AD/BEECH 99/1 - Elevator Spar - Inspection and Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, include provisions aimed at ensuring the safety of civil aviation operations within the country. Part 39 - 105, in particular, pertains to airworthiness directives which are critical for maintaining the safety standards of aircraft. One such directive, AD/BEECH 99/1, focuses on the inspection and modification of elevator spars in Beechcraft 99 Series Aeroplanes to address specific structural concerns. This directive was introduced to mitigate the risk of cracking at the outboard hinge bracket of low-time spars, a problem identified through operational experience. The objective is to ensure that the rework detailed in the Beechcraft Service Instruction 0190-133 is implemented to maintain airworthiness and prevent potential safety hazards. Compliance with this directive is mandatory and became effective from 3 February 1994.

Scope and Application

The Civil Aviation Safety Authority (CASA) has issued Airworthiness Directive AD/BEECH 99/1, which applies to specific serial numbers of the Beechcraft 99 Series Aeroplanes, namely U-2 to U-10, U12 to U35, U37 to U60, U62 to U-65, U67, U68, U72 to U-87, and U-89. This directive mandates the inspection and modification of the elevator spar as per Beechcraft Service Instruction 0190-133 to address the issue of cracking observed at the outboard hinge bracket, which has occurred during operation. The directive became effective on 3 February 1994, and compliance is mandatory for the specified aircraft within the Australian jurisdiction. The directive applies to both individual and corporate operators of the affected aircraft, ensuring that all necessary inspections and modifications are carried out to maintain the airworthiness of these aircraft. The directive extends its reach across the Commonwealth of Australia, enforcing strict adherence to the outlined requirements to enhance safety in civil aviation.

Key Provisions

The Civil Aviation Regulations 1998, particularly Part 39 - 105, contains an airworthiness directive (AD) that specifically applies to Beechcraft 99 Series aeroplanes. The directive, AD/BEECH 99/1, addresses the inspection and modification of the elevator spar (section 2/94). This directive applies to aircraft with specific serial numbers, including U-2 through U-10, U12 through U-35, U-37 through U-60, U-62 through U-65, U-67, U-68, U-72 through U-87, and U-89 (section 2/94). The requirement is to adhere to the specifications outlined in Beechcraft Service Instruction 0190-133. This directive became effective on 3 February 1994, making compliance mandatory from that date (section 2/94). Under this legislation, the obligations imposed on the parties and entities governed by these regulations are clear. Operators of the specified Beechcraft 99 Series aeroplanes must ensure that the elevator spar is inspected and modified as per the manufacturer's instructions in Beechcraft Service Instruction 0190-133. This involves conducting the necessary inspections to identify any potential cracking at the outboard hinge bracket and performing the specified rework if necessary. Such actions are critical to maintaining the airworthiness of the aircraft and ensuring the safety of all those on board. Failure to comply with the requirements set forth in AD/BEECH 99/1 can result in significant consequences. The regulations do not explicitly state the penalties for non-compliance in this directive, but generally, violations of the Civil Aviation Regulations can lead to severe civil or criminal penalties. Civil penalties can include fines, while criminal penalties may involve imprisonment, depending on the severity of the breach and its impact on aviation safety. The exact penalties would be determined based on the specific circumstances of the violation and the applicable sections of the Civil Aviation Act 1988 and other relevant legislation.