AD/GAF-N22/24 - Audio System Modification

Overview

The Civil Aviation Regulations 1998, under the authority of the Civil Aviation Act 1988, govern the safety and operational standards for civil aviation in Australia. This particular legislative instrument, F2006B10171, pertains to Part 39 - 105, which deals with the Civil Aviation Safety Authority's Schedule of Airworthiness Directives. Specifically, it addresses the audio system modification for GAF N22 and N24 Series aeroplanes, identified as AD/GAF-N22/24. The directive was introduced to ensure the safety of N22 and N22B aircraft fitted with Customer option G50, provided they have not been modified to the Nomad Mod. N97 standard. Compliance with this directive is mandatory, requiring adherence to the GAF SB NMD-23-1 document or an approved alternative, within 100 hours of time in service following 30 November 1978. The objective is to mitigate potential safety risks associated with the audio systems in these aircraft, thereby enhancing overall aviation safety in Australia.

Scope and Application

The Civil Aviation Safety Authority’s (CASA) Airworthiness Directive (AD) AD/GAF-N22/24, which applies to all N22 and N22B aircraft fitted with Customer option G50 and not modified to Nomad Mod. N97 standard, mandates an audio system modification to ensure continued compliance with airworthiness standards. This directive is applicable across the Commonwealth of Australia and is enforced by CASA. Compliance with the AD must be achieved within 100 hours time in service after the directive's issuance date of 30 November 1978, and the modifications must be carried out in accordance with GAF SB NMD-23-1 or an alternative modification approved by the Secretary. This AD does not explicitly state any exclusions or exemptions, and its application is specifically tailored to the mentioned aircraft models and configurations.

Key Provisions

The Civil Aviation Regulations 1998, specifically in Part 39 - 105, mandate the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for certain aircraft models. One such directive, AD/GAF-N22/24, pertains to the audio system modification for GAF N22 and N22B series aeroplanes (section 11/78). This directive applies to all N22 and N22B aircraft equipped with the Customer option G50 that have not yet been modified to the Nomad Mod. N97 standard. The directive requires that the modification must be carried out in accordance with GAF SB NMD-23-1 or an alternative modification approved by the Secretary. Compliance with this directive is mandatory within 100 hours of time in service after 30 November 1978. The obligations imposed by this directive are clear and specific. Owners and operators of the affected aircraft must ensure that the audio system modification is completed as per the stipulated guidelines. This includes either following the GAF SB NMD-23-1 document or an alternative method that has received approval from the Secretary. The directive underscores the importance of maintaining the aircraft's airworthiness by implementing these modifications to ensure safety and compliance with aviation standards. Failure to comply with AD/GAF-N22/24 can result in significant consequences. Regulatory enforcement actions may be taken against the aircraft owner or operator if the modification is not completed within the specified timeframe. The penalties for non-compliance can include fines, enforcement notices, or even the grounding of the aircraft until the required modifications are completed. In severe cases, CASA may pursue legal action, leading to criminal charges and further penalties. It is crucial for aircraft owners and operators to adhere strictly to the directive to avoid these repercussions and ensure the continued airworthiness of their aircraft.