AD/DHC-3/9 - Tailplane Trim Indicator

Overview

The Civil Aviation Regulations 1998, specifically in Part 39 - 105, incorporate the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, addressing various safety concerns for different aircraft types, including the DHC-3 (Otter) series aeroplanes. This legislative instrument, known as F2006B09095, was enacted to ensure that civil aviation operations in Australia comply with stringent safety standards, filling a critical gap in the oversight and management of aircraft maintenance and operations. The Australian Parliament established these regulations to safeguard the public and promote the safe, efficient, and orderly development of civil aviation in Australia, aligning with international safety norms and practices. The primary objective of this legislative instrument is to mandate compliance with the De Havilland Canada EB “O” No 21, which pertains to the tailplane trim indicator of DHC-3 (Otter) series aeroplanes. By integrating this directive into the Civil Aviation Regulations, the Australian Government aims to prevent potential safety hazards associated with the aircraft's trim indicator, ensuring that operators take immediate action as specified. This directive is crucial for maintaining the airworthiness of the aircraft and ultimately protecting the safety of all persons on board.

Scope and Application

The Civil Aviation Safety Authority (CASA) Regulations 1998, specifically under Part 39 - 105, establish Airworthiness Directives for DHC-3 (Otter) series aeroplanes, focusing on the tailplane trim indicator. These regulations apply to all operators of DHC-3 series aeroplanes registered in Australia, ensuring that these aircraft meet specific safety standards as prescribed by the De Havilland Canada Engineering Bulletin No 21. The compliance requirement necessitates immediate action by aircraft operators, aligning with the directive to address any issues identified by the Canadian AD 56-8. This regulatory framework extends across the entire Commonwealth, enforcing strict adherence to safety protocols to maintain airworthiness and ensure the safety of passengers and crew. The scope of these regulations is limited to the specified aircraft model and the particular safety concern outlined, without broader applicability to other types of aircraft or aviation-related activities. The Airworthiness Directives outlined in the Civil Aviation Regulations 1998 are designed to address specific safety issues within the DHC-3 (Otter) series aeroplanes, focusing exclusively on the tailplane trim indicator. These regulations apply to all aircraft operators within Australia who possess a DHC-3 series aeroplane, ensuring that they comply with the standards set forth in the De Havilland Canada Engineering Bulletin No 21. The requirement for compliance is immediate, mandating operators to take corrective action as specified. The regulations' jurisdictional reach is comprehensive, applying across the entire Commonwealth. There are no stated exclusions or exemptions within the scope of these regulations, which strictly adhere to the specified safety directives. Any further application or interpretation of these regulations may be extended or restricted through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the safety directives for certain aircraft, including the DHC-3 (Otter) Series Aeroplanes. One such directive, AD/DHC-3/9, pertains to the tailplane trim indicator. According to section (1), this directive applies to the specific aircraft models as detailed in the Requirement Document. The directive mandates that the action required to ensure compliance must be in accordance with De H Canada EB “O” No 21, referencing Canadian AD 56-8 for further guidance. Under this legislation, the obligations imposed on the parties, particularly those responsible for the maintenance and operation of DHC-3 (Otter) Series Aeroplanes, are clear and precise. They are required to implement the actions specified by De H Canada EB “O” No 21, ensuring the tailplane trim indicator is compliant with the safety standards outlined. This includes adhering to the detailed instructions provided in the Requirement Document and referencing Canadian AD 56-8 for any supplementary information. The directive must be followed forthwith, underscoring the urgency and importance of maintaining airworthiness standards. Failure to comply with the provisions of AD/DHC-3/9 can result in severe consequences. Section (3) of the Civil Aviation Regulations 1998 outlines the potential civil and criminal penalties for non-compliance. The specific penalties are not detailed in the provided text, but generally, such breaches can lead to fines, potential grounding of the aircraft, and legal action against the responsible parties. The severity of these consequences highlights the importance of adhering to the directives to ensure the safety and airworthiness of the aircraft involved.