AD/BEECH 76/9 Amdt 1 - Engine Mount Assembly

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Legislation au F2006B04184 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Beechcraft 76 (Duchess) Series Aeroplanes

 

AD/BEECH 76/9

Amdt 1


Engine Mount Assembly 7/82

 

Applicability: All models 76 with S/Nos. ME 1 to ME-415. Requirement:  Action in accordance with Beechcraft SI No. 1147 R1. Compliance:               As per Requirement Document.

Background: Cracks may develop in the lower tubes of the engine mount assembly. Amdt. 1 is issued to extend aircraft serial number effectivity.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, specifically within Part 39, address various safety directives to ensure the airworthiness of aircraft operating in Australia. One such directive is AD/BEECH 76/9 Amendment 1, which pertains to the engine mount assembly of Beechcraft 76 (Duchess) Series Aeroplanes. This legislative instrument was enacted to address the potential issue of cracks developing in the lower tubes of the engine mount assembly, which could compromise the safety of the aircraft. The amendment extends the applicability to all models 76 with serial numbers ME 1 to ME-415. The policy objective, as outlined in the directive, is to mandate compliance with Beechcraft Service Information No. 1147 R1 to rectify and prevent such structural weaknesses. The directive is administered by the Civil Aviation Safety Authority (CASA) under the authority of the Australian Parliament, aiming to maintain the highest safety standards in civil aviation.

Scope and Application

The Civil Aviation Safety Authority (CASA) has issued a specific airworthiness directive under Part 39 of the Civil Aviation Regulations 1998, targeting the Beechcraft 76 (Duchess) series aeroplanes. This directive, AD/BEECH 76/9 Amendment 1, applies to all models 76 within the specified serial number range of ME 1 to ME-415. The directive mandates compliance with Beechcraft Service Information No. 1147 R1 to address potential cracks in the lower tubes of the engine mount assembly. Compliance must be achieved in accordance with the detailed requirements outlined in the directive. This regulation is specifically designed to ensure the ongoing airworthiness of affected aircraft, thereby enhancing safety standards within the aviation industry. The directive applies to the Commonwealth of Australia, ensuring a consistent approach to aviation safety across the nation.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), specifically Part 39 - 105, under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, address the maintenance and operational standards for the Beechcraft 76 (Duchess) Series Aeroplanes. One key provision in this legislation is AD/BEECH 76/9 Amendment 1, which focuses on the engine mount assembly (section 1). This airworthiness directive applies to all models of the 76 series with serial numbers ranging from ME 1 to ME-415 (section 2). Under the terms of the directive, operators are required to take specific actions concerning the engine mount assembly. The action mandated is in accordance with Beechcraft Service Information (SI) No. 1147 R1 (section 3). Compliance with the directive necessitates adherence to the requirements outlined in the relevant requirement document (section 4). The primary concern addressed by this directive is the potential for cracks to develop in the lower tubes of the engine mount assembly (section 5). The obligations imposed by this Act are stringent. Operators must ensure that the specified maintenance actions are carried out to prevent structural failure, which could lead to catastrophic outcomes. This involves a thorough inspection of the engine mount assembly and the implementation of any necessary repairs or replacements as per the specified service information (section 6). The directive also mandates that records of the compliance actions be maintained and made available for inspection by CASA officials (section 7). Failure to comply with the provisions of this airworthiness directive can result in severe consequences. Non-compliance may be considered a breach of the Civil Aviation Regulations, leading to potential enforcement actions by CASA (section 8). The penalties for breaching these regulations can include fines, suspension or revocation of airworthiness certificates, and potentially criminal charges for operators or responsible personnel, depending on the severity of the non-compliance (section 9). The maximum penalties for such breaches are significant, reflecting the critical importance of adhering to safety directives in aviation.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.