Overview

The Civil Aviation Regulations 1998, as amended, are central to ensuring the safety and compliance of aviation operations in Australia. This piece of legislation was enacted to provide a comprehensive regulatory framework that governs all aspects of civil aviation, including aircraft operations, maintenance, and airworthiness. The regulations are intended to address the need for consistent, enforceable standards that safeguard the public and ensure the safety of aircraft in Australian airspace. The Civil Aviation Regulations 1998 are administered by the Civil Aviation Safety Authority (CASA), an agency established under the Civil Aviation Act 1988. The overarching policy objective of these regulations is to maintain and enhance the safety of civil aviation through stringent and clear standards that are regularly updated to reflect technological advancements and emerging safety concerns. One specific legislative instrument under these regulations is the Airworthiness Directive (AD) concerning the Beechcraft 90 and 65-90 (King Air) series aeroplanes, specifically AD/BEECH 90/93. This directive was introduced following an incident where a Beechcraft aeroplane lost control due to wiring entanglement with the flight control system. The directive mandates an inspection for potential interference or inadequate clearance between the flight control mechanism and components located forward of the instrument panel, as well as corrective actions if such issues are found. Compliance with this directive is crucial to prevent similar incidents, thereby enhancing aviation safety and ensuring the airworthiness of the affected aircraft.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, which govern the safety standards for aircraft operation within Australia. One such directive, AD/BEECH 90/93, targets the inspection for flight control interference with wiring in specific models of the Beechcraft 90 and 65-90 (King Air) series aeroplanes. This directive applies to aircraft within the specified serial number range, mandating inspections to ensure there is no interference or inadequate clearance between the flight control mechanisms and any components located forward of the instrument panel. The requirement entails inspecting for such issues in accordance with a specified Raytheon Service Bulletin and securing components if necessary. Notably, if certain safety communiqués have already been implemented, additional action is not required. The directive applies to aircraft operating within the Commonwealth of Australia and requires compliance within a specified timeframe following the directive's effective date of 19 May 1999. The directive is enforceable and does not explicitly mention exclusions or exemptions, although the specific circumstances of individual aircraft may be subject to further regulatory scrutiny or interpretation by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, Section 105, mandates inspections and corrective actions for certain Beechcraft 90 and 65-90 (King Air) series aeroplanes to ensure airworthiness. Under Section 105, the Airworthiness Directive AD/BEECH 90/93 requires an inspection for potential interference or inadequate clearance between the flight control mechanism and any components located forward of the instrument in the specified model and serial numbers (Section 1). This inspection is mandatory unless it has already been performed. If such interference or inadequate clearance is detected, all components must be secured away from the flight control mechanisms as per Raytheon Mandatory Service Bulletin 27-3232 dated March 1999 (Section 2). The directive notes that if Raytheon Safety Communiqué No 149 dated August 1998 or its revision dated November 1998 has been carried out, no further action is necessary. The directive also refers to FAA AD 99-09-15 for additional context (Note 1 and Note 2). Compliance with this directive is obligatory for the specified aircraft within 25 hours of time in service after 19 May 1999, and before any further flight following the inspection (Compliance 1 and 2). The directive became effective on 19 May 1999, highlighting the urgency and importance of adhering to these safety measures. The background of this directive stems from an incident involving a Raytheon Beech Model 1900 aeroplane where temporary loss of aileron and elevator control occurred due to electrical/avionics wiring entanglement with the flight control system “T” column. The obligations imposed by this legislation are clear and specific: operators and owners of the affected aircraft must ensure that the mandated inspections are performed by qualified personnel and that any identified issues are rectified promptly to maintain airworthiness. Failure to comply with these directives could result in severe operational restrictions or grounding of the affected aircraft, potentially leading to significant financial and operational repercussions. Moreover, non-compliance may also invite scrutiny and enforcement action from the Civil Aviation Safety Authority, which could include fines or other regulatory penalties.