AD/A330/7 Amdt 2 - THSA Transfer Tube

Overview

The Civil Aviation Safety Regulations 1998 (CASR) were enacted to ensure the safety of civil aviation in Australia. They were introduced by the Australian Government to provide a comprehensive regulatory framework for the operation of aircraft and aeronautical products, thereby addressing gaps in safety oversight and ensuring compliance with international standards. This legislation is administered by the Civil Aviation Safety Authority (CASA), which has the responsibility to issue airworthiness directives (AD) to address identified safety issues. The policy objective is to maintain the highest possible level of safety in civil aviation by mandating specific actions to correct unsafe conditions. One such example is the Airworthiness Directive AD/A330/7 Amdt 2 concerning the Airbus A330 series aeroplanes, which aims to rectify an unsafe condition related to transfer tube disconnections from the Trimmable Horizontal Stabiliser Actuator (THSA) due to water ingress and freezing. This amendment was introduced to extend the directive's applicability to new aircraft models, thereby enhancing the safety of the aviation fleet.

Scope and Application

The Civil Aviation Safety Regulations 1998, specifically under Part 39 - 105, establish Airworthiness Directives (ADs) to ensure the safety of civil aviation within Australia. This particular AD applies to Airbus Industrie A330 series aeroplanes, including all models and serial numbers, mandating initial and repetitive inspections and modifications concerning the THSA transfer tube. The requirement necessitates adherence to the detailed inspection and maintenance procedures outlined in DGAC AD 2002-414(B) R3, which was approved by EASA. Compliance with this directive must be met from the original effective date of 26 December 2002, with the current amendment becoming effective on 28 October 2004. This AD is enforced by the Civil Aviation Safety Authority delegate, ensuring that all specified aircraft undergo the necessary inspections and modifications to rectify the identified unsafe condition due to transfer tube disconnections resulting from water ingress and freezing.

Key Provisions

The Civil Aviation Safety Regulations 1998, Part 39 - 105, issued by the Civil Aviation Safety Authority (CASA), includes an airworthiness directive (AD) concerning the Airbus A330 Series Aeroplanes (section 3). This directive mandates specific actions to be taken in relation to the aircraft or aeronautical products mentioned in the applicability section of the AD (section 4). The directive is intended to correct an unsafe condition related to the transfer tube disconnection from the ball-nut of the Trimmable Horizontal Stabiliser Actuator (THSA) due to water ingress and subsequent freezing (section 5). The requirements outlined in this directive include carrying out initial and repetitive inspections and modifications as detailed in DGAC AD 2002-414(B) R3 (section 6). The directive also includes a compliance section which specifies that these actions must be taken from the effective date of the original issue of the directive, being 26 December 2002 (section 7). The AD was amended on 28 October 2004 to include new aircraft models in its applicability (section 8). The obligations imposed by this directive on the parties or entities it governs include ensuring that the specified inspections and modifications are carried out on the applicable Airbus A330 aircraft models. This involves adhering to the detailed instructions provided in DGAC AD 2002-414(B) R3 and ensuring that these actions are completed in a timely manner as per the compliance section of the directive (section 7). Operators and maintainers of the affected aircraft are responsible for ensuring that the necessary inspections and modifications are performed by qualified personnel and documented accordingly to maintain the airworthiness of the aircraft. Failure to comply with the requirements of this airworthiness directive may result in civil or criminal penalties. The severity of the penalties depends on the nature and extent of the non-compliance. In cases of significant non-compliance, the penalties could include fines, imprisonment, or both. The exact penalties are not specified in the directive but are subject to the provisions of the Civil Aviation Act 1988 and other relevant legislation. The potential consequences underscore the importance of adhering to the directive to ensure the safety and airworthiness of the affected aircraft.