AD/AC/5 - Landing Gear Selector Valve - Removal of AN 6207 Check Valve

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

Legislation au F2006B02109 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

 


Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes

 

AD/AC/5 Landing Gear Selector Valve - Removal NK

of AN 6207 Check Valve

Applicability: All models: S/Nos. 1 to 580. Document: Aero Commander SB No. 44. Compliance:  Forthwith.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, play a crucial role in regulating the safety standards within the aviation industry. One such regulation is found in Part 39 - 105, specifically focusing on Airworthiness Directives for certain aircraft models. This particular legislative instrument, F2006B02109, was introduced to address the safety concerns related to the landing gear selector valve in Twin Commander aeroplanes (Gulfstream/Rockwell/ Aerocommander 500, 600, and 700 series). The policy objective is to ensure that all relevant aircraft models comply with safety standards by mandating the removal of a specific component, the AN 6207 check valve, to mitigate potential safety risks. This legislative measure underscores the Australian government's commitment to maintaining high safety standards in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600, and 700) series aeroplanes, with serial numbers ranging from 1 to 580. This regulation mandates the immediate compliance with the Airworthiness Directive concerning the removal of the NK of AN 6207 check valve from the landing gear selector valve, as outlined in Aero Commander Service Bulletin No. 44. The directive is enforceable across the entire Commonwealth of Australia and is administered by the Civil Aviation Safety Authority. The regulation applies universally to all entities and individuals operating these specific aircraft models within the jurisdiction of the Commonwealth. The requirement for compliance is strict and must be met forthwith, without any stated exclusions or exemptions. The Civil Aviation Regulations may also extend or restrict the application of these directives through subordinate instruments as necessary.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, Part 39 - 105, focus on issuing Airworthiness Directives (ADs) concerning specific aircraft models and their components. This particular legislative instrument, AD/AC/5, addresses the landing gear selector valve issue for Twin Commander (Gulfstream/Rockwell/Aerocommander 500, 600 and 700) series aeroplanes. The directive mandates the removal of the AN 6207 check valve, as specified in Aero Commander Service Bulletin No. 44, and requires compliance immediately (Section 39-105(1)). The obligations and requirements imposed by this Act are straightforward. Aircraft owners, operators, and maintenance personnel must ensure that the specified models, serial numbers 1 to 580, have the AN 6207 check valve removed as per the instructions provided in Aero Commander Service Bulletin No. 44. This compliance is mandatory and must be achieved without delay to maintain the airworthiness of the aircraft. Failure to adhere to this directive could result in significant safety risks, leading to potential regulatory scrutiny and enforcement actions. The Act also outlines the consequences for non-compliance with these airworthiness directives. Any breach of the specified requirements could lead to severe penalties. Under the Civil Aviation Act 1988, failure to comply with an AD can result in substantial fines, with the maximum penalty for individuals being $165,000 and for corporations being $825,000. Additionally, there could be further civil or criminal consequences, including potential prosecution, which may lead to imprisonment. These stringent penalties are designed to ensure strict adherence to safety standards and to maintain the integrity of the aviation safety regulatory framework.

Legal classification tags

Area of Law
Administrative Law
Instrument
Regulation
Concepts
Regulatory Standards
Compliance Obligations
Prohibited Conduct
Catchwords
Airworthiness Directives

Interactions

Authorises

All Versions

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.