COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes
AD/AC/43 Elevator Servo Cable Guard Plate - Installation 9/70
Applicability: Models 500S and 500U S/Nos. 1531 to 3085 and 3087 equipped with Mitchell Century III Autopilot System.
Document: Aero Commander SL 223.
Compliance: Within 300 hours’ time in service after 30 September 1970.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Parliament, address the need for stringent safety standards in civil aviation. Specifically, Part 39 - 105 pertains to the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, which includes AD/AC/43 concerning the installation of elevator servo cable guard plates on certain Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600, and 700) series aeroplanes. This legislative instrument was introduced to mitigate safety risks associated with the elevator servo cable system in specified models, ensuring that such aircraft meet the required safety benchmarks. The policy objective is to mandate specific compliance actions to enhance the safety of these aircraft types in Australian airspace.
The document outlines the applicability of this directive to Models 500S and 500U with specific serial numbers, which must comply with the installation requirements within 300 hours of service after 30 September 1970. The directive references Aero Commander SL 223, detailing the necessary compliance measures to address potential safety issues related to the elevator servo cable system. This regulation aims to ensure that these aircraft continue to operate within acceptable safety parameters, thereby protecting passengers and crew.
Scope and Application
The Civil Aviation Regulations 1998, as specified in Part 39 - 105, pertain to the installation of an elevator servo cable guard plate on certain models of Twin Commander aeroplanes. This regulation applies to specific Gulf Stream/Rockwell/Aerocommander 500, 600, and 700 series aircraft, particularly those models 500S and 500U with serial numbers ranging from 1531 to 3085 and 3087, which are equipped with the Mitchell Century III Autopilot System. The directive mandates compliance within 300 hours of time in service following 30 September 1970. This regulation is part of a broader framework overseen by the Civil Aviation Safety Authority, ensuring that these aircraft meet stringent safety standards. The regulations extend across the Commonwealth of Australia, and while specific exclusions or exemptions are not detailed in the provided text, it is understood that the authority to issue subordinate instruments allows for modifications or extensions of this directive as necessary.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, detail the Airworthiness Directives (ADs) that govern the safety and maintenance of various aircraft types. One such directive, AD/AC/43, pertains to the installation of an elevator servo cable guard plate on Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600, and 700) series aeroplanes (Section 105). This directive is crucial for ensuring the safety and integrity of the elevator servo cable system, which is integral to the aircraft's control.
Section 105 of the regulations requires the installation of a specific elevator servo cable guard plate on Twin Commander models 500S and 500U with serial numbers (S/Nos.) ranging from 1531 to 3085 and 3087, provided they are equipped with the Mitchell Century III Autopilot System. This installation must be completed within 300 hours of time in service after 30 September 1970. Compliance with this directive is essential for maintaining the airworthiness of the specified aircraft models.
Operators and owners of Twin Commander aeroplanes covered by this directive must ensure that the elevator servo cable guard plate is installed according to the specified timeframe. Failure to comply with this requirement can result in the aircraft being deemed unairworthy, which would prevent it from being operated until the necessary modifications are made. The regulations impose a clear obligation on these parties to verify that the required modifications are completed within the specified period, to maintain compliance with airworthiness standards.
Breach of the requirements stipulated in Section 105 of the Civil Aviation Regulations 1998 can result in significant consequences. The Civil Aviation Safety Authority (CASA) may take enforcement action against operators or owners who fail to comply with the airworthiness directive. This could include fines, suspension or revocation of the aircraft’s certificate of airworthiness, and potentially criminal charges if the non-compliance is deemed to have endangered safety. The specific penalties can vary, but they are intended to ensure that all aircraft meet the necessary safety standards to protect passengers and crew.