AD/BEECH 300/11 - Main Landing Gear Clevis Assembly

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to ensure the safety and efficiency of civil aviation in Australia. Part 39 - 105, specifically, includes airworthiness directives that address safety issues identified in various aircraft models. One such directive is AD/BEECH 300/11 concerning the Beechcraft 300 Series Aeroplanes, which was introduced to address the problem of main landing gear failures due to fatigue cracking of the original clevis assembly design. This directive was established to mitigate the risk of loss of control during landing operations and was made effective on 28 January 1999. Compliance with the directive is mandatory for aircraft models and serial numbers specified in Raytheon Aircraft Mandatory Service Bulletin 2728, requiring the replacement of the main landing gear actuator clevis assembly within 200 hours of service after the directive's effective date.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, apply to the Beechcraft 300 Series aeroplanes identified by their models and serial numbers as listed in Raytheon Aircraft Mandatory Service Bulletin (MSB) 2728. The legislation pertains to aircraft manufacturers, operators, and maintenance service providers within the Commonwealth of Australia, necessitating compliance with safety directives issued by the Civil Aviation Safety Authority (CASA). This directive mandates that the left and right main landing gear actuator clevis assembly be replaced with an improved design, as outlined in Raytheon Aircraft MSB 2728 or MSB 2728 Revision 1. The directive became effective on 28 January 1999, and compliance is required unless the specified action has already been undertaken, within 200 hours of time in service after the directive's effective date. This regulation does not specify exclusions or exemptions but aims to mitigate risks associated with the fatigue cracking of the original design part, which could lead to severe operational hazards.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, contains AD/BEECH 300/11, which pertains to the main landing gear clevis assembly of Beechcraft 300 Series Aeroplanes (section 1). This directive applies to the models and serial numbers listed in Raytheon Aircraft Mandatory Service Bulletin (MSB) 2728. The primary requirement is to replace the left and right main landing gear actuator clevis assembly with a design that has been improved, as outlined in the Accomplishment Instructions section of MSB 2728 or MSB 2728 Revision 1 (section 2). This change is in reference to FAA AD 98-21-35 Amendment 39-10843 (section 3). The directive imposes specific obligations on the operators of affected aircraft. Operators must ensure compliance with the directive by replacing the specified components within 200 hours of time in service following 28 January 1999, unless the replacement has already been performed (section 4). This requirement is intended to address the potential failure of the main landing gear actuator clevis assembly due to fatigue cracking, which could result in a loss of control during landing operations. The directive became effective on 28 January 1999, marking the commencement date for compliance (section 5). Failure to comply with the AD/BEECH 300/11 directive could result in significant consequences. Non-compliance with airworthiness directives is a serious matter under aviation law, as it directly impacts the safety of aircraft operations. Although specific penalties for non-compliance are not detailed in this directive, general provisions within the Civil Aviation Regulations 1998 could impose fines and other civil penalties. Additionally, severe non-compliance may lead to criminal charges, including imprisonment, particularly if the non-compliance results in an aviation accident or incident. The exact penalties would depend on the specific circumstances and the discretion of the court.