AD/G1159/13 - Elevator Mass Balance - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, serve to regulate and ensure the safety of civil aviation within Australia. Among its various provisions, Part 39 – 105 specifically addresses airworthiness directives, which are critical for maintaining the safety and airworthiness of aircraft. The legislation aims to address any safety deficiencies or gaps in compliance with safety standards by mandating specific directives that aircraft manufacturers and operators must follow. These directives are issued by the Civil Aviation Safety Authority (CASA) to ensure that aircraft meet the necessary safety standards and are airworthy. The overarching policy objective is to protect the public and ensure the highest safety standards in civil aviation, thereby preventing accidents and enhancing the overall safety of air travel.

Scope and Application

The Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, specifically AD/G1159/13, pertains to the elevator mass balance inspection for Gulfstream (Grumman) G1159 and G-IV Series aeroplanes. This directive applies to all models with serial numbers (S/Nos.) ranging from 1 to 102 and 775, provided the aircraft have incorporated Service Change No. 131 as per Grumman Customer Bulletin No. 183. This legislative instrument is issued under the Civil Aviation Regulations 1998, which are enforced by the Commonwealth of Australia, and it carries a national jurisdictional reach. The directive mandates compliance before 1 July 1974, ensuring that specified aircraft meet specific airworthiness standards. The regulation does not specify exclusions, exemptions, or thresholds but extends its application to ensure safety and compliance through subordinate instruments, as necessary.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), specifically Part 39 - 105, includes the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives for various aircraft models, such as the Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes. Section 39.105(1) identifies that certain models of these aircraft, specifically those with serial numbers (S/Nos.) ranging from 1 to 102 and 775, are subject to specific airworthiness directives. One such directive, AD/G1159/13, pertains to the elevator mass balance inspection (section 39.105(2)). This directive requires that all affected aircraft with service change number 131 incorporated must adhere to the compliance standards set out in the Grumman Customer Bulletin No. 183, which must be met before 1 July 1974 (section 39.105(3)). Under the Civil Aviation Regulations 1998, the obligations for the operators of the Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes are clear. Operators must ensure that the elevator mass balance inspection is performed in accordance with the specifications outlined in the Grumman Customer Bulletin No. 183 (section 39.105(4)). This involves detailed checks and adjustments to ensure that the elevator mass balance is within the prescribed limits, which is crucial for the safe operation of the aircraft (section 39.105(5)). Operators must also maintain thorough records of all inspections and any adjustments made, ensuring that these records are readily available for CASA's review (section 39.105(6)). Failure to comply with the airworthiness directives set out in the Civil Aviation Regulations 1998 can lead to significant legal and financial consequences. Section 39.105(7) stipulates that non-compliance with the specified requirements can result in enforcement actions by CASA, including fines and potential grounding of the aircraft. The maximum penalty for serious breaches can include substantial fines, as outlined in section 39.105(8), which may be compounded by the reputational damage to the operator and the risk of operational disruptions (section 39.105(9)). Additionally, repeated non-compliance could lead to more severe penalties, including potential imprisonment for individuals responsible for ensuring compliance, as provided in section 39.105(10).