Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, provide a comprehensive framework for the safety and regulation of civil aviation within the country. One specific aspect of these regulations, detailed in Part 39, is the issuance of Airworthiness Directives to ensure aircraft and associated equipment meet the necessary safety standards. One such directive, AD/OXY/12, pertains to the PELS® model 4566M37B crewmember Protective Breathing Equipment produced by Essex PB&R Corporation. The directive was introduced to address a potential safety risk identified by the manufacturer regarding a defective adhesive bond between the hood shell and neck seal of certain PBE units, which could compromise user protection and impair crewmembers' ability to combat aircraft fires. The objective of this directive is to mandate the removal of affected equipment from service, thereby mitigating the risk of compromised crewmember safety. The enacting body for these regulations is the Australian Parliament, which aims to ensure that all civil aviation operations within Australia meet stringent safety standards. The policy objective behind the issuance of this particular Airworthiness Directive is to eliminate potential hazards that could endanger the lives of aircrew by ensuring that any identified defects in crewmember protective breathing equipment are addressed promptly and effectively. By setting compliance deadlines and referencing related service bulletins, the regulations aim to maintain high safety standards and protect the public from aviation-related risks.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 107, mandate the application of the Civil Aviation Safety Authority’s schedule of Airworthiness Directives, including AD/OXY/12 which pertains to the PELS Model 4566M37B crewmember Protective Breathing Equipment manufactured by Essex PB&R Corporation. This directive applies to PBE units with specific serial numbers, manufactured within a narrow window between 29 March 1989 and 9 May 1989, and potentially installed on transport category aircraft from manufacturers such as Boeing, McDonnell Douglas, Airbus, and Lockheed. The directive’s requirement is to remove these specific PBE units from service, aligning with the instructions provided in the Essex PB&R Corporation Service Bulletin 001 Revision 1 dated 3 October 1991. Compliance with this directive is necessary to mitigate the risk of compromised user protection due to a potentially defective adhesive bond between the hood shell and neck seal, which could result in inadequate protection during an aircraft fire. The directive mandates that compliance must be achieved prior to 31 December 1994. The scope of this regulation is national, applying throughout the Commonwealth of Australia as per the Civil Aviation Regulations 1998.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39 - 107 under the Civil Aviation Safety Authority's schedule of Airworthiness Directives, addresses the safety of oxygen systems on certain aircraft. Specifically, AD/OXY/12 pertains to the PELS® model 4566M37B crewmember Protective Breathing Equipment (PBE) units manufactured by Essex PB&R Corporation. These units, serial numbers as listed in the Essex PB&R Corporation Service Bulletin 001 Revision 1 dated 3 October 1991, were produced between 29 March 1989 and 9 May 1989. The directive applies to PBE units installed on transport category aircraft from manufacturers such as Boeing, McDonnell Douglas, Airbus, and Lockheed. The primary requirement (Section 1) is the removal of these specific PBE units from service in accordance with the manufacturer's Service Bulletin 001 Revision 1 dated 3 October 1991. This action is crucial to ensure safety, as the manufacturer identified a potentially defective adhesive bond between the hood shell and neck seal of certain PBE units, which could compromise user protection. Compliance with this directive is necessary to prevent crewmembers from being unable to effectively combat an aircraft fire due to leakage of the PBE neck seal. The obligations imposed by the Act on the parties or entities it governs are straightforward but critical. Operators and owners of transport category aircraft equipped with the specified PBE units must adhere to the removal directive (Section 2). This includes identifying the affected units, ensuring they are removed from service, and documenting the removal process. Compliance must be achieved before the deadline of 31 December 1994, as stipulated in the directive. Failure to comply with this requirement could result in significant safety risks, including the inability of crewmembers to use their protective breathing equipment in the event of an emergency. The Act outlines severe consequences for non-compliance with the Airworthiness Directive (Section 3). While the specific civil or criminal penalties are not detailed in the text, non-compliance with Civil Aviation Regulations can typically lead to enforcement actions by the Civil Aviation Safety Authority. These actions may include fines, operational restrictions, or even the grounding of aircraft until the directive is complied with. The potential for such stringent measures underscores the importance of adhering to the Airworthiness Directive to maintain the highest standards of aviation safety.