AD/BEECH 76/4 - Fuel Tank Outlet Check Valve and Fuel Selector Valves

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B04179 Not in force Legislative Instrument

Legislation content

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 76/4 Fuel Tank Outlet Check Valve and

Fuel Selector Valves

Applicability: All model 76 with S/Nos. ME-1 to ME-133. Requirement:  Action in accordance with Beechcraft SI No. 1054. Compliance:               Before 1 October 1979.


7/79

Background: The original fuel selector valves have proved unsatisfactory and are replaced with valves of an improved design, also, check valves are to be fitted at the fuel tank outlets to prevent inadvertent transfer of fuel between tanks.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, which were enacted by the Parliament of Australia, form a comprehensive set of rules governing civil aviation in Australia, and include various amendments and legislative instruments over the years. One such instrument, F2006B04179, pertains to the Beechcraft 76 (Duchess) series aeroplanes and was introduced to address issues related to the safety of the aircraft’s fuel system. The specific Airworthiness Directive AD/BEECH 76/4 aims to rectify problems associated with the original fuel selector valves and to enhance safety by requiring the installation of improved design valves and check valves at the fuel tank outlets. This was necessary to prevent the inadvertent transfer of fuel between tanks, a significant safety concern for the specified series of aircraft. The policy objective behind this directive is to ensure the airworthiness of the aircraft by mitigating risks associated with fuel system failures.

Scope and Application

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, outline the requirements for airworthiness directives pertinent to civil aviation in Australia, with a focus on ensuring the safety and compliance of aircraft. This particular legislative instrument, AD/BEECH 76/4, pertains to the Beechcraft 76 (Duchess) series aeroplanes with serial numbers ME-1 to ME-133. It mandates the replacement of original fuel selector valves with an improved design and the installation of check valves at the fuel tank outlets to prevent any inadvertent transfer of fuel between tanks. This directive applies to all specified aircraft models and requires compliance with Beechcraft Service Instruction No. 1054 before 1 October 1979. The regulation ensures that the modifications are implemented to enhance safety standards and mitigate potential risks associated with fuel tank operations. The application of this directive is strictly limited to the specified model and serial numbers of the Beechcraft 76 (Duchess) series aeroplanes. This regulation does not extend to other aircraft models or series, maintaining a focused scope on the identified safety concerns. Compliance with these directives is mandatory for the affected aircraft within the specified timeframe, ensuring that all necessary modifications are completed to meet the safety standards set forth by the Civil Aviation Safety Authority. The regulation does not explicitly mention any exclusions or exemptions, implying that all applicable aircraft must adhere to the outlined requirements.

Key Provisions

The main sections of this legislation, found within the Civil Aviation Regulations 1998, specifically address airworthiness directives for Beechcraft 76 (Duchess) series aeroplanes, as outlined in AD/BEECH 76/4. This directive pertains to all model 76 aeroplanes with serial numbers ranging from ME-1 to ME-133 (1). The directive requires that action be taken in accordance with Beechcraft Service Instruction No. 1054, which involves replacing the original fuel selector valves with improved designs and installing check valves at the fuel tank outlets to prevent inadvertent fuel transfer between tanks (2). Compliance with these requirements must be achieved before 1 October 1979 (3). This legislation imposes several obligations on the operators of the affected Beechcraft 76 series aeroplanes. Operators must ensure that the modifications and installations outlined in Beechcraft SI No. 1054 are carried out by appropriately qualified personnel and that all work is completed before the specified compliance date of 1 October 1979. This includes the replacement of existing fuel selector valves and the installation of check valves at the fuel tank outlets. Operators must also maintain records of compliance to demonstrate adherence to the directive, which may be subject to inspection by the Civil Aviation Safety Authority (CASA) (4). Failure to comply with the requirements of this airworthiness directive can result in significant legal consequences. The Civil Aviation Regulations 1998 provide for both civil and criminal penalties for non-compliance. Civil penalties may include fines, while criminal penalties may include imprisonment, reflecting the seriousness of ensuring the safety of air travel. The exact penalties are determined by the severity of the breach and are in accordance with the broader provisions of the Civil Aviation Act 1988 and associated regulations. The maximum penalties for such breaches can be severe, underscoring the importance of strict adherence to the directive (5).

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Area of Law
Aviation Law
Instrument
Regulation
Concepts
Definitions & Interpretation
Regulatory Standards
Compliance Obligations

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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.