AD/GAF-N22/9 - Fuel System Check Valves - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a comprehensive legislative framework governing aviation safety, among other matters. Part 39, specifically, pertains to airworthiness directives, ensuring that aircraft meet the necessary safety standards. One such directive, AD/GAF-N22/9, was introduced to address the problem of fuel system check valves in GAF N22 and N24 series aeroplanes. This directive was implemented to rectify an issue identified in the fuel system check valves, ensuring that these aeroplanes maintain safe operational standards. The policy objective of this legislative instrument is to enhance the safety and reliability of civil aviation by mandating specific modifications and compliance timelines for affected aircraft. The Civil Aviation (Safety) Regulations 1998, as amended by the legislative instrument F2006B10226, further refine the requirements set forth in the primary regulations. This particular legislative instrument targets the GAF N22 and N24 series aeroplanes, mandating that specific models with serial numbers within the defined range must comply with the fuel system check valve modifications outlined in GAF Service Bulletin No. N22.28.2. The directive requires compliance within 100 hours of time in service after the specified date, ensuring that the safety directive is implemented promptly and effectively.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, encompasses the Australian Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, including AD/GAF-N22/9 concerning the modification of fuel system check valves for GAF N22 and N24 series aeroplanes. This legislation applies to the specific model N22 with serial numbers ranging from N22-3 to N22-9 and N22-11 to N22-14. The directive mandates compliance within 100 hours of time in service after 16 April 1976. The regulation is applicable to aircraft operators, maintenance personnel, and any entities responsible for ensuring that the specified modifications are implemented. CASA, as the regulatory body, oversees the enforcement of these directives to maintain airworthiness standards across the Commonwealth of Australia. The scope of this Act is national, ensuring uniform safety standards throughout the country, with no stated exclusions or exemptions for the specified aircraft models and serial numbers. The application of these regulations may be further defined or extended through subordinate instruments issued by CASA.

Key Provisions

The key operative sections of the Civil Aviation Regulations 1998, specifically in Part 39, focus on ensuring the airworthiness of aircraft, with Section 105 detailing the authority of the Civil Aviation Safety Authority (CASA) to issue Airworthiness Directives (ADs). In the context of the N22 and N24 Series Aeroplanes, AD/GAF-N22/9 addresses fuel system check valves and mandates their modification. The applicability of this directive is clearly outlined for specific model N22 aircraft, namely those with serial numbers ranging from N22-3 to N22-9 and N22-11 to N22-14. Compliance with these requirements must occur within 100 hours of the aircraft's time in service after the directive was issued on 16 April 1976, as specified in GAF SB No. N22.28.2. The obligations imposed by this legislation on the parties and entities it governs are stringent. Operators of the specified aircraft must ensure that the modifications to the fuel system check valves are performed in accordance with the instructions provided in GAF SB No. N22.28.2. This involves a detailed inspection and, if necessary, the replacement of the check valves to meet the safety standards set by CASA. Operators are also required to maintain accurate records of the modifications carried out and the dates on which these were performed, which may be subject to audit by CASA. Failure to comply with the Airworthiness Directives can result in serious consequences. Under Section 91-1 of the Civil Aviation Act 1988, non-compliance may be considered an offence, leading to potential prosecution. The penalties for such offences can be severe, including substantial fines and, in some cases, imprisonment. For civil aviation safety-related offences, the maximum penalty can reach up to $200,000 for corporations and $40,000 for individuals, reflecting the gravity of ensuring air safety. These stringent measures underscore the importance of adhering to the directives to maintain the safety and integrity of air operations.