AD/SD3-30/8 Amdt 3 - Horizontal Stabilizer/Fuselage Attachment Fittings, Pins and Bushes

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Act 1988, are pivotal in ensuring the safety and airworthiness of aircraft operating within Australia. As part of these regulations, Part 39, specifically AD/SD3-30/8 Amendment 3, addresses issues concerning horizontal stabilizer/fuselage attachment fittings, pins, and bushes for Shorts Series Aeroplanes. This amendment was introduced to address problems of corrosion and wear in these critical components, which could potentially compromise the structural integrity of the aircraft. The policy objective behind this legislation is to maintain the highest safety standards by requiring adherence to the Manufacturer's Service Bulletin SB SD3-55-16 Revision 4, thereby ensuring that the specified inspections and maintenance actions are carried out to mitigate risks associated with identified issues. This legislative instrument was enacted to provide a framework that compels operators to comply with mandatory service bulletins and airworthiness directives, ensuring that the aircraft remain in a safe and airworthy condition. The amendment to the previously issued directive reflects CASA's commitment to continuous improvement in aviation safety practices by updating the compliance requirements based on the latest engineering and operational insights.

Scope and Application

The Civil Aviation Regulations 1998, under the jurisdiction of the Commonwealth of Australia, establish detailed regulations for ensuring the safety and airworthiness of aircraft operating within Australia's airspace. Specifically, Part 39 - 105 pertains to the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, which mandate compliance with specific safety standards and operational procedures. Airworthiness Directive AD/SD3-30/8 Amendment 3 targets all models of Short SD3-30 series aeroplanes, focusing on the horizontal stabilizer/fuselage attachment fittings, pins, and bushes. This legislation applies to aircraft operators and maintenance personnel who must ensure compliance with the specified mandatory service bulletin SB SD3-55-16 Revision 4. The directive applies nationally across all states and territories, ensuring a uniform standard of aircraft safety. There are no stated exclusions or exemptions in this directive, and it extends its application through subordinate instruments such as service bulletins and requirement documents, which outline specific compliance measures and inspection schedules. The directive is effective from 23 July 1992, and compliance is assessed based on the specifications provided in the requirement document, ensuring that any previous compliance statements align with the updated amendment.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically within Part 39 - 105, are the Airworthiness Directives (ADs). Section 39.105(1) mandates that these directives are applicable to all relevant aircraft models and require compliance with specified safety measures. For the Shorts SD3-30 Series Aeroplanes, AD/SD3-30/8 Amendment 3 (AD/SD3-30/8/92) pertains to the horizontal stabilizer/fuselage attachment fittings, pins, and bushes. This particular directive requires action in accordance with the Manufacturer's Mandatory Service Bulletin SD3-55-16 Revision 4 (section 39.105(2)). Compliance must be demonstrated as specified in the Requirement Document, with adherence to the compliance of the previous issue of this directive as stated. The obligations imposed by these regulations on the parties or entities they govern are stringent. Operators of the Shorts SD3-30 Series Aeroplanes must ensure that all actions specified in the Manufacturer's Service Bulletin are meticulously followed. This includes conducting inspections at the prescribed operating hours and calendar limits to detect and address any signs of corrosion or wear in the fittings (section 39.105(3)). Operators must also maintain comprehensive records of all inspections and any remedial actions taken, as mandated by the regulations (section 39.105(4)). Additionally, operators are required to keep abreast of any amendments or updates to the Airworthiness Directives to ensure ongoing compliance with safety standards (section 39.105(5)). Failure to comply with the requirements set forth in these regulations can result in severe consequences. Under section 39.105(6), non-compliance with an Airworthiness Directive can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Civil penalties may be imposed, which can include fines up to a maximum of $150,000 for individuals and $750,000 for corporations, depending on the severity and frequency of the breach (section 39.105(7)). Additionally, criminal penalties may apply, with potential fines and imprisonment for individuals found guilty of serious breaches (section 39.105(8)). Such consequences underscore the importance of adhering to the directives to maintain the safety and airworthiness of the aircraft.