AD/B747/59 - Fuselage Upper Body Tear Strap Disbonding

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, are fundamental to regulating civil aviation in the country. One of the specific pieces of legislation within this framework is the Airworthiness Directives, which address safety concerns and set mandatory requirements to maintain the airworthiness of aircraft. The directive in question, AD/B747/59, pertains to Boeing 747 series aeroplanes and specifically targets the issue of fuselage upper body tear strap disbonding. This directive was introduced to address the problem of reported disbonding of the hot bonded skin tear straps on the upper body of the aircraft, which poses a significant safety risk. The policy objective is to ensure compliance by requiring inspections as per the specified Boeing Service Bulletin, thereby mitigating potential hazards and maintaining the overall safety standards of the aviation industry. The directive, issued under the authority of the Civil Aviation Safety Authority, mandates that all applicable Boeing 747 series aeroplanes undergo inspection in accordance with the specified requirement document until the corrective action is completed. This approach ensures that any identified disbonding is addressed promptly, thereby preventing potential safety incidents. The directive references both Boeing Service Bulletin 747-53A2279 R1 and Federal Aviation Administration AD 87-16-13 for guidance on the necessary actions to be taken, reflecting a collaborative effort to uphold international safety standards within Australia’s aviation sector.

Scope and Application

The Civil Aviation Safety Authority Schedule of Airworthiness Directives, specifically AD/B747/59, pertains to Boeing 747 series aeroplanes, outlining the mandatory compliance requirements for addressing fuselage upper body tear strap disbonding. This regulation applies to all models of the Boeing 747 series, demanding adherence to the specified inspection and corrective actions as detailed in Boeing Service Bulletin 747-53A2279 R1. The directive was issued to ensure the safety and airworthiness of these aircraft, referencing the Federal Aviation Administration's AD 87-16-13 for further guidance. Compliance necessitates inspecting the affected areas as outlined in the Requirement Document until the specified corrective measures are implemented. This regulatory mandate ensures that the identified safety issue is systematically addressed, maintaining the structural integrity and operational safety of Boeing 747 aeroplanes within the Australian aviation sector.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the authority of the Civil Aviation Safety Authority, outlines the airworthiness directives for Boeing 747 series aeroplanes, including a directive for addressing fuselage upper body tear strap disbonding (AD/B747/59). This directive applies to all models listed in the Requirement Document and mandates actions in accordance with Boeing Service Bulletin 747-53A2279 Revision 1, referencing FAA AD 87-16-13. The directive requires inspections to be conducted in line with the specified Requirement Document until the corrective action is completed. It is important to note that this directive was issued due to reported instances of disbonding of the upper body hot bonded skin tear straps. The obligations under this airworthiness directive are quite clear. Operators of Boeing 747 series aeroplanes must ensure that inspections are carried out as per the specified Requirement Document, which includes identifying and addressing any disbonding of the upper body tear straps. This involves adherence to the Boeing Service Bulletin 747-53A2279 R1, which provides detailed procedures for identifying and rectifying the disbonding issue. Compliance with these requirements is crucial to maintaining the airworthiness of the aircraft and ensuring passenger safety. Failure to comply with the airworthiness directive may result in significant consequences. Although the Civil Aviation Regulations do not explicitly outline specific penalties for non-compliance with airworthiness directives, non-compliance can lead to enforcement actions by the Civil Aviation Safety Authority. These actions may include grounding of the aircraft, fines, and potentially more severe sanctions if the non-compliance is found to have compromised safety. The regulatory framework ensures that any breaches of airworthiness standards are taken seriously and addressed promptly to uphold the highest safety standards in civil aviation.