AD/MU-2/9 - Trim Aileron Bellcrank Bracket Bolt Holes - Inspection

Overview

The Civil Aviation Regulations 1998, as amended by the Legislative instrument F2006B11403, introduced specific directives to address the safety concerns associated with the Mitsubishi MU-2 Series Aeroplanes. This legislative instrument was enacted to ensure the continued airworthiness and safety of these aircraft, particularly focusing on the inspection of trim aileron bellcrank bracket bolt holes. The problem it aimed to address was the potential for structural failure in the specified area, which could compromise the aircraft's safety. The Australian Parliament authorised these regulations through the Civil Aviation Safety Authority, with the policy objective of maintaining stringent safety standards within the aviation industry and protecting the public from aviation-related hazards. The Mitsubishi MU-2 Series Aeroplanes Airworthiness Directive (AD/MU-2/9) mandates a thorough inspection of the trim aileron bellcrank bracket bolt holes within 50 hours of time in service after 28 June 1974, as referenced in Mitsubishi Service Bulletin No. 164. Compliance with this directive is crucial for ensuring that any potential issues are identified and rectified, thereby maintaining the overall integrity and safety of the aircraft in operation. The directive reflects the ongoing commitment of the Civil Aviation Safety Authority to uphold high safety standards and mitigate risks associated with civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, as amended, apply to all persons and entities involved in civil aviation operations within Australia. Specifically, the Mitsubishi MU-2 Series Aeroplanes Airworthiness Directive AD/MU-2/9 pertains to the inspection of trim aileron bellcrank bracket bolt holes for these aircraft. This directive applies to all Mitsubishi MU-2 series aeroplanes that fall under the jurisdiction of the Civil Aviation Safety Authority (CASA). The directive mandates compliance within 50 hours of time in service after 28 June 1974, as outlined in Mitsubishi Service Bulletin No. 164. The scope of the directive is geographically confined to Australia, given that CASA oversees civil aviation safety within the Commonwealth. There are no stated exclusions or exemptions within the directive, meaning that all applicable aircraft must comply with the specified inspection requirements to maintain airworthiness. The application of this directive can be extended or clarified through subordinate instruments issued by CASA, ensuring that the regulations remain effective and up-to-date with technological and safety advancements.

Key Provisions

The key operative sections of the Mitsubishi MU-2 Series Aeroplanes AD/MU-2/9 (part 39 - 105) mandate that inspections be conducted on the trim aileron bellcrank bracket bolt holes of the aeroplanes. This requirement is detailed in the Mitsubishi SB No. 164. The compliance timeframe specified is within 50 hours of time in service following 28 June 1974. These sections are crucial as they establish the necessity for regular and timely inspections to ensure the continued airworthiness of the aircraft in question. The obligations and requirements imposed by the Act are straightforward but pivotal for ensuring the safety of the Mitsubishi MU-2 Series Aeroplanes. Operators and owners of these aeroplanes must ensure that the specified inspections are carried out by qualified personnel in accordance with the detailed procedures outlined in Mitsubishi SB No. 164. This includes conducting a thorough examination of the trim aileron bellcrank bracket bolt holes to detect any signs of wear, damage, or structural integrity issues. Such inspections must be meticulously documented to demonstrate compliance with the regulatory requirements. Failure to adhere to the specified inspection requirements can lead to serious consequences. Under the Civil Aviation Regulations 1998, non-compliance with an Airworthiness Directive can result in significant penalties. These may include fines, enforcement actions, and potentially the grounding of the aeroplane until the required inspections are satisfactorily completed. The seriousness of these consequences underscores the importance of strict adherence to the mandated inspection protocols to maintain the safety and airworthiness of the aircraft.