Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, was introduced to ensure the safety of civil aviation within the country. The regulations cover a wide range of areas, including airworthiness directives, which are essential in addressing specific safety concerns that may arise over time. One such airworthiness directive, AD/DHC-8/79, was issued to address the issue of understrength retention systems for the upper wardrobe shelf in Bombardier (Boeing Canada/de Havilland) DHC-8 Series Aeroplanes, Models 102, 103, 106, 201, 202, 301, 311, 314, and 315, with certain serial numbers. This directive was issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Regulations 1998, aiming to prevent potential separation of the wardrobe shelf and attached equipment in the event of an accident or emergency landing. The policy objective of this airworthiness directive is to ensure that the necessary action is taken to maintain the safety and airworthiness of the affected aircraft models.

Scope and Application

The Airworthiness Directive (AD) outlined in the Civil Aviation Regulations 1998 applies specifically to Bombardier (Boeing Canada/de Havilland) DHC-8 Series aeroplanes, encompassing models 102, 103, 106, 201, 202, 301, 311, 314, and 315, and those with particular serial numbers: 452, 464, 490, 506, 508 through 531, and 535. The directive mandates that the wardrobe attachment be reinforced by incorporating Modsum 8Q900268, as instructed in Bombardier Service Bulletin 8-25-311, in order to rectify an understrength retention system that could potentially lead to the wardrobe shelf and attached equipment detaching during an accident or emergency landing. This AD is issued by a delegate of the Civil Aviation Safety Authority under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 and is effective from 9 August 2001, with compliance required before 15 June 2002. This directive is applicable within the Commonwealth of Australia and is intended to ensure the safety of the specified aircraft models.

Key Provisions

The Airworthiness Directive (AD) AD/DHC-8/79 pertains to specific Bombardier (Boeing Canada/de Havilland) DHC-8 Series aeroplanes, including Models 102, 103, 106, 201, 202, 301, 311, 314, and 315, with serial numbers 452, 464, 490, 506, 508 through 531, and 535 (section 1). The directive mandates the reinforcement of the wardrobe attachment by incorporating Modsum 8Q900268 as per the instructions in Bombardier Service Bulletin 8-25-311 (section 2). This requirement aims to address an identified safety issue where the retention system for the upper wardrobe shelf was found to be under strength, which could lead to the wardrobe shelf and its attachments coming loose during an accident or emergency landing (section 3). The directive became effective on 9 August 2001, and compliance was required before 15 June 2002 (section 4). The AD imposes specific obligations on the parties involved, primarily aircraft operators and maintenance providers, to ensure the safety measures outlined in the directive are implemented. Operators of the affected DHC-8 aircraft must ensure that the required reinforcement of the wardrobe shelf attachment is carried out before the specified compliance date. This involves following the instructions detailed in Bombardier Service Bulletin 8-25-311 and ensuring that the Modsum 8Q900268 is correctly incorporated into the aircraft's structure (section 5). Maintenance providers, on the other hand, must perform the necessary modifications and ensure that the aircraft meet the safety standards set by the AD. This includes verifying that all steps in the reinforcement process are completed accurately and that the aircraft is inspected post-modification to confirm compliance (section 6). Failure to comply with the requirements of this Airworthiness Directive can result in serious consequences. Non-compliance with ADs is considered a breach of the Civil Aviation Regulations 1998, which govern aircraft operations and maintenance in Australia. Such breaches can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). The penalties for non-compliance can be substantial, including fines and potential grounding of the aircraft until the required modifications are completed (section 7). The maximum penalties for contravening the Civil Aviation Regulations 1998 can include fines of up to $21,600 for individuals and $108,000 for corporations, in addition to other possible enforcement actions by CASA (section 8). These penalties underscore the importance of adhering to the AD to ensure the continued airworthiness and safety of the aircraft in question.