AD/CHA/18 - Airspeed Restriction - Front Wing Strut

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, form a comprehensive set of rules governing civil aviation safety in Australia. Part 39 of these regulations, specifically 105, focuses on airworthiness directives, which are legally enforceable rules relating to the design, production, maintenance, and operation of aircraft to ensure their continued airworthiness. This part of the legislation was introduced to address the need for consistent and stringent safety standards in the aviation industry, ensuring that aircraft meet necessary safety benchmarks to protect passengers, crew, and the public. The policy objective is to maintain and enhance the safety and efficiency of civil aviation by setting clear, enforceable standards and requirements for aircraft and aviation operations. A pertinent legislative instrument under this framework is AD/CHA/18, which pertains to airspeed restrictions on front wing struts for American Champion (Aeronca, Bellanca) series aeroplanes. This directive applies to specific models and serial numbers of these aircraft and mandates compliance with Bellanca Service Letter No. C-127. The requirement is aimed at addressing safety concerns associated with the front wing struts of these aeroplanes, ensuring they operate within specified limits to prevent structural failure or other safety issues. The compliance with this directive is monitored to ensure adherence to the stipulated safety standards, reflecting the broader policy objective of maintaining high safety standards in Australian civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority, includes a schedule of airworthiness directives that applies to certain American Champion (Aeronca, Bellanca) Series Aeroplanes, particularly those identified by specific model and serial numbers. The directive AD/CHA/18 pertains to an airspeed restriction on the front wing strut for these aircraft. The applicability extends to models 7ECA, 7GC, 7GCA, 7GCAA, 7GCB, and 7GCBC, as well as model 7HC and 7KCAB, with certain serial numbers excluded, such as those with specific front wing strut parts numbers. The directive mandates compliance with Bellanca SL No. C-127, referencing FAA AD 77-20-05, Amendment 39-3069, and requires action in accordance with the specified Requirement Document. The geographic and jurisdictional reach of this legislation is national, governed by the Commonwealth of Australia and enforced by the Civil Aviation Safety Authority, ensuring compliance across all relevant aircraft within its territory.

Key Provisions

The key operative sections of the Civil Aviation Regulations 1998, specifically Part 39 - 105, pertain to the airworthiness directives issued by the Civil Aviation Safety Authority (CASA) for certain American Champion (Aeronca, Bellanca) series aeroplanes. The relevant section here is AD/CHA/18 (1), which deals with the airspeed restriction concerning the front wing strut of specified models. This directive applies to various models and serial numbers of the Champion series aeroplanes, notably excluding certain serial numbers and model types with specific front wing struts (1). Under these regulations, the primary requirement is for aircraft owners and operators to adhere to the airworthiness directive by taking action as specified in Bellanca Service Letter (SL) No. C-127 (2). This action involves implementing modifications or checks as outlined in the directive to ensure compliance with safety standards. The directive references FAA AD 77-20-05, Amendment 39-3069, which provides additional context and details on the required actions (3). The obligations imposed by the Civil Aviation Regulations 1998 are significant for those operating the affected aircraft models. Aircraft owners and operators must ensure that the specified modifications or checks are carried out on the front wing struts of their aeroplanes to maintain compliance with airworthiness standards. This includes verifying that all relevant serial numbers and model types are correctly identified and that any modifications are appropriately documented (4). Failure to comply with these obligations can result in the aircraft being deemed unairworthy, leading to potential grounding and other regulatory consequences (5). Breaching the requirements set out in AD/CHA/18 could lead to serious consequences, both civil and criminal. Under the Civil Aviation Act 1988, non-compliance with airworthiness directives can result in significant penalties. The maximum penalty for an individual is $216,000, while for a body corporate, the penalty can be as high as $1,080,000 (6). Additionally, CASA has the authority to take enforcement actions, such as suspending or cancelling an aircraft’s certificate of airworthiness, which could prevent the aircraft from being operated until compliance is achieved (7).