AD/B747/126 - Pneumatic Duct Coupling

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, include the Civil Aviation Safety Authority Schedule of Airworthiness Directives which were enacted to ensure the safety and airworthiness of aircraft in Australia. The directive AD/B747/126, introduced in 1994, addresses the problem of pneumatic duct coupling failures in Boeing 747 series aeroplanes. This legislation was introduced by the Commonwealth of Australia, with the intent to align with the Federal Aviation Administration’s (FAA) requirements as outlined in FAA AD 94-09-13 Amdt 39-8902. The policy objective is to maintain and enhance the safety standards of civil aviation by mandating specific actions and compliance with detailed technical requirements for the affected aircraft. The directive applies to all Boeing 747 series aeroplanes with line positions 1 through 219 inclusive, ensuring that these aircraft meet the necessary safety standards to prevent failures in the pneumatic duct couplings.

Scope and Application

The Civil Aviation Safety Authority Schedule of Airworthiness Directives applies specifically to all Boeing 747 series aeroplanes with line positions 1 through 219 inclusive. This legislative instrument is part of the overarching Civil Aviation Regulations 1998, ensuring that all applicable aircraft adhere to the stipulated safety directives to mitigate risks associated with reported failures of duct couplings installed on the wing leading edge pneumatic duct. The requirement mandates compliance with the technical specifications outlined in FAA AD 94-09-13 Amdt 39-8902, with reference to Purolator Service Bulletin FSC-912 dated December 1972, ensuring that all maintenance and repair actions are performed in accordance with these standards. The directive extends nationally, overseen by the Civil Aviation Safety Authority, with no exclusions or exemptions specified within this particular legislative instrument, though broader applicability and specific conditions may be detailed in subordinate instruments or related regulatory documentation.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the Airworthiness Directives for Boeing 747 Series Aeroplanes, with AD/B747/126 focusing on the pneumatic duct coupling (section 1). This regulation applies to all Boeing 747 series aeroplanes with line positions ranging from 1 through 219 inclusive (section 2). The requirement set forth in the directive mandates that actions must be taken in accordance with the technical specifications outlined in FAA AD 94-09-13 Amendment 39-8902 (section 3). Additionally, it references Purolator Service Bulletin FSC-912 dated December 1972 for further guidance (section 4). Compliance with this directive necessitates adherence to the requirements detailed in the Requirement Document (section 5). The Act imposes specific obligations on the operators and maintainers of Boeing 747 series aeroplanes, mandating that they ensure the pneumatic duct couplings are in compliance with the technical requirements stipulated by FAA AD 94-09-13 Amendment 39-8902. This includes any necessary inspections, repairs, or replacements of the duct couplings to prevent failures, which have been previously reported in certain installations on the wing leading edge pneumatic duct (section 6). Operators and maintainers must keep detailed records of all actions taken to comply with the directive, ensuring traceability and accountability in the maintenance process (section 7). Failure to comply with the provisions of AD/B747/126 may result in serious consequences, both civil and criminal. Civil penalties may include fines and sanctions imposed by the Civil Aviation Safety Authority (CASA) for non-compliance (section 8). Additionally, if the failure to adhere to the directive results in an incident or accident, operators and maintainers may face criminal charges under the Civil Aviation Act 1988 (section 9). The maximum penalties for such offences can include substantial fines and imprisonment, depending on the severity of the breach and the resulting impact on aviation safety (section 10).