AD/HU 269/77 - Inertia Reel Shoulder Harness - Inspection

Overview

The Civil Aviation Regulations 1998, specifically within Part 39 - 105, address the safety standards and regulatory compliance for aircraft, operators, and maintenance. One of the directives outlined in this part pertains to Schweizer (Hughes) 269 Series Helicopters, focusing on the safety of inertia reel shoulder harnesses. This directive, AD/HU 269/77, was introduced to address the potential risks associated with the installation and operation of the inertia reel shoulder harness, particularly the 269A4262 assembly. The problem it was designed to mitigate includes the risk of inadequate restraint in an accident due to installation and operation issues reported by the manufacturer. The directive was enacted by the Commonwealth of Australia and aims to ensure that all affected helicopters and their spare parts comply with the specified safety standards to prevent potential hazards. The regulatory framework established by this directive is overseen by the Civil Aviation Safety Authority, which enforces the compliance requirements within the stipulated timeframe.

Scope and Application

The Civil Aviation Regulations 1998, as amended, apply to all helicopter models within the Schweizer (Hughes) 269 series, specifically the 269A, TH-55A, 269A-1, 269B, and 269C variants, that are equipped with the 269A4262 inertia reel shoulder harness assemblies, as well as any such harnesses in spares inventory. This regulation mandates compliance with Schweizer Service Information Notice N-194, which addresses potential issues with the inertia reel's installation and operation that could compromise restraint effectiveness in the event of an accident. The requirement necessitates an inspection within 100 hours of time in service following 31 May 1985, and similarly mandates that affected spare parts be inspected prior to installation. The regulations extend across the Commonwealth of Australia, overseen by the Civil Aviation Safety Authority, and are enforced uniformly to ensure the safety standards of civil aviation operations within the nation.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, contains Airworthiness Directives (AD) that are crucial for ensuring the safety of aircraft and their passengers. The AD/HU 269/77 pertains to Schweizer (Hughes) 269 Series Helicopters and mandates inspections for inertia reel shoulder harness assemblies. The directive applies to all model 269A, TH-55A, 269A-1, 269B and 269C helicopters that are equipped with 269A4262 inertia reel shoulder harness assemblies, as well as any harness assemblies held in spares inventory. The requirement is that these components must comply with Schweizer Service Information Notice N-194, and this compliance must be achieved within 100 hours of time in service after 31 May 1985. For affected spare parts, compliance must be ensured prior to their installation. The obligations imposed by this directive are clear and specific. Owners and operators of the affected helicopters must ensure that the inertia reel shoulder harness assemblies are inspected and, if necessary, repaired or replaced to meet the standards set out in Schweizer Service Information Notice N-194. This involves a thorough examination of the harnesses to identify any installation or operation problems that could compromise their effectiveness in an accident. Additionally, any harness assemblies in spares inventory must be inspected and brought up to the required standard before they are installed in an aircraft. Failure to comply with AD/HU 269/77 can have serious legal and safety implications. The Civil Aviation Regulations 1998 provide that non-compliance with an Airworthiness Directive can lead to enforcement actions. The specific consequences for breaching this directive could include fines, penalties, and potentially the grounding of the aircraft until the necessary inspections and repairs are completed. The maximum penalties for such breaches can be significant, reflecting the critical importance of adhering to safety standards to prevent accidents and ensure the safety of all persons on board the aircraft.