Overview

The Civil Aviation Safety Regulations 1998 (CASR 1998) form part of a comprehensive regulatory framework designed to ensure the safety of civil aviation in Australia. Enacted by the Australian Parliament, these regulations address critical safety issues in civil aviation, including the maintenance and airworthiness of aircraft. One particular Airworthiness Directive issued under this regulatory framework is the AD/750XL/1, which targets the Pacific Aerospace 750XL Series Aeroplanes. This directive was introduced to address the problem of loose rivets securing the threaded inserts in the aileron and elevator control pushrods, which could potentially lead to unsafe conditions. The directive mandates specific inspections and corrective actions to ensure the continued airworthiness of the affected aircraft, reflecting the overarching policy objective of maintaining the highest safety standards in Australian civil aviation.

Scope and Application

The Civil Aviation Safety Regulations 1998, under the authority of the Civil Aviation Safety Authority (CASA), mandate specific safety requirements for aircraft and aeronautical products within the Australian jurisdiction. One such regulation, AD/750XL/1, pertains to the Pacific Aerospace 750XL Series Aeroplanes, specifically those with serial numbers up to and including 107. The directive requires inspections and corrective actions to address the potential unsafe condition of loose rivets in the aileron and elevator pushrod ends. This requirement must be fulfilled within a specified timeline, with initial inspections and actions required within 10 hours of the directive's effective date, 28 June 2004, and subsequent inspections mandated at intervals not exceeding 150 hours of service time. The directive also necessitates the replacement of affected rivets and the replacement of all aileron and elevator pushrod insert rivets, as per the instructions outlined in the Pacific Aerospace Mandatory Service Bulletin (MSB) PACSB/XL/007. The AD becomes enforceable upon its notification in the Commonwealth of Australia Gazette on the effective date.

Key Provisions

The Civil Aviation Safety Regulations 1998, under Part 39 - 105, specifically mandates an Airworthiness Directive (AD) concerning the Pacific Aerospace 750XL Series Aeroplanes. This directive, AD/750XL/1, pertains to the aileron and elevator pushrods, and it requires specific actions to address identified safety concerns. The directive applies to Model 750XL aircraft with serial numbers up to and including 107. The directive requires two main actions to be taken. Firstly, operators must inspect the aileron and elevator pushrod ends in accordance with Pacific Aerospace's Mandatory Service Bulletin (MSB) PACSB/XL/007. If any detectable play between the pushrod and the insert is found, the affected rivets must be replaced before further flight, again following MSB PACSB/XL/007. Secondly, the aileron and elevator pushrod insert rivets must be replaced entirely, in line with the same service bulletin. The replacement of these rivets serves as terminating action for further inspection of the affected insert. The obligations imposed by this directive are clear and precise. Aircraft operators must ensure that the inspections and necessary replacements are conducted within the specified timeframes. The first action must be completed within 10 hours of time in service after 28 June 2004, and subsequent inspections must not exceed intervals of 150 hours of time in service until the affected rivets are replaced. The second action, the replacement of all rivets, must be completed within 600 hours of time in service after the same date. Failure to comply with these requirements may result in serious safety implications. Non-compliance with this Airworthiness Directive can lead to significant consequences. The directive imposes civil and potentially criminal penalties for breaches. While the specific penalties are not detailed within the text, regulatory breaches under the Civil Aviation Safety Regulations 1998 generally attract substantial fines and other sanctions. The seriousness of these consequences underscores the importance of adhering to the stipulated timeframes and procedures for maintaining the airworthiness of the affected aircraft.