AD/B747/47 - Upper Deck Type A Door - Power and Slide Deployment Mechanism Fasteners

Overview

The Civil Aviation Regulations 1998, amended through Legislative Instrument F2006B03227, address specific maintenance requirements for Boeing 747 Series aeroplanes, particularly focusing on the upper deck Type A door's power and slide deployment mechanism fasteners. This regulation was introduced to ensure that all applicable aircraft meet stringent safety standards, aligning with international directives and manufacturer recommendations. Enacted by the Australian Government, the policy objective is to enhance aviation safety by mandating compliance with specific maintenance actions, as detailed in Boeing Service Bulletin 747-52A2198, to address issues related to the locking torque of self-locking nuts P/N BACN10JC6CM, which, if unresolved, could compromise the integrity of the aircraft's door deployment mechanism. The regulation also references Federal Aviation Administration Advisory Directive 86-02-03 for consistency and compliance with broader international aviation safety standards. This legislative instrument, administered by the Civil Aviation Safety Authority, underscores the importance of rigorous maintenance protocols to prevent potential safety hazards associated with the specified component of Boeing 747 aircraft. By setting a compliance deadline and referencing relevant service bulletins and advisory directives, the regulation aims to ensure that all affected aircraft are serviced and maintained to the required safety standards, thereby protecting passengers, crew, and the integrity of the aviation system.

Scope and Application

The Civil Aviation Regulations 1998, as amended, include specific safety directives for maintaining the airworthiness of aircraft operating in Australia. Part 39 - 105, concerning the Civil Aviation Safety Authority's schedule of airworthiness directives, applies to all Boeing 747 series aeroplanes and mandates compliance with Boeing Service Bulletin 747-52A2198 regarding the upper deck Type A door - power and slide deployment mechanism fasteners. This directive is essential for ensuring that the fasteners meet the specified locking torque requirements to prevent mechanical failure. The regulations have a broad reach, applying to all operators and owners of Boeing 747 aircraft within Australia's jurisdiction, and compliance must be achieved before the specified deadline of 31 March 1986. The directive extends its application through the referencing of FAA AD 86-02-03, indicating that the regulations are in alignment with international safety standards.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39 - 105, specifically address the maintenance and safety standards for certain aircraft, such as the Boeing 747 series. One notable section is AD/B747/47, which focuses on the upper deck Type A door, particularly the power and slide deployment mechanism fasteners (Section 105.125). This regulation mandates that all applicable aircraft must comply with Boeing Service Bulletin 747-52A2198. This service bulletin provides detailed instructions for ensuring the safety and proper functioning of the upper deck door’s deployment mechanism. The regulations impose several obligations on the parties involved. Firstly, the operators of Boeing 747 series aircraft must ensure that all fasteners related to the upper deck door’s power and slide deployment mechanism are inspected and maintained according to the specifications laid out in Boeing SB 747-52A2198 (Section 105.126). Secondly, any identified issues must be addressed promptly to meet the safety standards stipulated in the legislation. Operators must also keep detailed records of all inspections and maintenance activities performed on these components (Section 105.127). Failure to comply with these directives can result in serious consequences. Non-compliance with the AD/B747/47 provisions may lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Such actions can include the issuance of directives, fines, or other administrative penalties. In severe cases, CASA may also suspend or revoke the aircraft's airworthiness certificate, which would prevent the aircraft from operating until the issues are rectified (Section 105.128). The potential penalties underscore the importance of adhering to the specified maintenance requirements to ensure the safety and reliability of the aircraft in question.