its main fitting. The requirement stipulates that corrective measures must be implemented either before the main landing gear accumulates 12,000 landings or within 1,000 landings after 1 March 1989, whichever condition is met later. This directive is crucial in preventing potential collapse of the main landing gear due to fatigue and material defects identified in the main fitting and barrel section.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, address the airworthiness directives for the British Aerospace BAe 146 series aeroplanes. Under this section, Airworthiness Directive AD/BAe 146/11 pertains to the main landing gear, particularly the main fitting. Section (1) outlines the requirement for compliance with British Aerospace BAe 146 Service Bulletin 32-73. This directive is mandatory for all models of the BAe 146 series aeroplanes. The requirement is that action must be taken in accordance with the specified service bulletin. This directive is designed to address potential safety issues related to the main fitting and the barrel section of the main fitting, which may suffer from fatigue and material defects. The underlying concern is that these issues could lead to the collapse of the main landing gear if left unaddressed. To ensure the continued airworthiness and safety of the aircraft, the directive mandates that corrective action must be taken before the main landing gear accumulates 12,000 landings or within 1,000 landings after 1 March 1989, whichever occurs later. This timeframe ensures that all BAe 146 aeroplanes are inspected and maintained according to the latest safety standards. The obligations imposed by this directive are clear and specific. Operators and owners of BAe 146 series aeroplanes must follow the guidelines set forth in British Aerospace BAe 146 Service Bulletin 32-73. This includes conducting necessary inspections and repairs to the main landing gear to prevent any potential collapse. Failure to comply with these obligations could result in the aircraft being deemed unairworthy, leading to potential grounding and significant operational disruptions. Non-compliance with the provisions of this airworthiness directive can result in serious consequences. Under the Civil Aviation Regulations, violations may lead to enforcement actions by the Civil Aviation Safety Authority (CASA). The penalties for non-compliance can be severe, including fines and potential prosecution under civil or criminal law. The exact penalties depend on the nature and severity of the breach, but they underscore the importance of adhering to the directive to maintain the safety and airworthiness of the aircraft.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.