Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, provide a comprehensive framework for ensuring the safety and efficiency of civil aviation within Australia. Part 39 - 105 of these Regulations specifically addresses the Civil Aviation Safety Authority Schedule of Airworthiness Directives, which includes directives for specific aircraft types to ensure compliance with safety standards. One such directive, AD/GAF-N22/35, pertains to GAF N22 and N24 series aeroplanes, mandating modifications to the horizontal stabiliser trim tab system to improve durability, as referenced in GAF Service Bulletin No. NMD-55-8. This directive aims to enhance the operational safety of the specified aircraft models, ensuring that they meet the stringent safety standards set forth by the Civil Aviation Safety Authority. The modification is required for all N22, N22B, and N22S models with serial numbers referenced in Service Bulletin NMD-55-8, with compliance necessary before 1 August 1980. This legislative measure addresses a specific safety concern identified in the stabilator trim tab control system of the affected aircraft, ensuring that any potential issues are rectified to prevent any adverse impact on flight safety. The directive underscores the commitment of the Australian regulatory framework to maintaining the highest safety standards in civil aviation.

Scope and Application

The Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, specifically AD/GAF-N22/35, applies to all models of GAF N22 and N22 Series aeroplanes, namely the N22, N22B, and N22S, with serial numbers referenced in GAF Service Bulletin No. NMD-55-8. This legislation aims to ensure the airworthiness of these aircraft by mandating modifications to the horizontal stabiliser trim tab control system to enhance its durability. The directive is applicable to aircraft that were manufactured before 1 August 1980, as outlined in the 4/80 section of the regulations. This directive, which falls under the Civil Aviation Regulations 1998, is a Commonwealth regulation that applies nationally and is enforced by CASA. The regulation does not explicitly state any exclusions or exemptions, suggesting that all specified aircraft must comply with the outlined modifications. Subordinate instruments may further define or extend the application of these directives, but the primary focus remains on ensuring the safety and compliance of the specified aircraft models.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, contains the Civil Aviation Safety Authority (CASA) schedule of Airworthiness Directives (ADs). Within this section, AD/GAF-N22/35 focuses on the modification of the horizontal stabiliser trim tab system for GAF N22 and N24 series aeroplanes. This directive applies to all models N22, N22B, and N22S with serial numbers as referenced in GAF Service Bulletin (SB) NMD-55-8 (Section 1). Compliance with this directive is mandated before 1 August 1980, as stipulated in the background information provided in the directive (Section 2). The primary obligation under this Airworthiness Directive is the requirement for operators of the specified N22 series aeroplanes to modify the horizontal stabiliser trim tab control system to enhance its durability (Section 1). This modification is essential to ensure the continued airworthiness and safety of these aircraft, as outlined in the background information. Operators must adhere to the guidelines and specifications detailed in GAF Service Bulletin NMD-55-8 to complete the required modifications effectively. Failure to comply with AD/GAF-N22/35 may result in significant legal and safety implications. The directive underscores the importance of adhering to CASA's requirements to maintain the safety standards of the aircraft. Non-compliance could lead to enforcement actions, including potential penalties for breaches of civil aviation regulations. While specific penalties are not detailed in the directive, it is important to note that CASA has the authority to impose fines and other sanctions for violations of safety directives under the Civil Aviation Act 1988. These penalties could include substantial fines, operational restrictions, or even the grounding of non-compliant aircraft. Therefore, it is crucial for operators to ensure full compliance with the directive to avoid these potential consequences.