AD/BEECH 90/90 - Leading Edge Fuel Tanks

Overview

The Civil Aviation Regulations 1998, as amended by the Legislative instrument F2006B04273, were enacted to address safety issues in civil aviation, particularly concerning the airworthiness of aircraft. This particular legislative instrument pertains to the Beechcraft 90 and 65-90 (King Air) series aeroplanes, focusing on leading edge fuel tanks through Airworthiness Directive AD/BEECH 90/90. The directive was introduced to rectify the problem of misalignment in the fuel line which has led to the cracking of fuel cell nipples, a condition that could result in fuel leaks and potential aircraft fires. The enactment by the Commonwealth of Australia aims to ensure compliance with safety standards, as outlined in the Beechcraft Mandatory Service Bulletin No 2475, to mitigate such risks within the specified aircraft models. The Civil Aviation Safety Authority, under the authority of the Commonwealth Parliament, implemented this directive to enforce adherence to specific maintenance actions unless they have already been performed within 150 hours of time in service from 11 November 1993. The policy objective is to enhance the safety of air travel by ensuring that all affected aircraft are inspected and maintained according to the prescribed guidelines to prevent potential hazards associated with fuel system failures.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to the operation and maintenance of all Beechcraft 90, C90, and C90A aircraft with serial numbers ranging from LJ-489 to LJ-1318 inclusive. This regulation pertains to the safety and airworthiness of these specific aircraft models, mandating compliance with Beechcraft Mandatory Service Bulletin No 2475 to address issues related to misalignment of the fuel line that may cause cracking of the fuel cell nipples. The requirement necessitates corrective action to prevent potential fuel leaks, which could lead to catastrophic outcomes such as aircraft fires. The scope of the regulation is geographically broad, applying across all states and territories of Australia, as it falls under the Commonwealth's regulatory purview. The regulation mandates compliance unless the specified action has already been completed within 150 hours of time in service from 11 November 1993. This regulation underscores the importance of stringent maintenance protocols to ensure the safety and operational integrity of these aircraft within Australia's aviation sector.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39, Section 105, include detailed directives concerning the airworthiness of various aircraft models, such as the Beechcraft 90 and 65-90 (King Air) series aeroplanes. One such directive, AD/BEECH 90/90, pertains to the leading edge fuel tanks of these aircraft (Section 1). This directive mandates that the action specified in Beechcraft Mandatory Service Bulletin No 2475 must be undertaken (Section 1). It is crucial to note that compliance with this directive is referenced in FAA AD 93-17-01, amendment 39-8671 (Section 1). The applicability of this directive is clear: it applies to all B90, C90, and C90A aircraft with serial numbers ranging from LJ-489 to LJ-1318 inclusive (Section 2). The requirement under this directive is that corrective action must be taken unless it has already been performed within the preceding 150 hours of time in service from the effective date of 11 November 1993 (Section 2). This requirement aims to address a specific safety issue identified in the Beechcraft 90 and 65-90 series aeroplanes, namely the misalignment of the fuel line which can lead to cracking of the fuel cell nipples (Section 2). Entities governed by this Act must ensure that all specified aircraft undergo the necessary inspection and corrective actions to rectify any misalignment and subsequent damage to the fuel cell nipples. Failure to comply with these directives could result in significant safety hazards, including potential fuel leaks and the risk of aircraft fire (Section 2). The obligations placed on these entities include the meticulous implementation of the corrective measures outlined in the Beechcraft Mandatory Service Bulletin No 2475, ensuring that all affected aircraft are maintained in a safe and airworthy condition (Section 2). Breaches of the directives specified in the Civil Aviation Regulations 1998 can lead to severe consequences. Civil penalties can be imposed for non-compliance, and in more serious cases, criminal charges may be brought against responsible parties. The exact penalties can vary, but they can include fines and, in some instances, imprisonment. The potential civil penalty for non-compliance with airworthiness directives can be substantial, reflecting the critical nature of maintaining aircraft safety (Section 3). It is imperative for entities and individuals to adhere to these regulations to avoid the serious ramifications associated with non-compliance.