AD/MSR/2 - Tab Control Pinion on Shaft - Modification

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA) under the authority of the Commonwealth of Australia, establish comprehensive regulations for ensuring the safety of civil aviation in Australia. The regulations, which include specific airworthiness directives, are intended to address identified safety issues and ensure that aircraft and aviation personnel meet safety standards. One such directive, AD/MSR/2, focuses on the modification of the tab control pinion on the shaft of Aerospatiale Rallye Series aeroplanes, specifically those with certain serial numbers. This directive aims to rectify potential safety concerns and ensure the continued airworthiness of these aircraft, thereby protecting passengers and crew. The policy objective of these regulations is to maintain and enhance the safety of civil aviation through stringent airworthiness standards. By mandating specific modifications, such as the one outlined in AD/MSR/2, CASA seeks to proactively address and mitigate any potential safety risks associated with the specified aeroplanes. The requirement for immediate compliance underscores the importance of these safety measures and the commitment of the regulatory body to uphold the highest standards of aviation safety in Australia.

Scope and Application

The Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998 applies specific airworthiness directives to ensure the safety and reliability of aircraft operations across Australia. Part 39, specifically section 105, addresses Airworthiness Directives for various aircraft models, with a particular focus on Aerospatiale Rallye Series Aeroplanes. This directive mandates the modification of the Tab Control Pinion on Shaft for specific serial numbers of these aircraft, as detailed in the document, either Rallye SB No. 4 or MS Mod. No. 14. The requirement is that these modifications must be completed forthwith, underscoring the urgency and importance of compliance to maintain the safety standards set by CASA. The geographic scope of this regulation is national, applying to all Aerospatiale Rallye Series Aeroplanes operating within Australia, irrespective of the operator or intended flight path. The application of this legislation is comprehensive, targeting specific aircraft models within the Aerospatiale Rallye Series, identified by their serial numbers. The directive is designed to address potential safety issues by mandating immediate modifications to ensure the continued airworthiness of the specified aircraft. CASA’s regulatory authority extends to all operators and owners of these aircraft, ensuring that the modifications are implemented without delay. The directive does not specify any exclusions or exemptions, indicating that all affected aircraft must comply with the directive. Additionally, the application of this directive may be further detailed or extended through subordinate instruments issued by CASA, ensuring that all relevant safety concerns are adequately addressed.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, detail the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives. Within this schedule, AD/MSR/2 pertains to the modification of the tab control pinion on the shaft for Aerospatiale Rallye Series Aeroplanes (sections 8/62). This directive applies to all models with specific serial numbers (S/Nos. 1 to 5, 8, 9, 11, 19, 20, 26, 27, 31, 42, 43, 46, 50, 53, 54, 56, 57, 59 to 62, 64 to 69, 71 to 74). The directive mandates compliance with either Rallye SB No. 4 or MS Mod. No. 14, and the modification must be undertaken forthwith. The obligations imposed by this directive are clear and straightforward. Owners and operators of the specified Aerospatiale Rallye Series Aeroplanes must ensure that the tab control pinion on the shaft is modified according to the specified service bulletins or modifications. This requirement aims to address a specific safety concern that has been identified through ongoing monitoring and assessment by CASA. By mandating compliance with Rallye SB No. 4 or MS Mod. No. 14, the directive ensures that the necessary safety improvements are implemented uniformly across the affected fleet. Failure to comply with the AD/MSR/2 directive can result in significant consequences. Civil aviation regulations are stringent, and non-compliance with an Airworthiness Directive can lead to severe penalties. Specifically, if an operator fails to adhere to the directive, CASA may take enforcement actions, including the possibility of grounding the aircraft until the required modifications are completed. In more serious cases, CASA can also impose fines and other penalties on the operators, which can be substantial given the critical nature of aviation safety. The exact penalties are not specified in the provided text, but they are designed to enforce compliance and ensure the safety of all passengers and crew. It is important to note that the directive requires immediate action, as indicated by the term "forthwith." This urgency underscores the importance of the modification to the tab control pinion on the shaft and the potential safety risks associated with non-compliance. Operators must act promptly to review their aircraft, identify those within the specified serial numbers, and implement the necessary modifications as outlined in the directive. By doing so, they ensure that their operations remain compliant with CASA's stringent safety standards and avoid the potential legal and financial repercussions of non-compliance.