Overview

The Civil Aviation Regulations 1998 were enacted to establish a comprehensive regulatory framework for civil aviation in Australia, ensuring safety and efficiency within the aviation industry. One particular aspect of this legislation is the Airworthiness Directives, which are mandatory orders issued by the Civil Aviation Safety Authority (CASA) to address specific safety issues within the aviation sector. The problem or gap these directives address is the need to maintain and ensure the ongoing airworthiness of aircraft, specifically by identifying and mitigating potential safety hazards. The policy objective behind these directives is to enhance aviation safety by requiring regular inspections and maintenance actions on aircraft components, such as the elevator connecting rods for DHC-6 (Twin Otter) Series Aeroplanes, as outlined in AD/DHC-6/21 Amendment 1. The Civil Aviation Regulations 1998, administered by the Commonwealth of Australia through CASA, introduce these Airworthiness Directives to provide clear, enforceable guidelines for the maintenance and inspection of aircraft. This ensures that all operators comply with the necessary safety standards, thus protecting the public and maintaining the integrity of the Australian civil aviation system. The regulations aim to address any identified safety concerns promptly and effectively, ensuring that aircraft remain airworthy and safe for operation.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to airworthiness directives issued by the Civil Aviation Safety Authority (CASA) concerning the DHC-6 (Twin Otter) series aeroplanes. This legislative instrument applies to all models within the DHC-6 series, mandating that all elevator connecting rods must be inspected according to the method specified in De Havilland Aircraft of Canada Service Bulletin No. 6/238. This inspection requirement applies regardless of the batch number of the connecting rods, except for those rods that have already undergone a detailed inspection. The directive must be complied with within 25 hours of the aeroplane being in service after 14 February 1972. This regulation extends to all operators of DHC-6 aeroplanes within Australia, ensuring a standardised approach to the maintenance and safety of these aircraft across the country.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), particularly Part 39 - 105, which focuses on the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, include specific requirements for DHC-6 (Twin Otter) Series Aeroplanes. One of these is AD/DHC-6/21 Amendment 1, which pertains to the inspection of elevator connecting rods (section 2/72). The directive applies to all models of DHC-6 aeroplanes, necessitating a thorough inspection of the elevator connecting rods, regardless of the batch number. This inspection must be conducted using the method detailed in De Havilland Aircraft of Canada Service Bulletin No. 6/238, with the exception of those rods that have already undergone a detailed inspection. These regulations impose clear obligations on aircraft operators and maintenance personnel. Specifically, they require the inspection of elevator connecting rods within 25 hours of time in service after 14 February 1972. The directive mandates that these inspections must adhere to the method prescribed by De Havilland Aircraft of Canada Service Bulletin No. 6/238, ensuring that the inspection criteria are met to maintain the airworthiness of the aircraft. Operators must ensure that all personnel conducting these inspections are properly trained and certified, and that the inspection process is thoroughly documented. Failure to comply with the requirements set out in AD/DHC-6/21 Amendment 1 can lead to significant legal and safety repercussions. The Civil Aviation Regulations 1998 (Cth) provide for both civil and criminal penalties for non-compliance with airworthiness directives. In this case, if an operator fails to conduct the mandated inspections within the specified timeframe, they could be subject to enforcement actions by CASA. Potential consequences include fines, enforcement notices, or even the suspension or revocation of the aircraft's certificate of airworthiness. Such outcomes not only impose financial penalties but also risk the safety of the aircraft's operations and the well-being of its passengers and crew.