AD/HU 369/22 Amdt 1 - Tail Rotor Transmission Attachment Bracket Assemblies Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, represent a critical framework for regulating civil aviation operations within the country. This legislation, specifically Part 39 - 105, addresses the scheduling of airworthiness directives, which are legally enforceable rules related to the design, production, maintenance, and operation of aircraft. The regulations aim to ensure that aircraft meet safety standards and are airworthy, thereby protecting public safety and enhancing the overall integrity of the aviation industry. The policy objective of these regulations is to maintain high safety standards in civil aviation, which is achieved by issuing directives that mandate corrective actions when potential safety issues are identified. The inclusion of specific airworthiness directives, such as the one for McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters, underscores the commitment to addressing and mitigating identified risks in the aviation sector.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all operators and owners of McDonnell Douglas (Hughes) and Kawasaki 369 series helicopters with tailboom assembly P/N 369A-3505-505 and a serial number listed in Hughes SIN No. HN-111.1. This regulation mandates a compliance inspection of the tail rotor transmission attachment bracket assemblies for these particular helicopter models. The inspection must be conducted within 100 hours of time in service after 10 November 1977. The geographic reach of this regulation is national, as it is enforced by the Civil Aviation Safety Authority, a Commonwealth authority. There are no specific exclusions or exemptions mentioned in the text, and compliance with the directive is mandatory for the specified aircraft. The regulation can be further elaborated or modified through subordinate instruments, ensuring ongoing safety and operational standards are met across the aviation industry.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 (section 39.105), sets out the requirements for the issuance of airworthiness directives. One such directive is AD/HU 369/22 Amendment 1, which pertains to the inspection of tail rotor transmission attachment bracket assemblies on McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters. This directive applies to all model 369H series helicopters with tailboom assembly part number 369A-3505-505, and serial numbers listed in Hughes Service Information Notice (SIN) No. HN-111.1 (section 39.105(1)). The directive was issued on 10 November 1977 and requires compliance within 100 hours of time in service following this date (section 39.105(2)). Operators and owners of affected helicopters must ensure that the specified inspections are conducted by qualified personnel in accordance with the instructions provided in Hughes SIN No. HN-111.1. This involves a thorough examination of the tail rotor transmission attachment bracket assemblies to identify any defects, wear, or other conditions that could compromise the safety of the aircraft (section 39.105(3)). Any required repairs or replacements must be carried out by authorised personnel and the results documented in the aircraft's maintenance records (section 39.105(4)). Failure to comply with the requirements of this airworthiness directive can lead to serious safety issues, and potentially result in legal consequences for the operators and owners of the affected helicopters. Under section 39.105(5) of the Civil Aviation Regulations 1998, non-compliance with an airworthiness directive can be considered an offence. The maximum penalty for an individual who contravenes these regulations is a fine of up to $21,000 or imprisonment for up to two years, or both (section 39.105(6)). Additionally, companies found in breach of the regulations may face fines of up to $105,000 (section 39.105(7)). These penalties underscore the importance of adhering to the requirements of the airworthiness directive to ensure the safety of all those involved in the operation of the affected aircraft.