Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a crucial part of the regulatory framework governing civil aviation safety in the country. Specifically, Part 39 of these regulations addresses Airworthiness Directives, which are mandatory orders issued by the Civil Aviation Safety Authority (CASA) to correct an unsafe condition of an aircraft. One such directive is AD/G1159/12, which pertains to the Grumman Gulfstream G1159 and G-IV series aeroplanes. This directive was introduced to address specific safety concerns related to the wing rear beam lower cap splice attachment bolt, aiming to ensure the continued airworthiness of affected aircraft models. The policy objective is to maintain the highest safety standards in civil aviation by requiring timely inspections and modifications where necessary, thus protecting both the flying public and the aviation industry from potential hazards. AD/G1159/12 mandates that all models of the Gulfstream G1159 and G-IV series aeroplanes with specific serial numbers must undergo inspection and modification of the wing rear beam lower cap splice attachment bolt. This action is required either within 150 hours of time in service after 29 March 1974 or before 1 September 1974, whichever comes first. Compliance with this directive is overseen by CASA, ensuring that the safety directives are implemented effectively to mitigate any identified risks. The directive is based on Grumman Aircraft Service Change No. 163.3/74, which provides the technical specifications and procedures necessary for the inspection and modification process.

Scope and Application

The Civil Aviation Safety Authority (CASA) Regulations 1998, specifically within Part 39, detail a series of Airworthiness Directives (AD) that govern the maintenance and operational standards of civil aircraft within Australia. Among these, AD/G1159/12 pertains to the Gulfstream (Grumman) G1159 and G-IV series aeroplanes. This directive applies to all models with serial numbers (S/Nos.) ranging from 1 to 140 and 775. The directive mandates the inspection and modification of the wing rear beam lower cap splice attachment bolt, as documented in Grumman Aircraft Service Change No. 163.3/74, to be completed within 150 hours of time in service after 29 March 1974, or before 1 September 1974, whichever comes first. These regulations extend across the Commonwealth, ensuring uniform compliance with safety standards for these specific aircraft models.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically within Part 39 - 105, establish the safety requirements for the Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes through Airworthiness Directives (AD). The key provision is AD/G1159/12 (paragraph 1), which mandates an inspection and modification of the wing rear beam lower cap splice attachment bolt for all affected models with serial numbers (S/Nos.) 1 to 140 and 775. This directive aims to ensure the structural integrity of the aircraft and compliance must be achieved within 150 hours time in service after 29 March 1974 or before 1 September 1974, whichever occurs first (paragraph 2). The obligations imposed by this Act are primarily on the operators and owners of the specified Gulfstream models. They must ensure that the inspection and modification of the wing rear beam lower cap splice attachment bolt are conducted by certified personnel and in accordance with the guidelines outlined in Grumman Aircraft Service Change No. 163.3/74. This includes maintaining accurate records of all inspections and modifications performed, ensuring that the aircraft remains airworthy as per the Civil Aviation Safety Authority's (CASA) standards (paragraph 3). Failure to comply with the requirements set forth in AD/G1159/12 can result in significant consequences. Non-compliance may lead to enforcement actions by CASA, which can include fines, the grounding of the aircraft until the required modifications are completed, or even the suspension or revocation of the aircraft's airworthiness certificate (paragraph 4). The specific penalties for non-compliance are not detailed in the legislative instrument, but they can be severe, reflecting the critical nature of maintaining aircraft safety standards (paragraph 5).