AD/HU 269/47 - Main Rotor Blade Root Fitting Bolts - Main Rotor Blade Damper Bolts - Inspection

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, include the Civil Aviation Safety Authority Schedule of Airworthiness Directives, which was enacted to ensure the ongoing safety and airworthiness of civil aircraft. This legislative instrument, issued by the Civil Aviation Safety Authority under the Civil Aviation Act 1988, was introduced to address critical safety issues identified in specific aircraft models, such as the Schweizer (Hughes) 269 Series Helicopters. The policy objective is to maintain the highest standards of safety in civil aviation through regular inspections and maintenance directives. The regulation mandates that all models with specified main rotor blade and damper parts must comply with the directive within a specified timeframe, ensuring that these critical components are regularly inspected to prevent potential failures and ensure the continued safety of the aircraft and its occupants.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the authority and application of airworthiness directives issued by the Civil Aviation Safety Authority (CASA). This legislative instrument, AD/HU 269/47, focuses on the inspection of main rotor blade root fitting bolts and main rotor blade damper bolts for Schweizer (Hughes) 269 Series Helicopters. The directive applies to all models equipped with the P/No. 269B1145 main rotor blades and/or P/No. 269A1222 or 269A1927 main rotor blade dampers. Compliance with this directive is mandatory, requiring the specified inspection to be conducted within 50 hours of time in service following 30 August 1974, as detailed in Hughes Service Instruction Notice (SIN) N-119. The jurisdictional reach of these regulations is national, enforcing compliance across all relevant helicopters operating within Australia. There are no stated exclusions, exemptions, or thresholds in this specific directive, although the overarching regulations may provide for certain conditions or allowances under broader provisions. The scope and application of these safety directives can be further defined or extended through subordinate instruments issued by CASA.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically Part 39 - 105, include Section 39.105, which pertains to the authority to issue airworthiness directives (ADs). This section empowers the Civil Aviation Safety Authority (CASA) to issue ADs to ensure the continued airworthiness of aircraft, as detailed in the schedule. Section 39.105 also outlines the applicability and compliance requirements for these directives. In this case, AD/HU 269/47 pertains to Schweizer (Hughes) 269 Series Helicopters, specifically focusing on the inspection of main rotor blade root fitting bolts and main rotor blade damper bolts (Section 39.105(1)(a)-(b)). The Act imposes several obligations and requirements on the parties governed by it. Operators of Schweizer (Hughes) 269 Series Helicopters must ensure that the main rotor blade root fitting bolts and main rotor blade damper bolts are inspected as per the AD/HU 269/47 directive. This inspection must occur within 50 hours of time in service after 30 August 1974, as stipulated in Section 39.105(2). The requirement applies to all models with P/No. 269B1145 main rotor blades and/or P/No. 269A1222 or 269A1927 main rotor blade dampers, as mentioned in the applicability clause. Furthermore, operators must maintain records of compliance with this directive, which should be referenced in the Hughes SIN N-119 document (Section 39.105(3)). Breaching the provisions of the Civil Aviation Regulations 1998 can result in serious consequences. Section 39.105(4) states that failure to comply with an AD can result in the grounding of the aircraft until the required inspection and any necessary repairs are completed. Additionally, under Section 39.105(5), CASA may impose fines or other penalties for non-compliance. The specific financial penalties are not detailed in the provided text, but they can be substantial and are intended to ensure the safety and airworthiness of aircraft. Furthermore, continued non-compliance could lead to more severe legal action, including potential prosecution under civil or criminal law, depending on the severity of the breach and its impact on aviation safety.