AD/B747/43 - Door Mounted Escape Slide/Raft Girt Bar Attachment Assembly - Inspection and Replacement

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, address the necessity for stringent safety standards in civil aviation to ensure the safety and reliability of aircraft operations. Specifically, PART 39 - 105, under the Civil Aviation Safety Authority, establishes the Schedule of Airworthiness Directives which are critical for maintaining aircraft airworthiness. One such directive, AD/B747/43, pertains to Boeing 747 series aeroplanes, focusing on the door-mounted escape slide/raft girt bar attachment assembly. This directive was introduced to rectify an identified safety issue where the sewn quick disconnect loops of the escape slides/rafts separated from the girt bar assembly during an emergency evacuation, potentially compromising the aircraft's safety. The policy objective of this directive is to mandate inspections and replacements as per specified Boeing and BF Goodrich service bulletins to prevent such separations and ensure the integrity of the emergency evacuation systems.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 105, applies to all Boeing 747 Series aeroplanes equipped with certain models of BF Goodrich light weight slide/raft parts. The legislation mandates the inspection and replacement of the door-mounted escape slide/raft girt bar attachment assembly to prevent the slide from detaching during an emergency evacuation. This requirement is applicable under the Boeing Service Bulletin 25A2665 R1 and BF Goodrich Service Bulletin 25-093, with references to FAA AD 84-24-04. Compliance with these safety directives is crucial and must be undertaken in accordance with the specific instructions outlined in the referenced requirement documents. The geographic scope of these regulations is national, applying to all such aeroplanes operating within Australia. The Act does not provide explicit details on exclusions or thresholds, but the applicability is strictly limited to the specified models and configurations. The scope of application can be further extended or detailed through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes a Schedule of Airworthiness Directives that mandates the inspection and replacement of door-mounted escape slide/raft girt bar attachment assemblies for Boeing 747 Series aeroplanes. This directive, AD/B747/43, applies to all models equipped with certain BF Goodrich lightweight slide/raft part numbers (sections 7A1340, 7A1342, 7A1373, 7A1437, 7A1439, 7A1447, or 7A1448). The directive requires compliance with Boeing Service Bulletin 25A2665 R1 and BF Goodrich Service Bulletin 25-093. It references the FAA AD 84-24-04 for further context. The obligations imposed by this directive necessitate that operators of affected Boeing 747 aircraft ensure the inspection and, if necessary, the replacement of the specified girt bar attachment assemblies. This is to prevent the separation of the sewn quick disconnect loops during an emergency evacuation, which could compromise the integrity of the escape slide and subsequently the safety of passengers and crew. The compliance procedures are detailed within the referenced service bulletins, which provide specific instructions on identifying, inspecting, and replacing the faulty components. Failure to comply with the requirements of AD/B747/43 may result in significant consequences. The Civil Aviation Safety Authority (CASA) could impose administrative and legal penalties on the operators. These may include fines, suspension, or revocation of airworthiness certificates, which could lead to grounding of the affected aircraft. Additionally, operators may face civil liabilities if non-compliance results in accidents or incidents, potentially leading to substantial compensation claims from affected parties. In summary, AD/B747/43 mandates specific inspections and replacements on Boeing 747 aircraft to prevent potential hazards during emergency evacuations. Compliance is essential to ensure passenger and crew safety, and non-compliance could result in severe administrative, legal, and financial penalties.