AD/ROBIN/18 - Shoulder Harness Installation

Overview

The Civil Aviation Regulations 1998, as part of the broader legislative framework governing civil aviation in Australia, were enacted to ensure the safety and efficiency of civil aviation activities within the country. Specifically, Part 39 - 105, which pertains to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, aims to establish and enforce mandatory safety standards for aircraft and their operation. The Airworthiness Directive AD/ROBIN/18, introduced in 1994, addresses a safety concern related to the installation of shoulder harnesses in Robin Aviation Series Aeroplanes, particularly the HR 100/200B models. This directive was enacted by CASA to mitigate the risk of spinal injuries during a crash landing by ensuring that shoulder harnesses are correctly installed at an optimal angle. The directive requires compliance by a specified date and references FAA Advisory Circular 21-34 for acceptable installation practices, underscoring the regulatory intent to enhance occupant safety during aircraft operations.

Scope and Application

The Civil Aviation Safety Authority (CASA) has issued an Airworthiness Directive (AD) under the Civil Aviation Regulations 1998, specifically targeting the Robin Aviation Series Aeroplanes. The directive AD/ROBIN/18 pertains to the installation of shoulder harnesses in HR 100/200B model aircraft. This legislation applies to aircraft owners and operators who possess or operate these specific models and mandates the installation of shoulder harnesses in each front seat, adhering to a design that CASA has approved. The directive underscores the importance of ensuring the shoulder straps form an angle between 5 degrees below and 30 degrees above the aircraft's longitudinal axis when worn by the occupant. This requirement aims to mitigate the risk of spinal compression during a crash landing, a critical safety enhancement highlighted in FAA Advisory Circular 21-34. Compliance with this directive was required prior to 23 December 1994, and any deviation may result in regulatory action under the authority granted by the Commonwealth of Australia.

Key Provisions

The Civil Aviation Regulations 1998, Part 39 - 105, specifically addresses the airworthiness directives for the Robin Aviation Series Aeroplanes, with the directive AD/ROBIN/18 focusing on shoulder harness installation (Section 1). This directive applies to HR 100/200B models and mandates the installation of a shoulder harness in each front seat if one is not already present. The installation must conform to a design acceptable to the Civil Aviation Safety Authority (CASA) and ensure that the shoulder straps are positioned at an angle between 5 degrees below and 30 degrees above the aircraft's longitudinal axis once they pass over the occupant’s shoulder (Section 2). Guidance for acceptable harness installations can be found in FAA AC 21-34. Entities and individuals governed by this directive are required to comply with the installation specifications outlined in AD/ROBIN/18. This includes ensuring that the shoulder harness is installed correctly and that the specified angle is maintained, which is critical for occupant safety during a crash landing (Section 3). The directive underscores the importance of adhering to the specified design criteria to prevent spinal compression injuries that could result from improper harness placement. Failure to comply with the provisions of AD/ROBIN/18 may result in significant legal consequences. The Civil Aviation Regulations 1998 impose penalties for non-compliance, which can include both civil and criminal sanctions (Section 4). Civil penalties may involve fines, while criminal penalties can result in imprisonment, reflecting the seriousness of the directive in maintaining airworthiness standards (Section 5). The exact penalties are not specified in the directive but are determined under the broader regulatory framework of the Civil Aviation Act 1988 and related regulations.