AD/DH 104/6 Amdt 1 - Engine Mount Attachment Brackets - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, are fundamental in regulating civil aviation within the country. These regulations encompass various aspects of aviation safety, including the establishment of airworthiness standards and directives. One such directive, F2006B08884, specifically targets the maintenance and inspection of the engine mount attachment brackets for the DH 104 (Dove) Series Aeroplanes. The directive, AD/DH 104/6 Amendment 1, was introduced to address potential safety issues related to the engine mount attachment brackets, ensuring that these components are regularly inspected to maintain airworthiness. The Civil Aviation Safety Authority (CASA) issued this directive to mandate that inspections be conducted at intervals not exceeding 50 hours of time in service after 30 April 1973, unless the aircraft has been modified in accordance with Hawker Siddeley Technical Notices CT(104) Numbers 50 and 65. The overarching policy objective is to enhance aviation safety by preventing mechanical failures and ensuring the continued airworthiness of aircraft operating under Australian jurisdiction.

Scope and Application

The Civil Aviation Regulations 1998, as amended, under the authority of the Civil Aviation Safety Authority, establish comprehensive standards and directives for maintaining airworthiness, particularly concerning the Hawker Siddeley Dove series aeroplanes. Specifically, AD/DH 104/6 Amendment 1 pertains to engine mount attachment brackets and mandates their inspection at intervals not exceeding 50 hours of time in service after 30 April 1973 for all models that have not been modified in accordance with Hawker Siddeley Technical Notice Service Change Transactions (TNS CT) Nos. 50 and 65. This regulation applies to all operators of Dove series aeroplanes within Australia and its territories, ensuring adherence to stringent safety standards. Compliance is documented through Hawker Siddeley TNS CT (104) Nos. 50 Issue 3 and 65 Issue 4, with no specific exclusions or exemptions stated in this directive. The broad application of these regulations is further extended and defined through subordinate instruments, ensuring the safety and operational integrity of affected aircraft.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39 - 105, detail the Airworthiness Directives (AD) for specific aircraft models, including the DH 104 (Dove) series aeroplanes. The pertinent section here is AD/DH 104/6 Amendment 1, which pertains to the inspection of engine mount attachment brackets (39-105). This directive applies to all Dove models that have not been modified in accordance with Hawker Siddeley Technical Notice Service Circular (TNS CT) numbers 50 and 65. These technical notices are referenced in the document Hawker Siddeley TNS CT(104) Nos. 50 Issue 3 and 65 Issue 4. Compliance with AD/DH 104/6 Amendment 1 requires that the inspection of engine mount attachment brackets must be conducted at intervals not exceeding 50 hours of time in service following 30 April 1973. This regulation is aimed at ensuring the continued airworthiness of the aircraft by maintaining the structural integrity of the engine mount attachment brackets. Operators of the DH 104 series aeroplanes are obligated to adhere to these inspection intervals to ensure safety and compliance with regulatory standards. Failure to comply with the inspection intervals specified in AD/DH 104/6 Amendment 1 may result in severe consequences. The Civil Aviation Safety Authority (CASA) can impose penalties for non-compliance, which may include fines and other enforcement actions. Additionally, failure to maintain the airworthiness of the aircraft through regular inspection could lead to the grounding of the aircraft, thereby affecting operational schedules and potentially leading to safety risks. Under the Civil Aviation Regulations 1998, the maximum penalties for non-compliance with airworthiness directives can be substantial. For example, individuals or entities found in breach of these regulations may face financial penalties that can reach significant amounts, depending on the severity and impact of the non-compliance. Furthermore, persistent non-compliance can result in more severe civil or criminal consequences, including the possibility of prosecution under the relevant aviation safety legislation. The specific penalties are detailed within the regulations and may be enforced by CASA.