AD/DH 82/8 - Seat Restraint Installations - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, addresses the safety and operational standards of civil aviation within the country. This legislation is overseen by the Civil Aviation Safety Authority (CASA) and includes provisions for airworthiness directives to ensure that aircraft meet the necessary safety standards. One such directive is AD/DH 82/8, which pertains specifically to the DH 82 (Tiger Moth) Series Aeroplanes, mandating the modification of each seat restraint installation to include a safety harness that meets the approval of the Secretary. This requirement aims to enhance the safety of the aircraft by ensuring that all occupants are securely restrained during flight, thus preventing injury in the event of an emergency or turbulence. The directive specifies that these modifications must be completed before 1 January 1974, unless already accomplished, and provides reference to Airworthiness Advisory Circular No. 62 dated March 1972 for guidance on the installation scheme.

Scope and Application

The Civil Aviation Regulations 1998, as amended, under Part 39 - 105, specifically address airworthiness directives pertaining to the DH 82 (Tiger Moth) series aeroplanes. This legislation mandates that all models of these aeroplanes must undergo a modification to their seat restraint installations, requiring the fitting of a safety harness. This requirement applies universally to all DH 82 series aeroplanes and must be adhered to by operators, owners, and maintenance personnel within the Commonwealth of Australia. Compliance with this directive is mandatory, and the modifications must be completed before 1 January 1974 unless they have already been performed. The Secretary's approval is necessary for the installation scheme, with guidelines provided in Airworthiness Advisory Circular No. 62 dated March 1972, ensuring a standardised approach to the modification process.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39, section 105, mandate modifications to the seat restraint installations for all models of the DH 82 (Tiger Moth) series aeroplanes. This requirement is outlined in the Airworthiness Directive AD/DH 82/8, which was issued on 11/72. The primary operative section (105) of this directive requires that each seat restraint installation must be modified by fitting a safety harness. This modification must conform to a scheme that has been approved by the Secretary. Guidance on the installation scheme can be found in Airworthiness Advisory Circular No. 62 dated March 1972. In terms of obligations, all operators of DH 82 (Tiger Moth) series aeroplanes must ensure that the seat restraint modifications are completed before 1 January 1974. This is a mandatory requirement that applies universally to all models within this series. Compliance with this directive is necessary to maintain the airworthiness of the aircraft and ensure the safety of all occupants on board. Failure to comply with the requirements set out in the Airworthiness Directive AD/DH 82/8 may lead to various civil and criminal consequences. The regulations are clear that non-compliance with airworthiness directives can result in severe penalties. Although the specific penalties are not detailed in this directive, it is understood that breaches of airworthiness regulations can lead to substantial fines, legal action, and potentially the grounding of the aircraft until the necessary modifications are made. The overarching principle is to ensure that the safety standards are upheld to prevent accidents and ensure the continued safe operation of the aircraft.