Overview

The Civil Aviation Regulations 1998, as amended, were enacted to ensure the safety of civil aviation in Australia. The legislation, administered by the Civil Aviation Safety Authority (CASA), includes various parts and schedules addressing different aspects of airworthiness, maintenance, and operational standards. One such regulation is found in Part 39, specifically Schedule 105, which pertains to Airworthiness Directives. This legislative instrument, F2006B01860, was introduced to address specific safety concerns related to certain models of Airbus aircraft. The problem it was designed to resolve was the potential for erroneous radar altimeter data, which could compromise flight safety. By issuing an Airworthiness Directive (AD) for the Airbus Industrie A319, A320 and A321 series aeroplanes, CASA mandates specific corrective actions to ensure the safe operation of these aircraft. The policy objective behind this directive is to prevent unsafe conditions that could arise from software anomalies in the Flight Warning Computers, thus maintaining the highest standards of aviation safety.

Scope and Application

The Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 applies specifically to Airbus Industrie A319, A320, and A321 series aeroplanes that do not have Airbus Industrie Modification 26017 incorporated during production or Airbus Industrie Service Bulletin (SB) A320-31-1106 embodied post production. The directive mandates the replacement of both Flight Warning Computers (FWC) in accordance with SB A320-31-1106. Alternatively, the installation of a FWC standard E3+ in accordance with SB A320-31-1141 is considered an acceptable method of compliance for this directive. This requirement must be met before 31 March 2002, with the directive becoming effective from 5 October 2000. This AD is a legislative instrument under the authority of the Civil Aviation Safety Authority, extending its jurisdictional reach throughout the Commonwealth of Australia and ensuring that all relevant aircraft meet the specified safety standards to mitigate the risk of erroneous aircraft position information that could lead to inadequate warnings.

Key Provisions

The key operative sections of this Airworthiness Directive (AD) specify the requirements and compliance timeframes for the A319, A320, and A321 series aeroplanes. Section 10/2000 outlines the applicability of the AD, which is targeted at the mentioned aircraft models unless they have incorporated specific modifications or service bulletins. The requirement section mandates the replacement of both Flight Warning Computers (FWC) in accordance with Service Bulletin A320-31-1106, or alternatively, the installation of a FWC standard E3+ in accordance with Service Bulletin A320-31-1141. This ensures that the potential software anomalies in the FWCs are rectified, thereby preventing erroneous aircraft position information and lack of warning. Compliance with this directive must be achieved before 31 March 2002, as stipulated in the compliance section, with the directive becoming effective from 5 October 2000. This Act imposes specific obligations on the operators of the affected aircraft. Operators must ensure that the FWCs are either replaced as per the directive or that a compliant FWC standard E3+ is installed. This action must be completed within the stipulated timeframe to maintain the airworthiness of the aircraft. Operators are also required to follow the instructions provided in the applicable service bulletins to correctly perform the required modifications. Failure to adhere to these requirements may result in the aircraft being deemed unairworthy, which could lead to grounding and operational disruptions. Breach of the provisions of this Airworthiness Directive can lead to serious consequences. While specific penalties are not detailed in the AD, non-compliance can result in enforcement actions by the Civil Aviation Safety Authority (CASA). Such actions may include fines, legal proceedings, and potential grounding of the aircraft until the required actions are undertaken. In the most severe cases, continued operation of non-compliant aircraft could lead to criminal charges against responsible individuals or entities, resulting in substantial financial penalties and reputational damage. Ensuring adherence to the AD is therefore critical for maintaining the safety and regulatory compliance of the aircraft.