AD/BAe 146/20 - Avionics Rack Earth Stud

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, encompass the Civil Aviation Safety Authority's schedule of airworthiness directives, which is essential for ensuring the safety and airworthiness of aircraft in Australia. This legislation was enacted to address the need for consistent safety standards and regulatory compliance across the aviation industry, thus preventing incidents and ensuring the safety of passengers and crew. The policy objective is to mandate actions that align with internationally recognised safety standards and to prevent potential hazards through the enforcement of specific directives, such as the one issued for the British Aerospace BAe 146 Series Aeroplanes concerning the avionics rack earth stud. This directive, AD/BAe 146/20, applies to all BAe 146 series aeroplanes and requires compliance with BAe 146 Service Bulletin 24-60, which was classified as mandatory by the UK Civil Aviation Authority due to reported chafing of an electrical loom on the earth stud. The directive mandates corrective actions to be taken before 6 November 1990, thereby ensuring that all relevant aircraft meet the necessary safety standards. The regulations are overseen by the Civil Aviation Safety Authority, which is responsible for enforcing these directives to maintain the highest safety standards within the Australian aviation sector.

Scope and Application

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, establish the scope and application of the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, which include the AD/BAe 146/20 directive concerning the avionics rack earth stud for British Aerospace BAe 146 series aeroplanes. This legislation applies to all BAe 146 series aeroplanes as detailed in the Requirement Document and mandates compliance with BAe 146 Service Bulletin 24-60. The directive requires specific action to be taken to address the identified issue of electrical loom chafing on the earth stud, a matter classified as mandatory by the UK Civil Aviation Authority (CAA). Compliance with this directive is required for all aircraft prior to 6 November 1990, ensuring that the identified safety concerns are addressed within the specified timeframe. The legislation’s jurisdictional reach is national, governed by the Commonwealth of Australia through CASA, and it extends its regulatory influence to ensure the safety and airworthiness of the specified aircraft across the country.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, Part 39 - 105, pertaining to the British Aerospace BAe 146 Series Aeroplanes, specifically address the avionics rack earth stud issue outlined in AD/BAe 146/20. Section (9/90) of this directive mandates that all BAe 146 series aeroplanes must comply with BAe 146 Service Bulletin 24-60. This requirement ensures that any identified issues, such as chafing of the electrical loom on the earth stud, are addressed as classified mandatory by the UK Civil Aviation Authority (CAA). The obligations imposed by this legislation on the parties and entities it governs are clear and precise. Operators of BAe 146 series aeroplanes must ensure that all actions specified in the BAe 146 Service Bulletin 24-60 are executed before 6 November 1990. This requirement is crucial for maintaining the airworthiness of the aircraft and ensuring compliance with international safety standards. The directive leaves no room for ambiguity, as it mandates adherence to the Service Bulletin, which is classified as mandatory by the UK CAA. Failure to comply with the provisions outlined in AD/BAe 146/20 can lead to significant consequences. Non-compliance may result in the aircraft being deemed unairworthy, potentially leading to grounding. Such actions could result in severe penalties, including fines and other civil or criminal consequences, as per the broader regulatory framework of the Civil Aviation Act 1988 and associated regulations. The exact penalties would depend on the specific breach and the discretion of the Civil Aviation Safety Authority (CASA). However, the overarching objective is to ensure that all safety directives are followed to prevent any potential hazards to aviation safety.