AD/IAI-W/17 Amdt 1 - Aileron Push Pull Tube and Guide Rollers

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Government, form a comprehensive regulatory framework aimed at ensuring the safety and efficiency of civil aviation within Australia. This legislative instrument, which includes the Airworthiness Directives such as AD/IAI-W/17, targets specific safety issues and mandates corrective actions to maintain airworthiness standards. The directive concerning the Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes, as amended, was introduced to address the issue of excessive wear on the aileron push pull tube, a critical component in aircraft control systems. This problem, if left unaddressed, could result in uneven control wheel movement and potential perforation of the control tube, thereby compromising flight safety. The directive sets forth compliance requirements and inspection intervals, with the primary objective of preventing such safety hazards and ensuring the continued airworthiness of the affected aircraft models.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 105, governs the safety standards and operational protocols for aircraft within Australia, ensuring compliance with airworthiness directives issued by the Civil Aviation Safety Authority (CASA). This particular legislation applies to Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes, specifically models 1124 and 1124A, which must adhere to the requirements outlined in IAI Service Bulletin No. 1124-27-129. This involves addressing excessive wear on the aileron push-pull tube and its guide rollers to prevent potential issues such as uneven control wheel movement and perforation of the control tube. Compliance with these directives is mandatory for all aircraft of the specified models, regardless of the operator, and must be carried out within 50 hours of time in service after 07 June 1995, with subsequent inspections to occur at intervals not exceeding 800 hours time in service. The legislation applies nationally across Australia, reflecting the Commonwealth's jurisdiction over civil aviation safety. There are no stated exclusions or exemptions within the scope of this directive, and its application can be further detailed through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, Section 105, includes detailed provisions for the maintenance and safety of aircraft, as exemplified by the Airworthiness Directives concerning the Israel Aircraft Industries (IAI) 1123 and 1124 (Westwind) Series Aeroplanes (AD/IAI-W/17). These directives, applicable to Models 1124 and 1124A across all serial numbers, mandate that action be taken in accordance with IAI Service Bulletin No. 1124-27-129 (Section 1). This action is critical to address the issue of excessive wear on the aileron push pull tube, which can lead to uneven control wheel movement and potential perforation of the control tube. The requirement for compliance is outlined in the directive, stating that the necessary action must be taken within 50 hours of time in service following 7 June 1995, with subsequent inspections occurring at intervals not exceeding 800 hours of time in service (Section 2). This directive was amended on 10 October 1996 to extend the periodicity of inspections to align with the "C" check (Section 3). The obligations imposed by this legislation on the operators of IAI 1124 and 1124A aircraft are significant. Operators must adhere to the prescribed maintenance schedules and ensure that the specified actions are carried out in accordance with the service bulletin mentioned. This involves detailed inspections and necessary repairs or replacements of the aileron push pull tube and guide rollers to prevent the identified wear and subsequent risks. Operators are also required to keep accurate records of all actions taken to demonstrate compliance with the directive. Additionally, the operators must ensure that all personnel involved in the maintenance and inspection processes are adequately trained and qualified to perform these tasks. Failure to comply with the requirements of this Airworthiness Directive can result in serious consequences. The Civil Aviation Regulations provide for both civil and criminal penalties for non-compliance. Civil penalties can include fines and the possibility of enforcement actions by the Civil Aviation Safety Authority (CASA). Criminal penalties may be imposed for more severe breaches, with the potential for substantial fines and imprisonment. The exact penalties are determined by the severity of the breach and the discretion of the court, but the potential for significant financial and legal repercussions underscores the importance of strict compliance with the directive. The regulations ensure that all parties involved in the operation and maintenance of these aircraft take the necessary steps to uphold the highest standards of aviation safety.