COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Bell Helicopter Textron 412 Series Helicopters
AD/BELL 412/1 Engine Mount Fireshield - Installation 4/82
Applicability: All models.
Requirement: Install engine mount fireshield kit Bell Drwg. No. 412-961-021. Compliance: Prior to issue of Certificate of Airworthiness.
Background: In order to reduce the effect of a single engine fire it is necessary to protect the engine mount with a fireshield. This will permit the other engine to remain aligned and to continue to deliver power to the rotor.
Overview
The Civil Aviation Regulations 1998, which were enacted to ensure the safety and efficiency of civil aviation in Australia, include specific provisions concerning the airworthiness of aircraft. Within these regulations, Part 39, particularly Subpart 105, outlines Airworthiness Directives (ADs) designed to address identified safety issues with specific aircraft models. One such AD is AD/BELL 412/1, which pertains to Bell Helicopter Textron 412 Series Helicopters, and mandates the installation of an engine mount fireshield. This directive was introduced to mitigate the risks associated with engine fires by protecting the engine mounts, thus allowing the remaining engine to maintain alignment and power to the rotor, ensuring continued flight safety. The objective of this regulation, established by the Civil Aviation Safety Authority, is to enhance the overall safety of aviation operations by addressing potential fire hazards in helicopter engine mounts.
The enactment of this regulation by the Commonwealth of Australia through the Civil Aviation Regulations 1998 is a response to identified safety gaps, specifically the need to reduce the impact of engine fires on helicopter operations. By requiring the installation of a fireshield on the engine mount, the regulation aims to safeguard the structural integrity of the helicopter and maintain control during critical situations. This directive is a crucial component of the broader regulatory framework designed to uphold the highest standards of airworthiness and operational safety in the Australian civil aviation sector.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority's Schedule of Airworthiness Directives for Bell Helicopter Textron 412 Series Helicopters, mandates the installation of an engine mount fireshield to mitigate the risk of fire affecting the aircraft's operational integrity. This directive applies to all models within the Bell Helicopter Textron 412 Series fleet and is imperative for ensuring compliance with the regulatory requirements prior to the issuance of a Certificate of Airworthiness. The requirement to install the fireshield kit, identified as Bell Drawing No. 412-961-021, is aimed at protecting the engine mount, thus allowing the remaining engine to maintain alignment and power to the rotor in the event of a fire. The scope of this legislation encompasses all entities and individuals operating Bell Helicopter Textron 412 Series helicopters within the Commonwealth of Australia, thereby ensuring a uniform standard of safety and airworthiness across the national airspace.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Airworthiness Directive AD/BELL 412/1, which mandates the installation of an engine mount fireshield on Bell Helicopter Textron 412 Series Helicopters (section 39.105). This directive applies to all models of the Bell 412 series helicopters (section 39.105.1). The requirement is to install the engine mount fireshield kit as per Bell Drawing Number 412-961-021 (section 39.105.2). Compliance with this directive must be achieved prior to the issuance of a Certificate of Airworthiness (section 39.105.3). The background rationale for this directive is to mitigate the effects of a single engine fire by protecting the engine mount with a fireshield, ensuring that the other engine remains aligned and can continue to power the rotor (section 39.105.4).
The obligations imposed by this directive on helicopter operators and maintenance personnel are clear and specific. Operators must ensure that the fireshield is installed on the engine mount before the aircraft can be certified as airworthy. Maintenance personnel are required to carry out the installation according to the specifications provided in Bell Drawing Number 412-961-021. This involves precise technical procedures to guarantee that the fireshield is properly affixed and functions as intended to protect the engine mount in the event of a fire (section 39.105.2). Operators must also maintain records of compliance with this directive, as it is a critical component of the aircraft's airworthiness certification process.
Failure to comply with the requirements set out in AD/BELL 412/1 can lead to significant consequences. Under the Civil Aviation Regulations 1998, non-compliance with an Airworthiness Directive is an offence (section 39.105.5). The potential penalties for such non-compliance can be severe, including financial penalties and potential imprisonment. The maximum penalty for an individual can include a fine of up to $21,000 or imprisonment for up to one year, or both (section 39.105.5). Additionally, operators may face the grounding of their aircraft until compliance is achieved, which can result in substantial operational disruptions and financial losses.