AD/SWSA226/24 - Nose Wheel Steering - Deactivation

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, were introduced to provide comprehensive safety regulations governing civil aviation in the country. Part 39, specifically addressing Airworthiness, includes directives aimed at maintaining the highest safety standards for all aircraft types operating within Australia. One such directive, AD/SWSA226/24, focuses on the deactivation of nose wheel steering on Fairchild (Swearingen) SA226 and SA227 series aeroplanes. This directive was issued to address safety concerns associated with variable authority nose wheel steering, as highlighted in Swearingen Alert SB No. 32-012. The policy objective is to ensure the safety of these aircraft by mandating the deactivation of the nose wheel steering system within 25 hours time in service after 3 August 1977, thereby mitigating any potential risks identified.

Scope and Application

The Civil Aviation Safety Authority (CASA) has issued Airworthiness Directives under the Civil Aviation Regulations 1998, specifically within Part 39 - 105, which applies to all operators of Fairchild (Swearingen) SA226 and SA227 series aeroplanes that are fitted with variable authority nose wheel steering. These directives mandate compliance with the specified safety measures to ensure the airworthiness of these aircraft, with particular attention to the deactivation of the nose wheel steering system as outlined in Swearingen Alert SB No. 32-012. Operators must adhere to the directive by implementing the necessary actions within 25 hours of time in service after the directive was issued on 3 August 1977. The scope of this regulation is confined to the geographic and jurisdictional reach of the Commonwealth of Australia, applying nationally to all entities and persons involved in the operation of the affected aircraft models. There are no stated exclusions, exemptions, or thresholds in the directive itself; however, further interpretation and application might be detailed in subordinate instruments or guidance notes issued by CASA.

Key Provisions

The primary operative section of this legislation, AD/SWSA226/24, pertains to the deactivation of nose wheel steering on Fairchild (Swearingen) SA226 and SA227 series aeroplanes (Regulation 39.105). Specifically, the regulation requires that all models of these aircraft fitted with variable authority nose wheel steering must have this system deactivated. This directive stems from Swearingen Alert SB No. 32-012 and must be implemented within 25 hours of the aircraft accumulating time in service after 3 August 1977. The obligations imposed by this regulation are clear and straightforward. Aircraft operators and owners must ensure that the nose wheel steering system on their SA226 and SA227 aeroplanes is deactivated in accordance with the specified timeline. This involves adhering to the detailed instructions provided in the Swearingen Alert SB No. 32-012, which likely includes technical procedures for safely and effectively deactivating the steering system. Failure to comply with this requirement could potentially compromise the safety of the aircraft. There are no explicit offences or penalties mentioned in the regulation itself for failing to comply with the deactivation directive. However, non-compliance with Civil Aviation Regulations can lead to significant consequences under broader civil aviation laws. These could include enforcement actions by the Civil Aviation Safety Authority (CASA), which might range from fines to suspension or revocation of airworthiness certificates. The severity of these consequences would depend on the nature and extent of the non-compliance, but they underscore the importance of adhering to the specified safety directives. In summary, AD/SWSA226/24 mandates the deactivation of nose wheel steering systems on certain Fairchild (Swearingen) aeroplanes within a specific timeframe, requiring operators to follow detailed technical guidelines. The regulation imposes a clear obligation on aircraft owners and operators to ensure compliance, with potential serious repercussions under broader civil aviation laws for any failure to meet these safety requirements.