AD/F50/42 Amdt 1 - External Power Connection Relay Fitment

Overview

The Civil Aviation Regulations 1998, as amended, form a significant part of Australia's regulatory framework for ensuring the safety and efficiency of civil aviation. One of the amendments under Part 39 - 105, pertains to the Fokker F50 (F27 Mk 50) Series Aeroplanes and specifically addresses issues related to airworthiness directives. Enacted by the Australian Government, these regulations are intended to ensure that aircraft operating within Australian airspace meet necessary safety standards, thereby safeguarding both passengers and crew. The policy objective behind these regulations is to maintain and enhance the safety of civil aviation by setting and enforcing airworthiness standards, as well as responding to identified safety issues through timely directives. One specific example of such regulation is Airworthiness Directive AD/F50/42 Amendment 1, which targets a critical safety issue concerning the external power connection relay fitment in Fokker F50 aircraft. This directive was introduced to address the potential for serious damage to contactors and circuit breakers during ground power to aircraft power change-over, as highlighted in RLD Airworthiness Directive 90-137 dated 14 December 1990. The directive mandates compliance with the technical requirements specified in the requirement document and references Fokker Service Bulletin F50-24-015 dated 29 November 1990 to clarify compliance statements. This legislative instrument underscores the commitment of the Civil Aviation Safety Authority to proactively manage and mitigate aviation risks.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 – 105 concerning the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, applies to all Fokker F50 (F27 Mk 50) series aeroplanes as listed in the requirement document. This regulation mandates that all such aircraft must adhere to the technical requirements outlined in RLD Airworthiness Directive 90-137 dated 14 December 1990, and Fokker SB F50-24-015 dated 29 November 1990. The directive addresses the potential for serious damage to contactors and circuit breakers during ground power to aircraft power change-over, necessitating compliance as specified in the requirement document. This regulation extends its application across the Commonwealth of Australia, thereby affecting all entities operating within the Australian aviation industry that are responsible for the maintenance and operation of Fokker F50 aircraft. The directive does not specify any exclusions or exemptions, ensuring that all affected aircraft are subject to the mandated safety measures. Furthermore, the scope of application may be extended or clarified through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes a Schedule of Airworthiness Directives that apply to various types of aircraft, including the Fokker F50 (F27 Mk 50) Series Aeroplanes. One such directive is AD/F50/42 Amendment 1, which pertains to the fitment of an external power connection relay (Section 5). This directive applies to all F27 MK50 aircraft as identified in the requirement document (Section 5). The primary requirement is for the aircraft to meet the technical specifications outlined in the RLD Airworthiness Directive 90-137 dated 14 December 1990. Additionally, Fokker Service Bulletin F50-24-015 dated 29 November 1990 provides further reference for compliance (Section 5). Compliance with this directive must be achieved according to the specifications detailed in the requirement document (Section 5). The obligations imposed by this directive on the parties or entities it governs are clear and specific. Aircraft operators and owners must ensure that their Fokker F50 (F27 Mk 50) Series Aeroplanes are fitted with an external power connection relay in accordance with the technical requirements of RLD Airworthiness Directive 90-137. This involves implementing the necessary modifications as per the requirement document and Fokker Service Bulletin F50-24-015. Compliance must be verified and documented to demonstrate adherence to the regulatory standards set forth in the directive. Failure to comply with these obligations can result in significant safety risks and potential regulatory action. Failure to comply with the requirements of this airworthiness directive can result in serious consequences. The Civil Aviation Safety Authority (CASA) may take enforcement action against non-compliant aircraft operators and owners. This could include issuing penalties, grounding of the aircraft, or even revocation of the aircraft's certificate of airworthiness. While specific penalties are not detailed in the text, the potential for significant financial and operational repercussions underscores the importance of strict compliance. The severity of these consequences highlights the critical nature of adhering to airworthiness directives to ensure the safety and reliability of aircraft operations.