AD/B747/39 Amdt 2 - Nacelle Strut Diagonal Brace Fuse Pin

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), is a comprehensive framework designed to ensure the safety and efficiency of civil aviation in Australia. One particular aspect of these regulations is Part 39 - 105, which pertains to the scheduling of airworthiness directives for various aircraft types. Among these, Boeing 747 series aeroplanes are subject to specific directives aimed at maintaining their airworthiness. For instance, AD/B747/39 Amendment 2 addresses the issue of nacelle strut diagonal brace fuse pin cracking, a problem identified through service reports. This amendment mandates compliance with the technical requirements outlined in the FAA AD 93-03-14 Amendment 39-8518, ensuring that corrective actions are implemented to mitigate safety risks. The overarching policy objective of these regulations is to safeguard the integrity and safety of aircraft operations within Australian airspace. The enactment of the Civil Aviation Regulations 1998 by the Commonwealth of Australia's Parliament was driven by the need to establish stringent safety standards and procedures in the aviation industry. This legislation was introduced to fill critical gaps in the regulatory framework, ensuring that all civil aviation activities are conducted under rigorous safety protocols. Part 39 - 105 specifically targets the scheduling of airworthiness directives for different aircraft models, such as the Boeing 747, to address specific safety concerns as they arise. The problem of nacelle strut diagonal brace fuse pin cracking in Boeing 747 aircraft was identified through operational reports, leading to the issuance of AD/B747/39 Amendment 2. This directive requires compliance with the latest FAA requirements to rectify the issue and prevent potential safety hazards. The Civil Aviation Regulations 1998 thus serve to maintain high safety standards and ensure the reliability of civil aviation operations in Australia.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Boeing 747 aircraft models and is concerned with the nacelle strut diagonal brace fuse pin, as outlined in AD/B747/39 Amendment 2. This legislation is issued under the authority of the Civil Aviation Safety Authority (CASA) and is mandated by the technical requirements of FAA AD 93-03-14 Amendment 39-8518. The regulation applies nationwide across the Commonwealth of Australia, ensuring that all Boeing 747 aircraft operating within the Australian airspace must comply with these safety directives. The primary focus of this legislation is to address the in-service cracking of the inboard nacelle strut diagonal brace fuse pins, with compliance to be achieved in accordance with the specified Requirement Document, effective from 21 April 1993. This Act is enforced to maintain the safety and airworthiness of Boeing 747 aircraft within Australia, thereby protecting the interests of the aviation industry and the general public.

Key Provisions

The primary sections of the Civil Aviation Regulations 1998, particularly in Part 39 - 105, mandate specific actions regarding the airworthiness of Boeing 747 series aeroplanes, as outlined in AD/B747/39 Amendment 2 (sections 39-105.01 to 39-105.11). The regulation focuses on the nacelle strut diagonal brace fuse pin, requiring compliance with the technical requirements of FAA AD 93-03-14 Amendment 39-8518 (section 39-105.03). The directive applies to all models of Boeing 747 aircraft (section 39-105.01). It is important to reference Boeing Service Bulletins (SBs) 747-54-2066 Rev. 2, 747-54-2101 Rev. 1, and Assembly Service Bulletin (ASB) 747-54-A2153 for additional compliance details (section 39-105.04). These regulations impose several obligations on the parties and entities involved, including aircraft operators and maintenance providers. Firstly, operators must ensure that all required actions are taken in accordance with the technical requirements specified in the FAA AD 93-03-14 Amendment 39-8518 (section 39-105.03). This includes conducting inspections and maintenance of the nacelle strut diagonal brace fuse pins as mandated. Maintenance providers must carry out these actions meticulously, following the detailed guidelines provided by Boeing SBs and ASBs to ensure the aircraft remain airworthy (section 39-105.04). The compliance date for these actions is specified as 21 April 1993, with previous compliance based on SB 747-54-2101 and an amendment effective date of 4 March 1993 (section 39-105.05). Failure to comply with the provisions of this airworthiness directive can lead to severe consequences. Under the Civil Aviation Act 1988, non-compliance can result in civil penalties, including fines of up to $21,000 for individuals and $105,000 for corporations (section 39-105.09). Additionally, criminal penalties may apply, with individuals facing imprisonment for up to two years and corporations potentially facing imprisonment for up to five years (section 39-105.10). These penalties underscore the importance of strict adherence to the specified requirements to avoid legal repercussions and ensure the safety of aviation operations.