AD/B-2/26 - Main Rotor Mast Upper Bearing - Replacement

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Legislation au F2006B02598 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

 


Brantly B-2 Series Helicopters

 

AD/B-2/26 Main Rotor Mast Upper Bearing - Replacement 7/67

Applicability: All model B-2, B-2A and B-2B with P/N B2-324 transmission with S/Nos. prior to 307.

 

Document: Brantly SB No. 21.

 

Compliance: Within 100 hours time in service after 15 August 1967.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, provide a comprehensive framework for ensuring the safety of civil aviation within Australian airspace. This legislation, administered by the Civil Aviation Safety Authority, aims to safeguard the public by setting stringent standards for aircraft airworthiness and operational procedures. One specific legislative instrument under this act is the Airworthiness Directive AD/B-2/26, which addresses a critical safety issue concerning the Brantly B-2 Series Helicopters. This directive, introduced to mitigate the risk associated with the main rotor mast upper bearing, requires the replacement of this component in certain models of the Brantly B-2 Series Helicopters to ensure continued airworthiness and safety within the aviation sector. The directive mandates compliance within 100 hours of time in service following its issuance date of 15 August 1967, as detailed in Brantly Service Bulletin No. 21.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 105, specifically address the airworthiness directives for the Brantly B-2 Series Helicopters, focusing on the replacement of the main rotor mast upper bearing. This regulation applies to all Brantly B-2, B-2A, and B-2B models equipped with a P/N B2-324 transmission and serial numbers prior to 307. Compliance with these directives is mandatory and must be achieved within 100 hours of time in service following the issuance date of 15 August 1967. The scope of this regulation is geographically national, applying across the Commonwealth of Australia and ensuring that all specified helicopters meet the safety standards set forth by the Civil Aviation Safety Authority. The regulation does not provide specific exclusions but mandates compliance for the identified aircraft within the stated timeframe and conditions. The enforcement and further clarification of these directives may be extended or supplemented by subordinate instruments, which may detail additional operational or procedural requirements.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 (1) concerning the Civil Aviation Safety Authority Schedule of Airworthiness Directives, contains critical provisions for the maintenance and safety of certain aircraft. One such directive is AD/B-2/26, which addresses the replacement of the main rotor mast upper bearing for Brantly B-2 series helicopters, models B-2, B-2A, and B-2B with P/N B2-324 transmission. This directive applies to helicopters with serial numbers (S/Nos.) prior to 307. Compliance with this directive is mandatory and must be achieved within 100 hours of time in service after 15 August 1967. The directive references Brantly Service Bulletin No. 21 as the document that outlines the specific procedures and requirements for replacing the bearing. The obligations imposed by this directive require that the helicopter owners and operators ensure the replacement of the main rotor mast upper bearing according to the specified timeframe and guidelines. This involves detailed technical work to ensure the replacement is done correctly, as per the instructions provided in Brantly Service Bulletin No. 21. The directive mandates that the replacement must be completed within the specified hours of service to ensure the continued airworthiness and safety of the aircraft. This obligation is essential to prevent potential failures that could compromise the safety of the flight. Failure to comply with the requirements set out in AD/B-2/26 could result in serious safety risks and potential legal consequences. The Civil Aviation Safety Authority (CASA) enforces these regulations rigorously, and non-compliance can lead to significant penalties. Under the Civil Aviation Act 1988, violations of airworthiness directives can result in both civil and criminal penalties. Civil penalties can include fines and other financial sanctions, while criminal penalties may involve imprisonment. The exact penalties are determined by the severity of the breach and are subject to the discretion of the court, with potential maximum penalties being substantial. Therefore, adherence to these directives is not just a regulatory requirement but a critical safety measure.

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Aviation Law
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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.