AD/LA-4/11 - Engine Mount Upper Side Straps - Inspection

Overview

The Civil Aviation Regulations 1998, specifically Part 39 – 105, introduced Airworthiness Directives under the oversight of the Civil Aviation Safety Authority (CASA). The regulations were enacted to address safety issues and ensure the airworthiness of aircraft, thereby enhancing the safety standards within the aviation industry. The policy objective of these regulations is to ensure that all aircraft meet specified safety standards to protect the public and maintain the integrity of the aviation system. The enactment of these regulations was aimed at closing safety gaps and providing a legal framework for the regular inspection and maintenance of aircraft components, such as the engine mount upper side straps for specific aircraft models as detailed in the directives.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority, apply to the inspection of engine mount upper side straps for specific series of aeroplanes. This regulation is particularly relevant for Colonial C-2, LA-4A, LA-4P, LA-4, and LA-4-200 models, up to serial number 547. The directive mandates an impartial inspection within 25 hours of time in service after 31 May 1974, followed by a full inspection at intervals not exceeding 100 hours of time in service. This regulation ensures ongoing airworthiness and safety standards for these aircraft, overseen by the Civil Aviation Safety Authority and applicable across the Commonwealth of Australia. Subordinate instruments may further extend or clarify the application of these directives, ensuring compliance and safety within the aviation industry.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes a schedule of airworthiness directives pertinent to certain aircraft. One such directive, AD/LA-4/11, pertains to the engine mount upper side straps of Consolidated Aeronautics, Colonial, and LA-4 series aeroplanes. This directive is applicable to all Colonial C-2, LA-4A, LA-4P, LA-4, and LA-4-200 aeroplanes up to serial number 547. The primary objective of this directive is to ensure the safety of the aircraft through regular inspections of the specified components. Under section 1 of the directive, an impartial inspection must be conducted within 25 hours of time in service after 31 May 1974. Subsequent inspections must be carried out at intervals not exceeding 100 hours of time in service. The inspections are intended to identify and rectify any issues that may compromise the structural integrity of the engine mount upper side straps. The regulations require that these inspections are conducted in accordance with the documentation provided by Consolidated Aeronautics SL L43, ensuring consistency and adherence to the established safety standards. The obligations imposed by the Civil Aviation Regulations 1998 on the parties and entities governed by this directive are significant. Operators and owners of the specified aircraft must ensure that these inspections are performed by qualified personnel in a timely and thorough manner. This includes maintaining accurate records of each inspection, ensuring that any identified issues are addressed promptly and effectively. The regulations mandate that any necessary repairs or replacements must be carried out in accordance with the manufacturer's specifications to maintain the airworthiness of the aircraft. Failure to comply with the requirements outlined in AD/LA-4/11 can lead to serious consequences. The Civil Aviation Safety Authority (CASA) may impose penalties for non-compliance, including fines and potential suspension or revocation of the aircraft's operating certificate. The severity of these penalties underscores the importance of adhering to the inspection schedule and ensuring that all safety directives are followed meticulously. The specific penalties and consequences for non-compliance are detailed within the broader regulatory framework of the Civil Aviation Regulations 1998, with maximum penalties potentially applying for repeated or severe breaches of the regulations.