Overview

The Civil Aviation Regulations 1998, which were enacted by the Parliament of Australia, establish safety standards and procedures for the aviation industry, including specific directives for maintaining aircraft airworthiness. The legislation aims to ensure the safety and reliability of aircraft in Australian airspace, addressing potential gaps in aviation safety compliance. A notable example is Part 39 - 105, which pertains to the Civil Aviation Safety Authority's schedule of airworthiness directives for various aircraft types. One such directive, AD/S-76/13, specifically targets the Sikorsky S-76 series helicopters to mandate inspections of the tail rotor outboard retaining plate bolts. This directive was introduced to address the identified risk of defects in the bolts' head to shank radius, which could compromise the structural integrity and safety of the aircraft. The policy objective behind such regulations is to proactively manage and mitigate aviation risks through regular inspections and maintenance as specified by the manufacturer.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 105 under the Civil Aviation Safety Authority (CASA) schedule of airworthiness directives, applies to Sikorsky S-76 series helicopters with specific serial numbers. This legislation mandates that all models of the S-76 with serial numbers ranging from SS 76005 to 76007, and from SS 760001 to 760050, must comply with the requirements set forth in Sikorsky CSB 76-65-11. The legislation ensures the inspection of tail rotor outboard retaining plate bolts to mitigate potential defects in the head to shank radius, which could compromise the safety of the aircraft. The directive is applicable across the Commonwealth of Australia, thereby covering all states and territories under the jurisdiction of CASA. This legislation does not specify exclusions or exemptions but mandates compliance within 100 hours of time in service after 30 September 1980. The application of this directive can be extended or refined through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, include provisions governing airworthiness directives for various aircraft types, including the Sikorsky S-76 series helicopters. In this context, AD/S-76/13 addresses the inspection of tail rotor outboard retaining plate bolts (Section 39.105). The directive applies to all models S-76 with specific serial numbers (SS 76005 to 76007 and SS 760001 to 760050) and mandates compliance with the instructions outlined in Sikorsky CSB 76-65-11. The requirement is for these inspections to be completed within 100 hours of time in service after 30 September 1980. These regulations impose certain obligations on the operators of the specified S-76 helicopters. Operators must ensure that the inspections of the tail rotor outboard retaining plate bolts are conducted within the stipulated timeframe. This involves examining the bolts for any defects, particularly in the head to shank radius, as identified by the manufacturer. The directive necessitates that operators maintain accurate records of the inspections and any remedial actions taken. Operators must also ensure that the helicopters remain airworthy and comply with all relevant safety standards throughout the inspection process. Failure to comply with the airworthiness directive AD/S-76/13 may result in several consequences. Non-compliance could potentially lead to safety risks, as the directive aims to address known defects in the tail rotor outboard retaining plate bolts. Operators who fail to adhere to the inspection requirements may face penalties under the Civil Aviation Act 1988, including fines and potential grounding of the affected aircraft. The specific penalties and consequences for non-compliance are detailed in the Civil Aviation Regulations 1988, which may include substantial fines and other regulatory actions to enforce compliance. The exact penalties are not detailed within the airworthiness directive itself but are governed by the overarching aviation regulations.