AD/CA25/5 - Throttle Control Grub Screw

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, address the need to ensure the safety and reliability of civil aviation in Australia. The Regulations are a comprehensive set of rules governing various aspects of aviation operations, including aircraft maintenance and airworthiness. The specific Schedule of Airworthiness Directives within Part 39, including AD/CA25/5 concerning the Skyfox Aviation (Hedaro) CA25 Series Aeroplanes, is introduced to address identified safety concerns and ensure compliance with safety standards. The policy objective of these regulations is to maintain and enhance the safety of civil aviation through rigorous oversight and adherence to prescribed standards and directives. The Airworthiness Directive AD/CA25/5 focuses on the CA25 and CA25N models of Skyfox Aviation (Hedaro) aeroplanes, specifically up to Serial No. 032. This directive aims to prevent the potential loss of positive engine control, a critical safety concern, by mandating specific actions in accordance with Skyfox Aviation Service Bulletin No. 12 dated 18 March 1996. Compliance with this directive is required prior to further flight after 31 May 1996 for Part A of the bulletin and within 100 hours time in service after 23 May 1996 for Part B. The directive underscores the importance of timely and precise maintenance actions to safeguard against critical failures in aircraft control systems.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, mandates the application of AD/CA25/5 concerning the throttle control grub screw for Skyfox Aviation (Hedaro) CA25 Series Aeroplanes. This legislative instrument applies to all models CA25 and CA25N up to Serial No. 032, necessitating compliance with Skyfox Aviation Service Bulletin No. 12 dated 18 March 1996. The directive is designed to ensure airworthiness and prevent possible loss of positive engine control. Compliance requirements are stringent, demanding adherence to Part A of SB No 12 before further flight after 31 May 1996 and Part B within 100 hours time in service after 23 May 1996. This regulation extends to all operators of the specified aircraft models within the Commonwealth of Australia, ensuring safety standards are uniformly applied across the national aviation sector.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), specifically PART 39 - 105, includes an Airworthiness Directive (AD) for Skyfox Aviation's CA25 Series aeroplanes, identified as AD/CA25/5. This directive pertains to the throttle control grub screw, aimed at preventing potential loss of positive engine control. The AD applies to CA25 and CA25N models up to Serial No. 032. According to the directive, compliance is mandatory, and the action required must align with the instructions in Skyfox Aviation Service Bulletin No. 12 dated 18 March 1996. The directive stipulates that Part A of the service bulletin must be followed before any further flight after 31 May 1996, while Part B must be completed within 100 hours of time in service following 23 May 1996. The Civil Aviation Regulations impose specific obligations on the parties involved. Aircraft operators must ensure that the necessary actions are taken in accordance with the instructions provided in Skyfox Aviation Service Bulletin No. 12. This includes addressing the throttle control grub screw issue to maintain the airworthiness of the aircraft. Additionally, the regulations require that records of compliance with these directives be maintained and made available upon request to the Civil Aviation Safety Authority (CASA). Operators must adhere to the timelines specified in the directive, ensuring that the required actions are completed within the stipulated periods to avoid compromising the safety of the aircraft. Failure to comply with the provisions of the Airworthiness Directive can result in various consequences. The regulations do not explicitly state specific offences or penalties for non-compliance in this directive, but general provisions within the Civil Aviation Act 1988 (Cth) and the Civil Aviation Regulations 1998 (Cth) apply. Non-compliance with airworthiness directives can lead to enforcement actions by CASA, including fines, legal action, and potential grounding of the aircraft until the required actions are completed. In serious cases, where non-compliance is deemed to pose a significant safety risk, operators may face more severe penalties, including revocation of operating certificates. Therefore, it is crucial for operators to adhere to the directives to avoid these potential consequences.