AD/DAUPHIN/2 - Tail Fin Ballast Weight - Installation

Overview

The Civil Aviation Regulations 1998, as amended by the Civil Aviation (Airworthiness) Amendment (Implementation of International Standards) Instrument 2006, introduced the necessity for specific airworthiness directives to ensure the safety of aircraft in operation. This legislative instrument aims to address the problem of excessive vibration in the tail boom rear section of the Eurocopter SA 360 and SA 365 (Dauphin) series helicopters, particularly those fitted with skid type landing gear. The policy objective, as enacted by the Australian Parliament, is to ensure compliance with international safety standards, thereby maintaining the highest levels of safety in civil aviation. The Civil Aviation Safety Authority (CASA) is the enforcing body responsible for implementing and overseeing adherence to these directives, ensuring that all affected aircraft meet the required safety benchmarks before certification.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, governs the applicability of airworthiness directives for various aircraft, including the Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters. This legislation mandates that all models SA 365C and 365C1 helicopters equipped with skid type landing gear must comply with Airworthiness Directive AD/DAUPHIN/2, which concerns the installation of tail fin ballast weight. This requirement is essential to reduce vibration levels in the tail boom rear section, ensuring the safety and airworthiness of the aircraft. The directive applies to all relevant aircraft within the scope mentioned and requires compliance before certification. The directive is geographically applicable within the Commonwealth of Australia, and its enforcement falls under the purview of the Civil Aviation Safety Authority. The regulations do not specify any exclusions, exemptions, or thresholds, but further details and extensions may be outlined in subordinate instruments issued by the relevant authorities.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39, Section 105, mandate the installation of a tail fin ballast weight for the Eurocopter SA 360 and SA 365 (Dauphin) Series helicopters, particularly those models SA 365C and 365C1 equipped with skid type landing gear. This directive, detailed in AD/DAUPHIN/2, requires compliance with Dauphin Service Bulletin No. 53.04. The main objective of this regulation is to mitigate vibration levels in the tail boom rear section of the specified helicopter models by ensuring the ballast weight is correctly installed prior to certification (Section 105). Operators and owners of the SA 365C and 365C1 Dauphin helicopters must adhere to the installation requirements set out in the Civil Aviation Regulations. This includes ensuring that the ballast weight is installed in accordance with the specifications and guidelines provided in Dauphin Service Bulletin No. 53.04. The installation must be completed and verified before the aircraft is certified as airworthy, which imposes a significant obligation on the operators to meticulously follow the prescribed procedures to avoid any non-compliance issues (Section 105). Failure to comply with the installation requirements of the tail fin ballast weight as stipulated in the Civil Aviation Regulations can lead to severe consequences. Non-compliance with these regulations could result in the aircraft being deemed unairworthy, which may lead to the grounding of the helicopter until the necessary modifications are made. Furthermore, operators who fail to adhere to these safety directives might face significant civil penalties. The exact penalties are not specified within the provided text, but generally, such non-compliance can lead to fines and other regulatory actions which could impact the operational status and reputation of the aviation company involved. It is crucial, therefore, for operators to ensure strict adherence to these regulations to avoid any legal repercussions.