AD/DH 87/1 - Seat Restraint Installations - Modification

Overview

The Civil Aviation Regulations 1998, specifically within Part 39 - 105, address the safety and airworthiness requirements for certain types of aircraft. Enacted by the Parliament of Australia, these regulations were designed to ensure that civil aviation operations are conducted in a manner that minimises the risk to public safety. The Civil Aviation Safety Authority (CASA) oversees the implementation and enforcement of these regulations, ensuring that aircraft meet stringent safety standards. The problem this legislation aimed to address was the need to enhance safety within the civil aviation sector by mandating specific modifications to aircraft equipment, particularly focusing on seat restraint installations to prevent accidents and ensure passenger safety. In response to identified safety gaps, the Civil Aviation Regulations 1998 introduced Airworthiness Directive AD/DH 87/1, which mandates the modification of seat restraint installations on DH 87 (Hornet Moth) series aeroplanes by fitting approved safety harnesses. This directive was introduced to ensure compliance with safety standards and protect passengers from potential hazards during flight. The policy objective behind this directive was to standardise and enhance the safety of seat restraint installations, thereby reducing the risk of injury or fatality in the event of an accident. The compliance deadline set by the regulation was 1 March 1983, ensuring that all affected aircraft would meet the new safety requirements within a specified timeframe.

Scope and Application

The Civil Aviation Regulations 1998, as amended, under the authority of the Civil Aviation Act 1988, encompass a wide array of regulations to ensure the safety and efficacy of civil aviation in Australia. Specifically, Part 39 - 105, concerning the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, mandates strict adherence to certain directives to maintain airworthiness standards. One such directive, AD/DH 87/1, applies to all models of the DH 87 (Hornet Moth) series aeroplanes, stipulating the mandatory modification of each seat restraint installation to include a safety harness, which must conform to a scheme approved by the Secretary. Compliance with this directive is required unless the modifications have already been completed, with a deadline set before 1 March 1983. This regulation extends across the entire Commonwealth of Australia, overseen by the Civil Aviation Safety Authority, ensuring that all operators of DH 87 series aeroplanes conform to these safety standards. This directive does not specify exclusions or exemptions but rather sets a clear requirement for all applicable aircraft to meet the prescribed safety standards. While the primary regulation outlines the necessity for seat restraint modifications, additional guidance and detailed installation schemes can be found in the Airworthiness Advisory Circular No. 62 dated March 1972 and its subsequent amendments, which provide further direction to ensure compliance. The scope of the directive is thus broad, applying uniformly across the industry to maintain a consistent safety standard, with potential extensions or restrictions managed through subordinate instruments as necessary.

Key Provisions

The main operative sections of this piece of legislation (Civil Aviation Regulations 1998, Part 39 - 105) pertain to Airworthiness Directives (AD) for the DH 87 (Hornet Moth) series aeroplanes. Specifically, AD/DH 87/1 focuses on seat restraint installations and mandates that each seat restraint must be modified by fitting a safety harness. This requirement applies to all models of the DH 87 series (Section 1). The modification must comply with a scheme approved by the Secretary, with guidelines for such schemes provided in Airworthiness Advisory Circular No. 62 dated March 1972 and any subsequent amendments, such as those outlined in Airworthiness Advisory Circular No. 63 (Section 2). Compliance with this directive is mandatory, and any modifications must be completed before 1 March 1983, unless they have already been accomplished (Section 3). The Act imposes specific obligations and requirements on the parties or entities it governs. Owners and operators of DH 87 series aeroplanes must ensure that all seat restraint installations are modified according to the approved scheme. This includes verifying that the safety harness is fitted correctly and that it meets the standards set out in the approved guidelines. Additionally, these parties are required to complete the modifications before the specified deadline to remain compliant with the regulation. Failure to adhere to these obligations could result in the aeroplane being deemed non-airworthy, potentially leading to operational restrictions or grounding. Breach of these regulations can result in significant consequences. Civil penalties may be imposed for non-compliance, including fines and potential legal action. The severity of these penalties can vary depending on the nature and extent of the breach. Additionally, any aeroplane found to be non-compliant with the seat restraint modification requirements may face operational restrictions or be prohibited from flying until the necessary modifications are made. In extreme cases, persistent non-compliance could lead to the revocation of the aeroplane’s airworthiness certificate, which would prevent it from being operated in Australian airspace altogether. The specific penalties are not detailed in the provided text, but they can be substantial and are intended to ensure the highest standards of safety in civil aviation.