AD/DH 104/19 Amdt 1 - Engine Mounting Frames - Inspection

Overview

The Civil Aviation Regulations 1998, amended by the legislative instrument F2006B08863, pertain to the maintenance and safety of aircraft, specifically addressing the inspection of engine mounting frames for the Dove series aeroplanes. Enacted by the Australian Government, this regulation was introduced to ensure that all Dove series aeroplanes fitted with engine mount frames No. 4EM201A and 4EM203A are regularly inspected for internal corrosion. This is intended to maintain airworthiness and enhance flight safety. Compliance with this directive is mandatory at intervals not exceeding four years, with inspections to be performed visually and radiographically, in accordance with specified technical notes, and any related findings must be submitted to the Secretary for review.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, addressing the maintenance and inspection requirements for specific aircraft models. In this instance, the Airworthiness Directive (AD) AD/DH 104/19 Amendment 1 is targeted at all Dove Series Aeroplanes, specifically those fitted with engine mounting frames No. 4EM201A and 4EM203A. The directive mandates a comprehensive inspection of these engine mounting frames for any signs of internal corrosion, utilising both visual and radiographic examination methods. The inspections must adhere to the guidelines provided in Hawker Siddeley Technical Notice CT(104) No. 190 Issue 2, and all radiographs along with their respective reports are to be submitted to the Secretary for review and examination. The frequency of these inspections is stipulated to be at intervals not exceeding four years, ensuring ongoing airworthiness and safety of the specified aircraft. The regulatory scope of this Airworthiness Directive extends to all entities operating Dove Series Aeroplanes equipped with the designated engine mounting frames within the Commonwealth of Australia. This ensures a uniform approach to aircraft maintenance and safety across the nation. It is important to note that the directive is strictly applicable to the specified models and components, with no stated exclusions or exemptions within the provided text. Any additional application or extension of these regulations might be detailed in subordinate instruments, which could further refine or expand the scope of compliance requirements.

Key Provisions

The primary operative sections of the Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for DH 104 (Dove) Series Aeroplanes, require that aircraft fitted with engine mount frames No. 4EM201A and 4EM203A undergo specific inspections. Section AD/DH 104/19 Amendment 1 mandates these inspections to check for evidence of internal corrosion in the engine mounting frames using both visual and radiographic methods. This inspection must be conducted in accordance with Hawker Siddeley Technical Notice CT(104) No. 190 Issue 2, and the radiographs and associated reports must be submitted to the Secretary for examination. The inspections must be carried out at intervals not exceeding four years. The obligations imposed by these provisions are clear and specific. Operators of Dove Series Aeroplanes with the specified engine mount frames must ensure that the inspections are conducted properly, adhering to the guidelines set out in the Hawker Siddeley Technical Notice. This includes maintaining detailed records of the inspections and ensuring that the radiographs and reports are submitted to CASA as required. Failure to comply with these obligations can result in severe consequences, including grounding of the aircraft until the required inspections are performed. In terms of compliance, the regulations leave no room for ambiguity. Non-compliance with the airworthiness directive can lead to serious consequences. The Civil Aviation Regulations 1998 provide for various offences and penalties for breaches. For instance, if an operator fails to conduct the required inspections, CASA may take enforcement action, which could include fines, suspension of the aircraft's certificate of airworthiness, or even criminal charges. The maximum penalties for such offences can be substantial, reflecting the importance of adhering to these safety requirements. Operators must therefore ensure that they are fully compliant with all the stipulated requirements to avoid these serious repercussions.