AD/HU 269/72 - Idler Pulley Support Bracket - Inspection

Overview

The Civil Aviation Regulations 1998, as amended by the legislative instrument F2006B10632, were enacted to ensure the safe operation of civil aviation within Australia. This particular legislative instrument introduces an Airworthiness Directive (AD) concerning Schweizer (Hughes) 269 Series Helicopters. The directive was issued by the Civil Aviation Safety Authority (CASA), the body responsible for regulating civil aviation safety in Australia. The problem this AD aims to address is the reported instances of cracking in the idler pulley support brackets of the specified helicopter models, which could potentially compromise the safety of flight operations. The policy objective of the directive is to mitigate the risk of such failures by mandating regular inspections of the affected components, thereby enhancing overall aviation safety. This directive applies to all Schweizer (Hughes) 269 Series Helicopters equipped with the P/N 269A5447 series belt drive idler pulley assembly, referencing Hughes Service Information Notice N-182 and FAA AD 82-15-03. Operators are required to inspect the idler pulley support brackets at intervals not exceeding 100 hours of time in service after 30 September 1982. The directive ensures that identified issues are promptly addressed, thereby reducing the likelihood of in-flight failures and maintaining high safety standards in civil aviation.

Scope and Application

The Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives under the Civil Aviation Regulations 1998 specifically addresses the safety and compliance requirements for the Schweizer (Hughes) 269 Series Helicopters, particularly with regard to the idler pulley support bracket. This directive applies to all models of the Schweizer (Hughes) 269 Series helicopters that are equipped with the P/N 269A5447 series belt drive idler pulley assembly. The directive mandates that inspections must be carried out at intervals not exceeding 100 hours of time in service after 30 September 1982, following documented procedures such as Hughes SIN N-182. This directive is influenced by the Federal Aviation Administration's AD 82-15-03, which underscores the importance of regular inspections due to reported cases of cracking in the idler pulley support brackets. The directive is a Commonwealth regulation, enforcing compliance with safety standards across the national airspace managed by CASA, and no specific exclusions or exemptions are mentioned in the provided text.

Key Provisions

The Civil Aviation Regulations 1998, Part 39, under the authority of the Civil Aviation Safety Authority (CASA), mandate specific airworthiness directives for various aircraft types. For the Schweizer (Hughes) 269 Series Helicopters, the directive AD/HU 269/72 specifies an inspection requirement for the idler pulley support bracket (section 105). This directive applies to all models equipped with the P/N 269A5447 series belt drive idler pulley assembly (section 9/82). The inspection is required at intervals not exceeding 100 hours of time in service after 30 September 1982, following the reported instances of cracking in the idler pulley support brackets. The directive imposes clear obligations on the owners and operators of Schweizer (Hughes) 269 Series Helicopters. They must ensure that the idler pulley support brackets are inspected according to the specified intervals to maintain airworthiness. This requirement is intended to prevent potential failures that could compromise the safety of the aircraft. Compliance with these inspections is crucial, as it directly impacts the operational safety of the helicopter. Failure to comply with the requirements set out in AD/HU 269/72 can lead to significant consequences. The regulations stipulate that non-compliance could result in the aircraft being deemed unairworthy. This, in turn, could lead to enforcement actions by CASA, including fines and potential criminal charges for operators who neglect their inspection duties. The specific penalties and consequences are outlined in the broader Civil Aviation Regulations 1998, which detail the enforcement mechanisms and sanctions for non-compliance with airworthiness directives.