Overview

The Civil Aviation Safety Regulations 1998 (CASR 1998) were enacted to regulate the safety of civil aviation and aeronautical products in Australia. One component of this regulation is the issuance of Airworthiness Directives (ADs) by the Civil Aviation Safety Authority (CASA). The AD/A330/36, issued on 9 September 2004, is an example of such a directive aimed at addressing the safety issues associated with the main landing gear wheel axles of Airbus Industrie A330 Series aeroplanes. The directive was introduced following a report of an in-service fracture of a main landing gear axle on an A340-300 aircraft, which highlighted the risks of overheat damage to the axle base metal due to abusive grinding during original manufacture. The AD requires corrective action to be taken by the aircraft operators to ensure that the specified main landing gear axles meet the safety standards set by the French Civil Aviation Authority (DGAC) as outlined in AD F-2004-100. The policy objective behind this directive is to mitigate the risk of in-service failures and ensure the continued airworthiness of the affected aircraft models.

Scope and Application

The Civil Aviation Safety Regulations 1998, specifically Part 39 - 105, mandates the issuance of Airworthiness Directives by a delegate of the Civil Aviation Safety Authority (CASA) to address identified safety issues with aircraft or aeronautical products. This legislation applies to all Model A330-200 and -300 Airbus Industrie aircraft equipped with specific main landing gear axles, whether manufactured before or after 20 December 1994 and subsequently overhauled or repaired. The directive requires adherence to the requirements of DGAC AD F-2004-100, with compliance timeframes outlined in the directive itself. This AD was issued following a report of an in-service fracture of a wheel axle due to overheat damage caused by abusive grinding during original manufacture, highlighting the importance of stringent safety measures. The Airworthiness Directive becomes effective on 2 September 2004 and is published in the Commonwealth of Australia Gazette on 11 August 2004.

Key Provisions

The key operative sections of the Airworthiness Directive (AD) are found in the applicability, requirement, and compliance sections. The applicability section specifies which aircraft are subject to the AD: all Model A330-200 and -300 aircraft equipped with specific main landing gear axle parts numbers that were either manufactured before 20 December 1994 or were manufactured after this date but subsequently overhauled or repaired with chrome journals reworked by stripping, application and grinding (section 2). The requirement section outlines the necessary action to be taken in accordance with the instructions of DGAC AD F-2004-100, referencing Airbus All Operator Telex AOT A330-32A3176 R1 for further details (section 3). The compliance section mandates that the specified action be completed by the date mentioned in the requirement document (section 4). The obligations imposed by the AD include the requirement for aircraft owners and operators to ensure that any affected aircraft meet the specified requirements for the main landing gear wheel axles. This involves either inspecting the axles for the specified part numbers and manufacturing dates or performing the necessary corrective actions as directed by DGAC AD F-2004-100. Operators must also ensure that any overhaul or repair work done on the axles complies with the AD, particularly if chrome journals are stripped, applied, and ground. Failure to comply with the AD may result in civil or criminal consequences, although specific penalties are not detailed in the AD itself. Under the Civil Aviation Act 1988, non-compliance with an AD can lead to penalties, including fines and imprisonment. The exact penalties would depend on the specific circumstances and the discretion of the court. In addition, non-compliance could result in the grounding of affected aircraft, which could have significant operational and financial implications for the operator.